. Zoology. Zoology. 30 ZOOLOGY. covering of the animals which may be swallowed by the Actinia are rejected from the mouth after the soft parts are digested. Sea-anemones have been found to liave a slight sense of smell, l^earlj all sea-anemones, besides arising from eggs, increase by budding, new individuals arising at or near the base of the large one. The coral polyps only differ from the sea-anemones in secreting a limestone support or coral-stock. Corals are either cup-shaped and single, or are compound, forming. Fro. 31.—Coral polyp {Astroides cah/cidaris) expanded. From Liitken's Zoologj
. Zoology. Zoology. 30 ZOOLOGY. covering of the animals which may be swallowed by the Actinia are rejected from the mouth after the soft parts are digested. Sea-anemones have been found to liave a slight sense of smell, l^earlj all sea-anemones, besides arising from eggs, increase by budding, new individuals arising at or near the base of the large one. The coral polyps only differ from the sea-anemones in secreting a limestone support or coral-stock. Corals are either cup-shaped and single, or are compound, forming. Fro. 31.—Coral polyp {Astroides cah/cidaris) expanded. From Liitken's Zoologj'. branching or rounded masses. The soft parts are supported by limestone partitions secreted in the cliambers of the polyp. All Actinozoans develop from eggs, and at first appear as little oval, ciliated, free-swimming embryos {qastruhv), which eventually become attached to the bottom of the sea. Before the embryo becomes fixed and tlic tentacles arise, the lime destined to form the partitions begins to be de-. 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 Packard, A. S. (Alpheus Spring), 1839-1905. N. Y. , Holt
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1897
