. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. HYDRA 265 poison, and soon conveyed to the Hydra's mouth. The principal food of Hydra consists of small worms and the smaller Crustacea, such as Daphnia and Fig. 254. — A colony of Cordylophora l(wvstris, on a shell of Mytilus. For clearness, a number of the erect branches are cut off at the stolon, a, very young shoot without lateral branches ; b, young stock with lateral branches but no gonophores; c, a stock with gonophores on lateral branches; d, fully grown stock with lateral stems. After Schu
. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. HYDRA 265 poison, and soon conveyed to the Hydra's mouth. The principal food of Hydra consists of small worms and the smaller Crustacea, such as Daphnia and Fig. 254. — A colony of Cordylophora l(wvstris, on a shell of Mytilus. For clearness, a number of the erect branches are cut off at the stolon, a, very young shoot without lateral branches ; b, young stock with lateral branches but no gonophores; c, a stock with gonophores on lateral branches; d, fully grown stock with lateral stems. After Schulze. Fresh-water Hydroids are of extremely few kinds. Hydra was once regarded as the only instance, but others are now known. One of these, called Cordyloph'ora (Fig. 254), is found chiefly in brackish water or in fresh water near the coast. Like many of the marine hydroids, Cordylophora produces its young in special capsules, called gonophores, which are rudi- mentary jellyfishes (Fig. 254, c). The young become free when. 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 Davenport, Charles Benedict, 1866-1944; Davenport, Gertrude Anna Crotty, 1866- joint author. New York, Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1911
