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The Boy's Playbook of Science
The Boy's Playbook of Science

Chapter XXXI · Experiment one is not indicated by a title heading

Chapter XXXI of The Boy's Playbook of Science, “Experiment one is not indicated by a title heading,” is here in full — 7 sentences across 2 reading sections, with audio for every sentence and word.

Cover illustration for The Boy's Playbook of Science
Context Illustration Reading 1/1 · 7 lines
English subtitles · tap any word to listen 1 / 7
Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.
It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."
Fig. 123. is irrelevant to this section.
The reference has been deleted.
Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.
(Fig. 401.)" Ref. to (Fig. 401.) removed.
Fig. 401. not in original hard copy version.
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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's Playbook of Science

Chapter XXXI · Experiment one is not indicated by a title heading

Chapter XXXI of The Boy's Playbook of Science, “Experiment one is not indicated by a title heading,” is here in full — 7 sentences across 2 reading sections, with audio for every sentence and word.

Reading 1/1 · 7 reading units · Lines 1–7

Line 1
Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.
Line 2
It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."
Line 3
Fig. 123. is irrelevant to this section.
Line 4
The reference has been deleted.
/ðə ˈrefərəns hæz bɪn dɪˈliːtəd/
Line 5
Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.
Line 6
(Fig. 401.)" Ref. to (Fig. 401.) removed.
Line 7
Fig. 401. not in original hard copy version.

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.

chloroform noun US /ˈklɔːrəfɔːrm/

a volatile liquid haloform (CHCl3); formerly used as an anesthetic

From this reading “Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.”

coated adjective US /ˈkoʊtəd/

having a coating; covered with an outer layer or film; often used in combination

From this reading “Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.”

deleted verb US /dɪˈliːtəd/

past form of “delete” — remove or make invisible

From this reading “The reference has been deleted.”

Differential noun US /ˌdɪfərˈenʃəl/

the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx

From this reading “Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.”

irrelevant adjective US /ˌɪˈreləvənt/

having no bearing on or connection with the subject at issue

From this reading “Fig. 123. is irrelevant to this section.”

Ref noun US /ref/

(sports) the chief official (as in boxing or American football) who is expected to ensure fair play

From this reading “(Fig. 401.)" Ref. to (Fig. 401.) removed.”

spontaneously adverb US /spɑːnˈteɪniəsli/

in a spontaneous manner

From this reading “Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.”

varnish noun US /ˈvɑːrnɪʃ/

a coating that provides a hard, lustrous, transparent finish to a surface

From this reading “Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.”

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.

per minute preposition + noun

In this reading “Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.”

per second preposition + noun

In this reading “Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.”

hardly necessary adverb + adjective

In this reading “It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."”

dark room noun + noun

In this reading “It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."”

in a dark preposition + article + noun counted as “in … dark”

In this reading “It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."”

name of verb + particle

In this reading “Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.”

All words in this reading · 82

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.

123

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

From this reading Fig. 123. is irrelevant to this section.

148

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

365

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

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

401

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

From this reading (Fig. 401.)" Ref. to (Fig. 401.) removed.

99

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

adeterminerUS /ə/

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

addverbUS /æd/

make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

airnounUS /er/

a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

allowedverbUS /əˈlaʊd/

past form of “allow” — make it possible through a specific action or lack of action for something to happen

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

ambernounUS /ˈæmbər/

a deep yellow color

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

andeterminerUS /æn/

the form of “a” used before a word that begins with a vowel sound

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

andconjunctionUS /ənd/

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

beauxiliary verbUS /biː/

used with a past participle to form the passive, or with -ing for continuous tenses

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

beatsnounUS /biːts/

a United States youth subculture of the 1950s; rejected possessions or regular work or traditional dress; for communal living and psychedelic drugs and anarchism; favored modern forms of jazz (e.g., bebop)

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

beenauxiliary verbUS /bɪn/

the past participle of “be”

From this reading The reference has been deleted.

beingauxiliary verbUS /ˈbiːɪŋ/

the -ing form of “be”

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

byprepositionUS /baɪ/

showing who or what does the action

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

changedadjectiveUS /tʃeɪndʒd/

made or become different in nature or form

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

chloroformnounUS /ˈklɔːrəfɔːrm/

a volatile liquid haloform (CHCl3); formerly used as an anesthetic

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

coatedadjectiveUS /ˈkoʊtəd/

having a coating; covered with an outer layer or film; often used in combination

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

copynounUS /ˈkɑːpi/

a reproduction of a written record (e.g. of a legal or school record)

