new icn messageflickr-free-ic3d pan white
Image from page 175 of "The animans and man; an elementary textbook of zoology and human physiology" (1911) | by Internet Archive Book Images
Back to photostream

Image from page 175 of "The animans and man; an elementary textbook of zoology and human physiology" (1911)

Identifier: animansmanelemen00kell

Title: The animans and man; an elementary textbook of zoology and human physiology

Year: 1911 (1910s)

Authors: Kellogg, Vernon L. (Vernon Lyman), 1867-1937 McCracken, Mary Isabel

Subjects: Zoology Physiology

Publisher: New York, H. Holt and company

Contributing Library: MBLWHOI Library

Digitizing Sponsor: MBLWHOI Library



View Book Page: Book Viewer

About This Book: Catalog Entry

View All Images: All Images From Book


Click here to view book online to see this illustration in context in a browseable online version of this book.



Text Appearing Before Image:

s or boards,on damp soil, etc. They run aboutquickly, and feed chiefly on decayingvegetable matter. They are night-scavengers. Although commonly calledbugs and supposed to be insects,they really belong to the Crustacea,that class of animals which includesFIG. 63. A damp-bug, the crayfish, lobster, and crabs. Ex-Isopod. (Four times amine the body of a dead pill-bug. It is oval and convex above, rather pur-plish or grayish brown, and smooth. Note its division intohead, thorax, and abdomen. Find the eyes, the antennae, andthe mouth-parts. All the locomotory appendages are adaptedfor walking or running, not swimming. How many pairsof legs are there? Find gills and gill covers. Although thepill-bugs do not live in the water they breathe partly atleast by means of gills (though they may breathe partlythrough the skin). It is therefore necessary for them tolive in a damp atmosphere, so that the gill membranesmay be kept damp. If these are not moist, they will notpermit the exchange of gases.


Text Appearing After Image:

ARTHROPODS AND MOLLUSCS 155 Millipeds and centipeds (class Myriapoda).—The Myria-poda are land-animals breathing by means of trachea?like the insects. In them the body-segments are nearlyuniform in character with the exception of the head, which,as in the insects, bears the mouth-parts and antennae. Thereis no grouping of the body-segments into regions except as the head is distinct from the rest of the body. (In a few myriapods there are indications of a division of the hind body into thorax and abdomen.) The presence of true legs on all the



Note About Images

Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.

3 faves