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The Boy Inventors' Radio Telephone
The Boy Inventors' Radio Telephone

Chapter XV · Chapter 15

Chapter 15 of The Boy Inventors' Radio Telephone is here in full — 51 sentences across 11 reading sections, with audio for every sentence and word.

Cover illustration for The Boy Inventors' Radio Telephone
Context Illustration Reading 1/10 · 5 lines
English subtitles · tap any word to listen 1 / 5
ZEB CUMMINGS.
"Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.
"I suppose that approximately describes it," said the professor, "but what do you know about it?"
Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.
"Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.
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AI-generated narration by OpenAI · Slow US English
LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
Editorial verification pending

A keeper or guardian of historical records and memories.

The Boy Inventors' Radio Telephone

Chapter XV · Chapter 15

Chapter 15 of The Boy Inventors' Radio Telephone is here in full — 51 sentences across 11 reading sections, with audio for every sentence and word.

Reading 1/10 · 5 reading units · Lines 1–5

Line 1
ZEB CUMMINGS.
Line 2
"Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.
Line 3
"I suppose that approximately describes it," said the professor, "but what do you know about it?"
/aɪ səˈpoʊz ðæt əˈprɑːksəmətli dɪˈskraɪbz ɪt sed ðə prəˈfesər bʌt wʌt duː juː noʊ əˈbaʊt ɪt/
Line 4
Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.
Line 5
"Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.
/wel ɪf wʌt ˈsæntʃez sed wɑːz truː ənd ðə mæp ɪz raɪt ðer ɪz ˈplenti ʌv ɪt raɪt ɑːn ðæt ˈaɪlənd sed ðə ˈmaɪnər/

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.

approximately adverb US /əˈprɑːksəmətli/

(of quantities) imprecise but fairly close to correct

From this reading “"I suppose that approximately describes it," said the professor, "but what do you know about it?"”

ardently adverb US /ˈɑːrdəntli/

in an ardent manner

From this reading “Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.”

cummings noun US /ˈkʌmɪŋz/

United States writer noted for his typographically eccentric poetry (1894-1962)

From this reading “ZEB CUMMINGS.”

efficient adjective US /ɪˈfɪʃənt/

being effective without wasting time or effort or expense

From this reading “Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.”

miner noun US /ˈmaɪnər/

laborer who works in a mine

From this reading “"Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.”

radio noun US /ˈreɪdioʊ/

medium for communication

From this reading “"Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.”

Sanchez noun US /ˈsæntʃez/

Venezuelan master terrorist raised by a Marxist-Leninist father; trained and worked with many terrorist groups (born in 1949)

From this reading “"Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.”

telephony noun US /ˈteləfoʊni/

transmitting speech at a distance

From this reading “Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.”

All words in this reading · 59

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.

2

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

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

aboutprepositionUS /əˈbaʊt/

on the subject of; concerning

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

andconjunctionUS /ənd/

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

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

approximatelyadverbUS /əˈprɑːksəmətli/

(of quantities) imprecise but fairly close to correct

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

ardentlyadverbUS /ˈɑːrdəntli/

in an ardent manner

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

butconjunctionUS /bʌt/

used to introduce something that contrasts with what came before

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

CUMMINGSnounUS /ˈkʌmɪŋz/

United States writer noted for his typographically eccentric poetry (1894-1962)

From this reading ZEB CUMMINGS.

describesverbUS /dɪˈskraɪbz/

third-person singular of “describe” — give a description of

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

doauxiliary verbUS /duː/

used to form questions and negatives, and to give emphasis

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

efficientadjectiveUS /ɪˈfɪʃənt/

being effective without wasting time or effort or expense

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

elementnounUS /ˈeləmənt/

an abstract part of something

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

exclaimedverbUS /ɪkˈskleɪmd/

past form of “exclaim” — utter aloud; often with surprise, horror, or joy

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

explainedverbUS /ɪkˈspleɪnd/

past form of “explain” — make plain and comprehensible

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

fathernounUS /ˈfɑːðər/

a male parent (also used as a term of address to your father)