From this reading Fig. 401. not in original hard copy version.

darknounUS /dɑːrk/

absence of light or illumination

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

deletedverbUS /dɪˈliːtəd/

past form of “delete” — remove or make invisible

From this reading The reference has been deleted.

delicateadjectiveUS /ˈdeləkət/

exquisitely fine and subtle and pleasing; susceptible to injury

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

developingadjectiveUS /dɪˈveləpɪŋ/

relating to societies in which capital needed to industrialize is in short supply

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

DifferentialnounUS /ˌdɪfərˈenʃəl/

the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

dryadjectiveUS /draɪ/

free from liquid or moisture; lacking natural or normal moisture or depleted of water; or no longer wet

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

employedadjectiveUS /emˈplɔɪd/

having your services engaged for; or having a job especially one that pays wages or a salary

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

experimentsnounUS /ɪkˈsperəmənts/

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

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

fiftynounUS /ˈfɪfti/

the cardinal number that is the product of ten and five

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

FignounUS /fɪɡ/

a diagram or picture illustrating textual material

From this reading Fig. 123. is irrelevant to this section.

fortyadjectiveUS /ˈfɔːrti/

being ten more than thirty

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

fromprepositionUS /frʌm/

showing where something starts, or who sent it

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

hardadjectiveUS /hɑːrd/

not easy; requiring great physical or mental effort to accomplish or comprehend or endure

From this reading Fig. 401. not in original hard copy version.

hardlyadverbUS /ˈhɑːrdli/

only a very short time before

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

hasauxiliary verbUS /hæz/

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

From this reading The reference has been deleted.

heatnounUS /hiːt/

a form of energy that is transferred by a difference in temperature

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

hisdeterminerUS /hɪz/

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

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

inprepositionUS /ɪn/

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

irrelevantadjectiveUS /ˌɪˈreləvənt/

having no bearing on or connection with the subject at issue

From this reading Fig. 123. is irrelevant to this section.

isauxiliary verbUS /ɪz/

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

JohnnounUS /dʒɑːn/

a room or building equipped with one or more toilets

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

Leslie

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

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

minutenounUS /ˈmɪnət/

a unit of time equal to 60 seconds or 1/60th of an hour

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

mustmodal verbUS /mʌst/

used to say something is necessary, or almost certainly true

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

nameverbUS /neɪm/

assign a specified (usually proper) proper name to

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

necessaryadjectiveUS /ˈnesəseri/

absolutely essential

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

notadverbUS /nɑːt/

used to make a word, phrase, or sentence negative

From this reading Fig. 401. not in original hard copy version.

nowadverbUS /naʊ/

in the historical present; at this point in the narration of a series of past events

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

orconjunctionUS /ɔːr/

used to join alternatives or possibilities

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

originaladjectiveUS /ərˈɪdʒənəl/

preceding all others in time or being as first made or performed

From this reading Fig. 401. not in original hard copy version.

PagenounUS /peɪdʒ/

one side of one leaf (of a book or magazine or newspaper or letter etc.) or the written or pictorial matter it contains

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

perprepositionUS /pɜːr/

for each

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

performedverbUS /pərˈfɔːrmd/

past form of “perform” — carry out or perform an action

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

perhapsadverbUS /pərˈhæps/

by chance

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

printnounUS /prɪnt/

the text appearing in a book, newspaper, or other printed publication

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

processesnounUS /ˈprɑːsesəz/

plural of “process” — a particular course of action intended to achieve a result

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

pulsenounUS /pʌls/

(electronics) a sharp transient wave in the normal electrical state (or a series of such transients)

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

raisedadjectiveUS /reɪzd/

located or moved above the surround or above the normal position

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

readyadjectiveUS /ˈredi/

completely prepared or in condition for immediate action or use or progress

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

RefnounUS /ref/

(sports) the chief official (as in boxing or American football) who is expected to ensure fair play

From this reading (Fig. 401.)" Ref. to (Fig. 401.) removed.

referencenounUS /ˈrefərəns/

a remark that calls attention to something or someone

From this reading The reference has been deleted.

