Complete classic literature • Five-line readings • Clear US narration
VELMORA ACADEMY
Academy of Archival Languages & Memory Studies
Menu Close
Boys' Second Book of Inventions
Boys' Second Book of Inventions

Chapter VII

Chapter 7 of Boys' Second Book of Inventions is here in full — 168 sentences across 34 reading sections, with audio for every sentence and word.

Cover illustration for Boys' Second Book of Inventions
Context Illustration Reading 1/33 · 5 lines
English subtitles · tap any word to listen 1 / 5
THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.
No, the great problems have not all been solved.
We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.
The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.
As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.
0:00 / 0:00
Speed 0.75x
AI-generated narration by OpenAI · Slow US English
LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
Editorial verification pending

A keeper or guardian of historical records and memories.

Boys' Second Book of Inventions

Chapter VII

Chapter 7 of Boys' Second Book of Inventions is here in full — 168 sentences across 34 reading sections, with audio for every sentence and word.

Reading 1/33 · 5 reading units · Lines 1–5

Line 1
THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.
Line 2
No, the great problems have not all been solved.
/noʊ ðə ɡreɪt ˈprɑːbləmz hæv nɑːt ɔːl bɪn sɑːlvd/
Line 3
We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.
Line 4
The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.
/ðə ˈfɜːrðər wiː ədˈvæns ɪn ˈsaɪəns ənd məˈkænɪks ðə ˈfɜːrðər wiː siː ˈɪntuː ðə ˈmɑːrvəlz ʌv ˈaʊər ˈwʌndərfəl ɜːrθ ənd ʌv ˈaʊər laɪf ənd ðə mɔːr ðer ɪz fɔːr ʌs tuː duː/
Line 5
As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.
/æz ˌpɑːpjəˈleɪʃən ɪnˈkriːsəz ənd ˈpiːpəl bɪˈkʌm mɔːr ˌɪnˈtelədʒənt ðer ɪz ə ˈkɑːnstənt dɪˈmænd fɔːr nuː θɪŋz nuː məˈʃiːnəri wɪtʃ wɪl eˈneɪbəl ðə ˈhjuːmən reɪs tuː muːv mɔːr ˈræpədli ənd kraʊd mɔːr wɜːrk ənd mɔːr ˈpleʒər ˈɪntuː ˈaʊər ʃɔːrt ˈhjuːmən laɪf/

Learner Dictionary

These definitions explain words found in the current reading and keep every example grounded in its original sentence.

Oxford-style entry order: headword, part of speech, US IPA, concise definition, contextual example, and audio.

increases noun US /ɪnˈkriːsəz/

plural of “increase” — a quantity that is added

From this reading “As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.”

inventions noun US /ˌɪnˈvenʃənz/

plural of “invention” — the creation of something in the mind

From this reading “THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.”

inventor noun US /ˌɪnˈventər/

someone who is the first to think of or make something

From this reading “THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.”

inventors noun US /ˌɪnˈventərz/

plural of “inventor” — someone who is the first to think of or make something

From this reading “We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.”

marvels noun US /ˈmɑːrvəlz/

plural of “marvel” — something that causes feelings of wonder

From this reading “The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.”

mechanics noun US /məˈkænɪks/

the branch of physics concerned with the motion of bodies in a frame of reference

From this reading “The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.”

Nitrogen noun US /ˈnaɪtrədʒən/

a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues

From this reading “THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.”

scientist noun US /ˈsaɪəntɪst/

a person with advanced knowledge of one or more sciences

From this reading “THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.”

Word partnerships in these lines

English keeps certain words together, and knowing the pair is worth more than knowing each word alone. Every partnership below was counted across our whole published library, and earns its place by appearing far more often than two unrelated words of the same frequency would.

Shown as this reading writes them, with the form the library counts, what kind of pairing it is, and how often it occurs.

electric motor adjective + noun

a motor that converts electricity to mechanical work

In this reading “We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.”

human race adjective + noun

all of the living human inhabitants of the earth

In this reading “As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.”

recent years adjective + noun

In this reading “THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.”

human life adjective + noun

In this reading “As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.”

constant demand adjective + noun

In this reading “As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.”

entirely new adverb + adjective

In this reading “We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.”

new machinery adjective + noun

In this reading “As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.”

become more verb + adjective

In this reading “As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.”