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

forprepositionUS /fɔːr/

intended to be given to, or used by, somebody

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

hadauxiliary verbUS /hæd/

the past form of “have”, used to form the past perfect

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

hisdeterminerUS /hɪz/

belonging to a man, boy, or male animal already mentioned

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

how

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

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

IpronounUS /aɪ/

the person speaking or writing, as the subject of the verb

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

ifconjunctionUS /ɪf/

on condition that; in the event that

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

inprepositionUS /ɪn/

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

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

isauxiliary verbUS /ɪz/

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

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

islandnounUS /ˈaɪlənd/

a land mass (smaller than a continent) that is surrounded by water

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

JacknounUS /dʒæk/

a small worthless amount

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

knowverbUS /noʊ/

be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

makeverbUS /meɪk/

engage in

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

mapverbUS /mæp/

make a map of; show or establish the features of details of

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

minernounUS /ˈmaɪnər/

laborer who works in a mine

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

missingadjectiveUS /ˈmɪsɪŋ/

not able to be found

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

mostadverbUS /moʊst/

used to form the superlative

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

onprepositionUS /ɑːn/

touching and supported by a surface

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

plentynounUS /ˈplenti/

a full supply

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

professornounUS /prəˈfesər/

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

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

radionounUS /ˈreɪdioʊ/

medium for communication

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

radio-active

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

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

rightadverbUS /raɪt/

precisely, exactly

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

saidadjectiveUS /sed/

being the one previously mentioned or spoken of

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

SancheznounUS /ˈsæntʃez/

Venezuelan master terrorist raised by a Marxist-Leninist father; trained and worked with many terrorist groups (born in 1949)

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

stuffnounUS /stʌf/

the tangible substance that goes into the makeup of a physical object

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

supposeverbUS /səˈpoʊz/

express a supposition

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

systemnounUS /ˈsɪstəm/

instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

telephonynounUS /ˈteləfoʊni/

transmitting speech at a distance

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

thatconjunctionUS /ðæt/

used to introduce what somebody said, thought, or felt

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

thedeterminerUS /ðə/

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

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

thereadverbUS /ðer/

in or at that place or location

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

toparticleUS /tuː/

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

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

trueadjectiveUS /truː/

consistent with fact or reality; not false

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

usenounUS /juːs/

the act of using

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

wasauxiliary verbUS /wɑːz/

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

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

WelladverbUS /wel/

(often used as a combining form) in a good or proper or satisfactory manner or to a high standard (“good” is a nonstandard dialectal variant for “well”)

From this reading "Well, if what Sanchez said was true, and the map is right, there is plenty of it right on that island," said the miner.

whatpronounUS /wʌt/

used to ask for information about something

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

wishedverbUS /wɪʃt/

past form of “wish” — hope for; have a wish

From this reading Jack explained how ardently his father had wished for the missing element to make his system of radio telephony the most efficient in use.

worldnounUS /wɜːrld/

everything that exists anywhere

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

XnounUS /eks/

the cardinal number that is the sum of nine and one; the base of the decimal system

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

youpronounUS /juː/

the person or people being spoken to

From this reading "I suppose that approximately describes it," said the professor, "but what do you know about it?"

ZnounUS /ziː/

the ending of a series or sequence

From this reading "Z.2.X., the most radio-active stuff in the world!" exclaimed Jack.

ZEB

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

From this reading ZEB CUMMINGS.

Chapter 15 of The Boy Inventors' Radio Telephone by Richard Bonner holds 51 sentences, grouped into 11 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 15 of The Boy Inventors' Radio Telephone contain?

Chapter 15 holds 51 sentences of The Boy Inventors' Radio Telephone, unabridged, divided into 11 reading sections.

This page carries chapter 15 of The Boy Inventors' Radio Telephone by Richard Bonner exactly as it stands in the source edition, without abridgement. It runs to 51 sentences, grouped into 11 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 15 of The Boy Inventors' Radio Telephone?

Work through the 11 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 11 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 15 be read aloud to me?

Yes — every sentence and every individual word in chapter 15 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 The Boy Inventors' Radio Telephone

Common questions about reading The Boy Inventors' Radio Telephone by Richard Bonner on this page, its source edition and its audio.

Is this the complete text of The Boy Inventors' Radio Telephone?

Yes. All 2971 sentences of Project Gutenberg eBook #13783 are kept, with a record of which sentences cover which part.

Which edition of The Boy Inventors' Radio Telephone is used?

Project Gutenberg eBook #13783, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does The Boy Inventors' Radio Telephone take to read?

About 247 minutes of reading across 595 sections of 5 sentences each, at an unhurried pace.

How to read The Boy Inventors' Radio Telephone section by section

How to work through The Boy Inventors' Radio Telephone section by section, using the audio and the tap-to-define vocabulary.

  1. Open a chapter

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  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 The Boy Inventors' Radio Telephone

Words and structures a reader meets early in The Boy Inventors' Radio Telephone, each tappable for pronunciation and meaning.

Encounter
A word that appears in the opening chapter of The Boy Inventors' Radio Telephone; the reader can tap it to hear it and see its dictionary entry.
Character
A word that appears in the opening chapter of The Boy Inventors' Radio Telephone; the reader can tap it to hear it and see its dictionary entry.
Jammed
A word that appears in the opening chapter of The Boy Inventors' Radio Telephone; the reader can tap it to hear it and see its dictionary entry.
Emergency
A word that appears in the opening chapter of The Boy Inventors' Radio Telephone; the reader can tap it to hear it and see its dictionary entry.