. Elements of comparative zoology. Zoology. Fig. 18.—Diagram of a bit of coral to show the way in which the polyps are con- nected. The coral is black, the digestive cavity shaded. In nature the digestive cavity is divided into small canals con- necting the different polyps. Fig. 19.—Section of a coral cup showing the calcareous septa. After Pourtales. in the walls of the body. In some the individuals (polyps) are separate; in others the individuals repro- duce by division or by budding, and the new polyps thus formed never completely separate from their parents, so that large aggregations or
. Elements of comparative zoology. Zoology. Fig. 18.—Diagram of a bit of coral to show the way in which the polyps are con- nected. The coral is black, the digestive cavity shaded. In nature the digestive cavity is divided into small canals con- necting the different polyps. Fig. 19.—Section of a coral cup showing the calcareous septa. After Pourtales. in the walls of the body. In some the individuals (polyps) are separate; in others the individuals repro- duce by division or by budding, and the new polyps thus formed never completely separate from their parents, so that large aggregations or colonies result. In these one can distinguish the mouths, and usually the tentacles, of. 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 Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