All words in this reading · 96

Every word in these five lines is listed here, and every one of them can be played on its own.

Dictionary details are shown only when verified; these are not licensed Oxford entries.

adeterminerUS /ə/

used before a singular noun to mean one of a group, when it is not a particular one

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

advanceverbUS /ədˈvæns/

move forward, also in the metaphorical sense

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

air-shipverb

transport (cargo) by air

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

alladjectiveUS /ɔːl/

(quantifier) used with either mass or count nouns to indicate the whole number or amount of or every one of a class

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

ambitiousadjectiveUS /æmˈbɪʃəs/

having a strong desire for success or achievement

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

ANDconjunctionUS /ənd/

used to join words or parts of a sentence that go together

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

AsconjunctionUS /æz/

at the same time that; because; in the way that

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

attentionnounUS /əˈtenʃən/

the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

becomeverbUS /bɪˈkʌm/

enter or assume a certain state or condition

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

beenauxiliary verbUS /bɪn/

the past participle of “be”

From this reading No, the great problems have not all been solved.

bringverbUS /brɪŋ/

take something or somebody with oneself somewhere

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

butconjunctionUS /bʌt/

used to introduce something that contrasts with what came before

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

constantadjectiveUS /ˈkɑːnstənt/

unvarying in nature

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

crowdverbUS /kraʊd/

cause to herd, drive, or crowd together

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

demandnounUS /dɪˈmænd/

an urgent or peremptory request

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

discoveriesnounUS /dɪˈskʌvəriz/

plural of “discovery” — the act of discovering something

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

doauxiliary verbUS /duː/

used to form questions and negatives, and to give emphasis

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

doesauxiliary verbUS /dʌz/

the form of “do” used with he, she, it, or a singular noun

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

earthnounUS /ɜːrθ/

the 3rd planet from the sun; the planet we live on

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

electricadjectiveUS /ɪˈlektrɪk/

using or providing or producing or transmitting or operated by electricity

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

enableverbUS /eˈneɪbəl/

render capable or able for some task

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

entirelyadverbUS /ɪnˈtaɪərli/

to a complete degree or to the full or entire extent (“whole” is often used informally for “wholly”)

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

ExperimentsnounUS /ɪkˈsperəmənts/

plural of “experiment” — the act of conducting a controlled test or investigation

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

fearverbUS /fɪr/

be afraid or feel anxious or apprehensive about a possible or probable situation or event

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

FixingnounUS /ˈfɪksɪŋ/

the act of putting something in working order again

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

FOODnounUS /fuːd/

any substance that can be metabolized by an animal to give energy and build tissue

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

forprepositionUS /fɔːr/

intended to be given to, or used by, somebody

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

furtheradverbUS /ˈfɜːrðər/

to or at a greater extent or degree or a more advanced stage (“further” is used more often than “farther” in this abstract sense)

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

futureadjectiveUS /ˈfjuːtʃər/

yet to be or coming

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

greatadjectiveUS /ɡreɪt/

relatively large in size or number or extent; larger than others of its kind

From this reading No, the great problems have not all been solved.

haveauxiliary verbUS /hæv/

used with a past participle to form the perfect tenses

From this reading No, the great problems have not all been solved.

humanadjectiveUS /ˈhjuːmən/

characteristic of humanity

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

inprepositionUS /ɪn/

inside something, or within a place, period, or state

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

increasesnounUS /ɪnˈkriːsəz/

plural of “increase” — a quantity that is added

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

intelligentadjectiveUS /ˌɪnˈtelədʒənt/

having the capacity for thought and reason especially to a high degree

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

intoprepositionUS /ˈɪntuː/

moving to the inside of something

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

inventionsnounUS /ˌɪnˈvenʃənz/

plural of “invention” — the creation of something in the mind

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

INVENTORnounUS /ˌɪnˈventər/

someone who is the first to think of or make something

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

inventorsnounUS /ˌɪnˈventərz/

plural of “inventor” — someone who is the first to think of or make something

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

isauxiliary verbUS /ɪz/

the form of “be” used with he, she, it, or a singular noun

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

ladnounUS /læd/

a boy or man

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

lifenounUS /laɪf/

a characteristic state or mode of living

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

machinerynounUS /məˈʃiːnəri/

machines or machine systems collectively

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

marvelsnounUS /ˈmɑːrvəlz/

plural of “marvel” — something that causes feelings of wonder

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

mechanicsnounUS /məˈkænɪks/

the branch of physics concerned with the motion of bodies in a frame of reference

