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قراءة كتاب The Insect World Being a Popular Account of the Orders of Insects

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The Insect World
Being a Popular Account of the Orders of Insects

The Insect World Being a Popular Account of the Orders of Insects

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دار النشر: Project Gutenberg
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The Dragon-fly (Libellula depressa).
    a. Perfect Insect.     b. Perfect Insect emerging from the Pupa.     c. d. Larvæ and Pupæ.

THE

INSECT WORLD:

BEING

A Popular Account of the Orders of Insects;

TOGETHER WITH

A DESCRIPTION OF THE HABITS AND ECONOMY OF
SOME OF THE MOST INTERESTING SPECIES.

BY
LOUIS FIGUIER.

A New Edition,

REVISED AND CORRECTED BY P. MARTIN DUNCAN, F.R.S.

—————
WITH 579 ILLUSTRATIONS.
—————

D. APPLETON AND CO.,

NEW YORK.


PREFACE.

This popular French book on Insects has been placed in my hands in order that the scientific portions of it should be examined and, if necessary, corrected. This task has been a light one, for the book had already passed through the able editorship of Mr. Jansen. But I have added a short notice of the Thysanoptera, which did not appear in M. Figuier's original work, and also the necessary information respecting the evolution of Stylops.

P. MARTIN DUNCAN.
Lee, 1872.


The Insect World.


INTRODUCTION.

It is not intended to investigate the anatomy of insects in this work thoroughly; but, as we are about to treat of the habits and economy of certain created beings, it is necessary first to explain the principal parts of their structure, and the stages which every perfect insect or imago has undergone before arriving at that state.

We, therefore, proceed to explain, as simply as possible, the anatomy of an insect, and the functions of its organs.


Fig. 1.—Head of an Insect

If we take an insect, and turn it over, and examine it carefully, the first thing that strikes us is that it is divided into three parts: the head; the thorax, or chest; and the abdomen, or stomach.

The head (Fig. 1) is a kind of box, formed of a single piece, having here and there joints more or less strongly marked, sometimes scarcely visible. It is furnished in front with an opening—often very small—which is the mouth; and with some for the eyes, and with

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