An Introduction to Entomology, Vol. 4 of 4: Or Elements of the Natural History of Insects (Classic Reprint) - Softcover
Excerpt from An Introduction to Entomology, Vol. 4 of 4: Or Elements of the Natural History of Insects
Radiata, or star-fish and sea - urchins 3. Thetliird, the; glanglionic, is where the nervo'us system. Cohsistsrof a seriesof ganglions connected by nervous threads or a me dullary chord, placed, except the first ganglion, below the intestines, from which proceed nerves to the various parts Of the body. This system may be considered as divisi ble into two - the proper ganglionic, 'in which it IS gan-l gli'onic with the ganglions arranged in a series with a' double spinal chord. This prevails in the classes Insecta,. Crustacea, Arac/znida, 8tc., and.the improper ganglionic; in which it is ganglionic with the ganglions dispersed irregularly, but connected by nervous threads, as in the Mollusca In the fourt/z, the cerebro-spinal, the ner vous tree may be said to be double, or to consist of two systems - the first taking its origin in a brain formed oi2 two hemispheres, contained, in the cavity of the head,, from which posteriorly proceeds a spinal marrow, in' cluded in a dorsal vertebral column. These, send forth' numerous nerves to the organs of the senses and the. Muscles of the limbs. The second consists of two prin-y cipal ventral chords, which by their'ganglions, but with out any, direct communication, anastomose with the Spinal, nerves and some Of those of the brain, and run one on. Each side from the base of the-skull to the extremity of. The sacrum. This system consists Of an assemblage of nervous filaments bearing numerous ganglions, from. Which nervous threads are distributed to the'organs of.
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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.
Radiata, or star-fish and sea - urchins 3. Thetliird, the; glanglionic, is where the nervo'us system. Cohsistsrof a seriesof ganglions connected by nervous threads or a me dullary chord, placed, except the first ganglion, below the intestines, from which proceed nerves to the various parts Of the body. This system may be considered as divisi ble into two - the proper ganglionic, 'in which it IS gan-l gli'onic with the ganglions arranged in a series with a' double spinal chord. This prevails in the classes Insecta,. Crustacea, Arac/znida, 8tc., and.the improper ganglionic; in which it is ganglionic with the ganglions dispersed irregularly, but connected by nervous threads, as in the Mollusca In the fourt/z, the cerebro-spinal, the ner vous tree may be said to be double, or to consist of two systems - the first taking its origin in a brain formed oi2 two hemispheres, contained, in the cavity of the head,, from which posteriorly proceeds a spinal marrow, in' cluded in a dorsal vertebral column. These, send forth' numerous nerves to the organs of the senses and the. Muscles of the limbs. The second consists of two prin-y cipal ventral chords, which by their'ganglions, but with out any, direct communication, anastomose with the Spinal, nerves and some Of those of the brain, and run one on. Each side from the base of the-skull to the extremity of. The sacrum. This system consists Of an assemblage of nervous filaments bearing numerous ganglions, from. Which nervous threads are distributed to the'organs of.
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.
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- PublisherForgotten Books
- Publication date2018
- ISBN 10 1330132386
- ISBN 13 9781330132388
- BindingPaperback
- Number of pages718
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An Introduction to Entomology, Vol. 4 of 4 (Classic Reprint)
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Book Description Paperback. Condition: New. Print on Demand. Excerpt from An Introduction to Entomology. About the Publisher, Forgotten Books publishes hundreds of thousands of rare and classic books. 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. This text has been digitally restored from a historical edition. Some errors may persist, however we consider it worth publishing due to the work's historical value. The digital edition of all books may be viewed on our website before purchase. print-on-demand item. Seller Inventory # 9781330132388_0
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