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

moreadjectiveUS /mɔːr/

(comparative of “much” used with mass nouns) a quantifier meaning greater in size or amount or extent or degree

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

motornounUS /ˈmoʊtər/

machine that converts other forms of energy into mechanical energy and so imparts motion

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

moveverbUS /muːv/

change location; move, travel, or proceed, also metaphorically

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

neednounUS /niːd/

a condition requiring relief

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

newadjectiveUS /nuː/

not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

NitrogennounUS /ˈnaɪtrədʒən/

a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

NodeterminerUS /noʊ/

not any; not one

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

Nobbe

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

notadverbUS /nɑːt/

used to make a word, phrase, or sentence negative

From this reading No, the great problems have not all been solved.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

onepronounUS /wʌn/

used to mean any person in general, including the speaker

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

orconjunctionUS /ɔːr/

used to join alternatives or possibilities

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

ourdeterminerUS /ˈaʊər/

belonging to the speaker and others

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

peoplenounUS /ˈpiːpəl/

(plural) any group of human beings (men or women or children) collectively

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

perfectadjectiveUS /pərˈfekt/

being complete of its kind and without defect or blemish

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

pleasurenounUS /ˈpleʒər/

a fundamental feeling that is hard to define but that people desire to experience

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

plentynounUS /ˈplenti/

a full supply

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

populationnounUS /ˌpɑːpjəˈleɪʃən/

the people who inhabit a territory or state

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

PROBLEMnounUS /ˈprɑːbləm/

a state of difficulty that needs to be resolved

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

problemsnounUS /ˈprɑːbləmz/

plural of “problem” — a state of difficulty that needs to be resolved

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

ProfessornounUS /prəˈfesər/

someone who is a member of the faculty at a college or university

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

racenounUS /reɪs/

any competition

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

rapidlyadverbUS /ˈræpədli/

with speed

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

readingnounUS /ˈriːdɪŋ/

the cognitive process of understanding a written linguistic message

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

recentadjectiveUS /ˈriːsənt/

new

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

revolutionising

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

sciencenounUS /ˈsaɪəns/

a particular branch of scientific knowledge

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

scientistnounUS /ˈsaɪəntɪst/

a person with advanced knowledge of one or more sciences

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

scoresnounUS /skɔːrz/

a large number or amount

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

seeverbUS /siː/

perceive by sight or have the power to perceive by sight

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

shortadjectiveUS /ʃɔːrt/

primarily temporal sense; indicating or being or seeming to be limited in duration

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

solutionnounUS /səˈluːʃən/

a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

solveverbUS /sɑːlv/

find the solution to (a problem or question) or understand the meaning of

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

solvedadjectiveUS /sɑːlvd/

explained or answered

From this reading No, the great problems have not all been solved.

steam-engine

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

telegraphnounUS /ˈteləɡræf/

apparatus used to communicate at a distance over a wire (usually in Morse code)

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

telephonenounUS /ˈteləfoʊn/

electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

thatconjunctionUS /ðæt/

used to introduce what somebody said, thought, or felt

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

THEdeterminerUS /ðə/

used before a noun that is already known, already mentioned, or the only one of its kind

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

thempronounUS /ðem/

the people or things already mentioned, as the object

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

thereadverbUS /ðer/

in or at that place or location

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

thingsnounUS /θɪŋz/

any movable possession (especially articles of clothing)

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

toparticleUS /tuː/

used before the base form of a verb to make the infinitive

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

to-day

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

uspronounUS /ʌs/

the speaker and others, as the object of a verb or preposition

From this reading The further we advance in science and mechanics the further we see into the marvels of our wonderful earth and of our life, and the more there is for us to do.

