. Zoölogy [microform] : descriptive and practical. Zoology; Zoologie. MolJuscoida. ,-^ motion, resemble the rotation of a wheel. These disks can be retracted when the animal wishes Th" usually not exceeding a thirtieth of an inch in len«h They occur in fresh water, and are usuall^ to be fo^d when looking over minute water plants under the micr,^ Kope. They are transparent and arc easily examinrd In heir organs showing without dissection. ThouXsll bordering the disks. lh::taro a Lru''s L'm ^ one or more eyes. system, with They can swim by the action of the cilia and , ,i progress hy a
. Zoölogy [microform] : descriptive and practical. Zoology; Zoologie. MolJuscoida. ,-^ motion, resemble the rotation of a wheel. These disks can be retracted when the animal wishes Th" usually not exceeding a thirtieth of an inch in len«h They occur in fresh water, and are usuall^ to be fo^d when looking over minute water plants under the micr,^ Kope. They are transparent and arc easily examinrd In heir organs showing without dissection. ThouXsll bordering the disks. lh::taro a Lru''s L'm ^ one or more eyes. system, with They can swim by the action of the cilia and , ,i progress hy a looping movement. :hing atr^ateiyby. FIG. «». WheEI, ANIMAIt ULE (RotipE«). From Packard"! ZoJhgy, the two ends ol' the body. The posterior part of the bodv : .eU;rri;'::;rth';f *;."; "^ -'^''-" «^- they Jl revivl ^^t^^ ^::o^,^J: JTl some:a«ho„thi„„edcggsrsri:^ref BRANCH MOLLUSCOIDA. This group gets its name from the fact that some of the forms were once supposed to be moliusks. Th're!° 4o pnncipai classes. *—ic„.^,Ao. 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 Colton, Buel P. (Buel Preston), 1852-1906. Toronto : Copp, Clark
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1903