refinedadjectiveUS /rəˈfaɪnd/

(used of persons and their behavior) cultivated and genteel

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

removedadjectiveUS /riˈmuːvd/

separated in relationship by a given degree of descent

From this reading (Fig. 401.)" Ref. to (Fig. 401.) removed.

roomnounUS /ruːm/

an area within a building enclosed by walls and floor and ceiling

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

secondnounUS /ˈsekənd/

1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

sectionnounUS /ˈsekʃən/

a self-contained part of a larger composition (written or musical)

From this reading Fig. 123. is irrelevant to this section.

sensitizingnoun

rendering an organism sensitive to a serum by a series of injections

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

SirnounUS /sɜːr/

term of address for a man

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

solutionnounUS /səˈluːʃən/

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

spontaneouslyadverbUS /spɑːnˈteɪniəsli/

in a spontaneous manner

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

thatconjunctionUS /ðæt/

used to introduce what somebody said, thought, or felt

From this reading It is, perhaps, hardly necessary to add, that the sensitizing and developing processes must be performed in a dark room."

thedeterminerUS /ðə/

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

thermometernounUS /θərˈmɑːmətər/

measuring instrument for measuring temperature

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

thisdeterminerUS /ðɪs/

used for a person or thing that is near, or that has just been mentioned

From this reading Fig. 123. is irrelevant to this section.

toparticleUS /tuː/

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

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

underprepositionUS /ˈʌndər/

below or beneath something; less than

From this reading Page 365. "an air thermometer has been employed by Sir John Leslie, under the name of the "Differential Thermometer," in his refined and delicate experiments with heat.

varnishnounUS /ˈvɑːrnɪʃ/

a coating that provides a hard, lustrous, transparent finish to a surface

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

versionnounUS /ˈvɜːrʒən/

an interpretation of a matter from a particular viewpoint

From this reading Fig. 401. not in original hard copy version.

withprepositionUS /wɪð/

in the company of; together with

From this reading Page 99. "the pulse is raised forty or fifty beats per second" changed to "the pulse is raised forty or fifty beats per minute" Page 148. "it is allowed to dry spontaneously, and being coated with amber varnish (a solution of amber in chloroform) is now ready to print from.

Chapter 31 of The Boy's Playbook of Science by John Henry Pepper holds 7 sentences, grouped into 2 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 31 of The Boy's Playbook of Science contain?

Chapter 31 holds 7 sentences of The Boy's Playbook of Science, unabridged, divided into 2 reading sections.

This page carries chapter 31 of The Boy's Playbook of Science by John Henry Pepper exactly as it stands in the source edition, without abridgement. It runs to 7 sentences, grouped into 2 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 31 of The Boy's Playbook of Science?

Work through the 2 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 2 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 31 be read aloud to me?

Yes — every sentence and every individual word in chapter 31 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's Playbook of Science

Common questions about reading The Boy's Playbook of Science by John Henry Pepper on this page, its source edition and its audio.

Is this the complete text of The Boy's Playbook of Science?

Yes. All 4206 sentences of Project Gutenberg eBook #41839 are kept, with a record of which sentences cover which part.

Which edition of The Boy's Playbook of Science is used?

Project Gutenberg eBook #41839, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does The Boy's Playbook of Science take to read?

About 350 minutes of reading across 842 sections of 5 sentences each, at an unhurried pace.

How to read The Boy's Playbook of Science section by section

How to work through The Boy's Playbook of Science section by section, using the audio and the tap-to-define vocabulary.

  1. Open a chapter

    Choose one of the 31 chapters of The Boy's Playbook of Science 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 The Boy's Playbook of Science

Words and structures a reader meets early in The Boy's Playbook of Science, each tappable for pronunciation and meaning.

Chemical
A word that appears in the opening chapter of The Boy's Playbook of Science; the reader can tap it to hear it and see its dictionary entry.
Philosophical
A word that appears in the opening chapter of The Boy's Playbook of Science; the reader can tap it to hear it and see its dictionary entry.
Apparatus
A word that appears in the opening chapter of The Boy's Playbook of Science; the reader can tap it to hear it and see its dictionary entry.
Required
A word that appears in the opening chapter of The Boy's Playbook of Science; the reader can tap it to hear it and see its dictionary entry.