. Animal life as affected by the natural conditions of existence. Animal ecology. 168 THE INFLUENCE OF INANIMATE SUEEOUNDINGS. appendages of the skin, known as gills or branchiae, and finally the interior of the intestinal canal. In very many Invertebrate animals—as in Holothuria, Annelida, Planarians, Water-Insects, and others—a constant stream of water enters by the amis, and. Fig. 47.—a, Anabas scandens', head, with A the gill-cavity laid open, and/ the conti- guous cavity containing the foliated labyrinthine structure. 6, Tadpole; c, young Polyptern from the Hile; (2, embryo of the Shark.
. Animal life as affected by the natural conditions of existence. Animal ecology. 168 THE INFLUENCE OF INANIMATE SUEEOUNDINGS. appendages of the skin, known as gills or branchiae, and finally the interior of the intestinal canal. In very many Invertebrate animals—as in Holothuria, Annelida, Planarians, Water-Insects, and others—a constant stream of water enters by the amis, and. Fig. 47.—a, Anabas scandens', head, with A the gill-cavity laid open, and/ the conti- guous cavity containing the foliated labyrinthine structure. 6, Tadpole; c, young Polyptern from the Hile; (2, embryo of the Shark. AIL these have external gihs, br. in a few cases, as in Holothiiria, a very easily demonstrable stream passes out from it also. Thus, in the simplest condition, the mucous membrane of the intestine serves for respuation, like the skin of an animal; and in this respect the well-known. 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 Semper, C. (Carl), 1832-1893. New York, D. Appleton
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishernewyo, bookyear1881
