<br><p><b>Title</b>: Comparative zoology, structural and systematic : for use in schools and colleges<br><b>Identifier</b>: comparativezool00orto (<a class="external text" href="https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&amp;profile=default&amp;fulltext=Search&amp;search=insource%3A%2Fcomparativezool00orto%2F">find matches</a>)<br><b>Year</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=bookyear1883">1883</a> (<a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=bookdecade1880">1880s</a>)<br><b>Authors</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=bookauthorOrton_James_1830_1877">Orton, James, 1830-1877</a>; <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=bookauthorBirge_E_A_Edward_Asahel_1851_1950">Birge, E. A. (Edward Asahel), 1851-1950</a><br><b>Subjects</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=booksubjectZoology">Zoology</a>; <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=booksubjectAnatomy_Comparative">Anatomy, Comparative</a>; <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=booksubjectPhysiology_Comparative">Physiology, Comparative</a><br><b>Publisher</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=bookpublisherNew_York_Harper_Bros_">New York : Harper &amp; Bros.</a><br><b>Contributing Library</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=bookcontributorSmithsonian_Libraries">Smithsonian Libraries</a><br><b>Digitizing Sponsor</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=booksponsorBiodiversity_Heritage_Library">Biodiversity Heritage Library</a><br><br><b>View Book Page</b>: <a rel="nofollow" class="external text" href="https://archive.org/stream/comparativezool00orto/#page/n268/mode/1up">Book Viewer</a><br><b>About This Book</b>: <a rel="nofollow" class="external text" href="https://archive.org/details/comparativezool00orto">Catalog Entry</a><br><b>View All Images</b>: <a rel="nofollow" class="external text" href="https://www.flickr.com/search/?tags=bookidcomparativezool00orto">All Images From Book</a><br>
Click here to <a rel="nofollow" class="external text" href="https://archive.org/stream/comparativezool00orto/#page/n268/mode/1up"><b>view book online</b></a> to see this illustration in context in a browseable online version of this book.<br><br><b>Text Appearing Before Image: </b><br><i>ECHINODERMATA. 261 inverted, stemless Crinoids. The digestive sac is confined to the disk, and the raadreporic tubercle is concealed.</i><br><b>Text Appearing After Image: </b><br><i>Fig. 213. - Ophiocoma Russei, an Ophiuran; natural size. West Indies. Class III.—Echinoidea. The Sea-urchin is encased in a thin, hollow shell cov- ered with spines, and varying in shape from a sphere to a disk.134 The mouth is underneath, and contains a dental apparatus more complicated than that of any other creat- ure. It leads to a digestive tube, which extends spirally to the summit of the body. The spines are for burrow- ing and locomotion, and are moved by small muscles, each being articulated by ball-and-socket joint to a distinct tu- bercle. When stripped of its spines, the shell (or "test") is seen to be formed of a multitude of pentagonal plates, fitted together like a mosaic.135 Five double rows of plates,</i><br><br><b>Note About Images</b><br></p>
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