WepronounUS /wiː/

the speaker together with one or more other people

From this reading We have the steam-engine, the electric motor, the telegraph, the telephone, the air-ship, but not one of them is perfect, not one that does not bring to the attention of inventors scores of entirely new problems for solution.

whichpronounUS /wɪtʃ/

used to introduce a clause giving more about a thing just mentioned

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

willmodal verbUS /wɪl/

used to talk about the future, or about willingness

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

wonderfuladjectiveUS /ˈwʌndərfəl/

extraordinarily good or great; used especially as intensifiers

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

workverbUS /wɜːrk/

exert oneself by doing mental or physical work for a purpose or out of necessity

From this reading As population increases and people become more intelligent there is a constant demand for new things, new machinery which will enable the human race to move more rapidly and crowd more work and more pleasure into our short human life.

yearsnounUS /jɪrz/

a late time of life

From this reading THE INVENTOR AND THE FOOD PROBLEM _Fixing of Nitrogen--Experiments of Professor Nobbe_ No lad of to-day, ambitious to become a scientist or inventor, reading of all the wonderful and revolutionising discoveries and inventions of recent years, need fear for plenty of new problems to solve in the future.

Chapter 7 of Boys' Second Book of Inventions by Ray Stannard Baker holds 168 sentences, grouped into 34 reading sections of at most 5 sentences. The text is the source edition, unabridged, and the chapter records which sentences cover which part of the work so that nothing is dropped. Every word can be tapped for its pronunciation and dictionary entry.

What does chapter 7 of Boys' Second Book of Inventions contain?

Chapter 7 holds 168 sentences of Boys' Second Book of Inventions, unabridged, divided into 34 reading sections.

This page carries chapter 7 of Boys' Second Book of Inventions by Ray Stannard Baker exactly as it stands in the source edition, without abridgement. It runs to 168 sentences, grouped into 34 sections of at most 5 sentences so that a reader can take the chapter in steady, finishable pieces. The chapter also stores a coverage record mapping every one of its sentences to a part of the work, which is how the edition demonstrates that no line was dropped.

How do I study chapter 7 of Boys' Second Book of Inventions?

Work through the 34 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 34 sections in this chapter is short enough to read once, hear once, and then re-read with the vocabulary in view. Tapping a word plays it alone and opens its dictionary entry with IPA, part of speech and meaning, so the reader is never forced to guess a pronunciation from spelling. Working section by section keeps a long chapter from becoming an undifferentiated wall of text, which is the usual reason a reader abandons a work of this period.

Can chapter 7 be read aloud to me?

Yes — every sentence and every individual word in chapter 7 can be played aloud in United States English.

Audio covers the whole chapter: any sentence can be played, and any single word within it can be played on its own. The voice uses United States English. For a work of this period that matters, because spelling is an unreliable guide to pronunciation for vocabulary that has fallen out of daily use, and a learner who guesses wrong tends to keep the error. Hearing the word in its own sentence, and then alone, settles it.

Questions about reading Boys' Second Book of Inventions

Common questions about reading Boys' Second Book of Inventions by Ray Stannard Baker on this page, its source edition and its audio.

Is this the complete text of Boys' Second Book of Inventions?

Yes. All 1563 sentences of Project Gutenberg eBook #44188 are kept, with a record of which sentences cover which part.

Which edition of Boys' Second Book of Inventions is used?

Project Gutenberg eBook #44188, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does Boys' Second Book of Inventions take to read?

About 130 minutes of reading across 313 sections of 5 sentences each, at an unhurried pace.

How to read Boys' Second Book of Inventions section by section

How to work through Boys' Second Book of Inventions section by section, using the audio and the tap-to-define vocabulary.

  1. Open a chapter

    Choose one of the 10 chapters of Boys' Second Book of Inventions to begin.

  2. Read one section

    Each section holds 5 sentences; read it once through.

  3. Listen and tap

    Play the section aloud, then tap any unfamiliar word for its entry.

Vocabulary met early in Boys' Second Book of Inventions

Words and structures a reader meets early in Boys' Second Book of Inventions, each tappable for pronunciation and meaning.

Small
A word that appears in the opening chapter of Boys' Second Book of Inventions; the reader can tap it to hear it and see its dictionary entry.
Capitals
A word that appears in the opening chapter of Boys' Second Book of Inventions; the reader can tap it to hear it and see its dictionary entry.
Transcribed
A word that appears in the opening chapter of Boys' Second Book of Inventions; the reader can tap it to hear it and see its dictionary entry.
Author
A word that appears in the opening chapter of Boys' Second Book of Inventions; the reader can tap it to hear it and see its dictionary entry.