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Some Stoneflies Injurious To Vegetation

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Some Stoneflies Injurious To Vegetation

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Author : Erval Jackson Newcomer
language : en
Publisher:
Release Date : 1918

Some Stoneflies Injurious To Vegetation written by Erval Jackson Newcomer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1918 with Stoneflies categories.

A Treatise On Some Of The Insects Injurious To Vegetation

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Author : Thaddeus William Harris
language : en
Publisher:
Release Date : 1862

A Treatise On Some Of The Insects Injurious To Vegetation written by Thaddeus William Harris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1862 with Beneficial insects categories.

A Treatise On Some Of The Insects Injurious To Vegetation Classic Reprint

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Author : Thaddeus William Harris
language : en
Publisher: Forgotten Books
Release Date : 2017-11-19

A Treatise On Some Of The Insects Injurious To Vegetation Classic Reprint written by Thaddeus William Harris and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-19 with Science categories.

Excerpt from A Treatise on Some of the Insects Injurious to Vegetation The word Insect, which, in the Latin language, from whence it was derived, means cut into or notched, was designed to express one of the chief characters of this group of animals, whose body is marked by several cross-lines or incisions. The parts between these cross-lines are called segments, or rings, and consist of a number of jointed pieces, more or less movable on each other. Insects have a very small brain, and, instead of a spinal marrow, a kind of knotted cord, extending from the brain to the hinder extremity; and numerous small whitish threads, which are the nerves, spread from the brain and knots, in various directions. Two long air-pipes, within their bodies, together with an immense number of smaller pipes, supply the want of lungs, and carry the air to every part. Insects do not breathe through their mouths, but through little holes, called spiracles, generally nine in number, along each side of the body. Some, however, have the breathing-holes placed in the hinder extremity, and a few young water-insects breathe by means of gills. The heart is a long tube, lying under the skin of the back, having little holes on each Side for the admission of the juices Of the body, which are prevented from escaping again by valves or clappers, formed to close the holes within. Moreover, this tubular heart is divided into several chambers, by transverse partitions, in each of which there is a hole shut by a valve, which allows the blood to ﬂow only from the hinder to the fore part of the heart, and prevents it from passing in the contrary direction. The blood, which is a colorless or yel lowish ﬂuid, does not circulate in proper arteries and veins; but is driven from the fore part of the heart into the head, and thence escapes into the body, where it is mingled with the nutritive juices that filter through the Sides Of the intestines, and the mingled ﬂuid penetrates the crevices among the ﬂesh and other internal parts, ﬂowing along the Sides Of the air pipes, whereby it receives from the air that inﬂuence which renders it fitted to nourish the frame and maintain life. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

A Treatise On Some Of The Insects Injurious To Vegetation

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Author : Harris
language : en
Publisher:
Release Date : 1862

A Treatise On Some Of The Insects Injurious To Vegetation written by Harris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1862 with categories.

A Treatise On Some Of The Insects Injurious To Vegetation

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Author : HardPress
language : en
Publisher: Hardpress Publishing
Release Date : 2013-06

A Treatise On Some Of The Insects Injurious To Vegetation written by HardPress and has been published by Hardpress Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06 with categories.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.