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An Introduction to Nature-Study
An Introduction to Nature-Study

Chapter XXI

Chapter 21 of An Introduction to Nature-Study is here in full — 248 sentences across 50 reading sections, with audio for every sentence and word.

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Context Illustration Reading 1/49 · 5 lines
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SOME CRUSTACEANS, MOLLUSCS, AND WORMS.
65.
SOME COMMON CRUSTACEANS.
1.
=The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.
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LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
Editorial verification pending

A keeper or guardian of historical records and memories.

An Introduction to Nature-Study

Chapter XXI

Chapter 21 of An Introduction to Nature-Study is here in full — 248 sentences across 50 reading sections, with audio for every sentence and word.

Reading 1/49 · 5 reading units · Lines 1–5

Line 1
SOME CRUSTACEANS, MOLLUSCS, AND WORMS.
Line 2
65.
Line 3
SOME COMMON CRUSTACEANS.
/sʌm ˈkɑːmən krəˈsteɪʃənz/
Line 4
1.
Line 5
=The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

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.

crayfish noun US /ˈkreɪfɪʃ/

warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California

From this reading “=The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.”

crustaceans noun US /krəˈsteɪʃənz/

plural of “crustacean” — any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton

From this reading “SOME CRUSTACEANS, MOLLUSCS, AND WORMS.”

districts noun US /ˈdɪstrɪkts/

plural of “district” — a region marked off for administrative or other purposes

From this reading “=The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.”

limestone noun US /ˈlaɪmstoʊn/

a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals

From this reading “=The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.”

lobster noun US /ˈlɑːbstər/

flesh of a lobster

From this reading “=The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.”

streams noun US /striːmz/

plural of “stream” — a natural body of running water flowing on or under the earth

From this reading “=The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.”

surroundings noun US /sərˈaʊndɪŋz/

the environmental condition

From this reading “=The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.”

worms noun US /wɜːrmz/

plural of “worm” — any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae

From this reading “SOME CRUSTACEANS, MOLLUSCS, AND WORMS.”

All words in this reading · 33

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.

1

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

From this reading 1.

65

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

From this reading 65.

adeterminerUS /ə/

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

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

ableadjectiveUS /ˈeɪbəl/

(usually followed by “to”) having the necessary means or skill or know-how or authority to do something

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

ANDconjunctionUS /ənd/

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

From this reading SOME CRUSTACEANS, MOLLUSCS, AND WORMS.

animalsnounUS /ˈænəməlz/

plural of “animal” — a living organism characterized by voluntary movement

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

beauxiliary verbUS /biː/

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

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

COMMONadjectiveUS /ˈkɑːmən/

belonging to or participated in by a community as a whole; public

From this reading SOME COMMON CRUSTACEANS.

crayfishnounUS /ˈkreɪfɪʃ/

warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

crayfishes

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

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

CRUSTACEANSnounUS /krəˈsteɪʃənz/

plural of “crustacean” — any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton

From this reading SOME CRUSTACEANS, MOLLUSCS, AND WORMS.

describedadjectiveUS /dɪˈskraɪbd/

represented in words especially with sharpness and detail

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

districtsnounUS /ˈdɪstrɪkts/

plural of “district” — a region marked off for administrative or other purposes

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

findverbUS /faɪnd/

come upon, as if by accident; meet with

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

HabitsnounUS /ˈhæbəts/

plural of “habit” — an established custom

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

inprepositionUS /ɪn/

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

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

limestonenounUS /ˈlaɪmstoʊn/

a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

lobsternounUS /ˈlɑːbstər/

flesh of a lobster

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

MOLLUSCS

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

From this reading SOME CRUSTACEANS, MOLLUSCS, AND WORMS.

naturaladjectiveUS /ˈnætʃərəl/

in accordance with nature; relating to or concerning nature

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

observedadjectiveUS /əbˈzɜːrvd/

discovered or determined by scientific observation

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

probablyadverbUS /ˈprɑːbəbliː/

with considerable certainty; without much doubt

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

ReadersnounUS /ˈriːdərz/

plural of “reader” — a person who enjoys reading

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

shouldmodal verbUS /ʃʊd/

used to say what is right, expected, or advisable

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

SOMEadjectiveUS /sʌm/

(quantifier) used with either mass nouns or plural count nouns to indicate an unspecified number or quantity

From this reading SOME CRUSTACEANS, MOLLUSCS, AND WORMS.

streamsnounUS /striːmz/

plural of “stream” — a natural body of running water flowing on or under the earth

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

surroundingsnounUS /sərˈaʊndɪŋz/

the environmental condition

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

ThedeterminerUS /ðə/

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

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

theirdeterminerUS /ðer/

belonging to the people or things already mentioned

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

toparticleUS /tuː/

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

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

willmodal verbUS /wɪl/

used to talk about the future, or about willingness

From this reading =The crayfish and lobster.=—(_a_) _Habits._—Readers in limestone districts will probably be able to find crayfishes in the streams, and the habits of the animals in their natural surroundings should be observed and described.

WORMSnounUS /wɜːrmz/

plural of “worm” — any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae

From this reading SOME CRUSTACEANS, MOLLUSCS, AND WORMS.

Chapter 21 of An Introduction to Nature-Study by E. (Ernest) Stenhouse holds 248 sentences, grouped into 50 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 21 of An Introduction to Nature-Study contain?

Chapter 21 holds 248 sentences of An Introduction to Nature-Study, unabridged, divided into 50 reading sections.

This page carries chapter 21 of An Introduction to Nature-Study by E. (Ernest) Stenhouse exactly as it stands in the source edition, without abridgement. It runs to 248 sentences, grouped into 50 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 21 of An Introduction to Nature-Study?

Work through the 50 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 50 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 21 be read aloud to me?

Yes — every sentence and every individual word in chapter 21 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 An Introduction to Nature-Study

Common questions about reading An Introduction to Nature-Study by E. (Ernest) Stenhouse on this page, its source edition and its audio.

Is this the complete text of An Introduction to Nature-Study?

Yes. All 6776 sentences of Project Gutenberg eBook #61273 are kept, with a record of which sentences cover which part.

Which edition of An Introduction to Nature-Study is used?

Project Gutenberg eBook #61273, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does An Introduction to Nature-Study take to read?

About 564 minutes of reading across 1356 sections of 5 sentences each, at an unhurried pace.

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Vocabulary met early in An Introduction to Nature-Study

Words and structures a reader meets early in An Introduction to Nature-Study, each tappable for pronunciation and meaning.

Underscores
A word that appears in the opening chapter of An Introduction to Nature-Study; the reader can tap it to hear it and see its dictionary entry.
Phrase
A word that appears in the opening chapter of An Introduction to Nature-Study; the reader can tap it to hear it and see its dictionary entry.
Indicate
A word that appears in the opening chapter of An Introduction to Nature-Study; the reader can tap it to hear it and see its dictionary entry.
Italics
A word that appears in the opening chapter of An Introduction to Nature-Study; the reader can tap it to hear it and see its dictionary entry.