Introduction to zoology; a guide to the study of animals, for the use of secondary schools; Year: 1900 (1900s) Authors: Davenport, Charles Benedict, 1866-1944 Davenport, Gertrude Anna Crotty, 1866- Subjects: Zoology Publisher: New York, Macmillan company

Description:

Identifier: introductiontozo00dave Title: Introduction to zoology; a guide to the study of animals, for the use of secondary schools; Year: 1900 (1900s) Authors: Davenport, Charles Benedict, 1866-1944 Davenport, Gertrude Anna Crotty, 1866- Subjects: Zoology Publisher: New York, Macmillan company London, Macmillian and co., ltd. 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: FIG. 202.— Metridium, one of our sea-anemones. Two individuals shownexpanded. Photo, of the living animals in the water, by W. H. C. P. difference in the internal structure. Inside, the centralcavity is separated into compartments by radial partitions.The coral polyp does not differ essentially from Metri-clium. But it has the habit of secreting lime at its base,so that, in course of time, a high cup is built up. The topof the cup bears radial septa,1 which are laid down i Fig. 203. 216 ZOOLOGY in the interspaces between the fleshy partitions men-tioned in speaking of Metridium. Since most corals, like Text Appearing After Image: FIG. 203. — Coral cup of manicina. Nat. size. Photo, by W. H. C. P. hvdroicls, bud freely, and since every bud secretes coral atits base, an extensive and complicated limy mass may beproduced. This is the way in which the brain corals and •6£tt***-.fi-i-^ •*.•>.,- ,
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.