. Principles of economic zoo̤logy. Zoology, Economic. Fig. 2 nia sagina'ta. (Eichhorst.) Segments.âThe remainder of the tapeworm, except a short portion immediately posterior to the head, is made up of a series of segments or â proglottides, the number of which varies in differ- ent species. In Taenia solium there are about eight hundred and fifty segments, while in the smaller species there are three or four hundred, and in the larger species, several thousand. These segments or proglottides are derived from the head liy a kind of budding. Thus it is that so long as the head remains the tape
. Principles of economic zoo̤logy. Zoology, Economic. Fig. 2 nia sagina'ta. (Eichhorst.) Segments.âThe remainder of the tapeworm, except a short portion immediately posterior to the head, is made up of a series of segments or â proglottides, the number of which varies in differ- ent species. In Taenia solium there are about eight hundred and fifty segments, while in the smaller species there are three or four hundred, and in the larger species, several thousand. These segments or proglottides are derived from the head liy a kind of budding. Thus it is that so long as the head remains the tapeworm continues to grow. Digestion.âThere is no digestive system, the nutrition simply being absorbed from the liquids of the host. The nervous system consists of a pair of ganglia, from which two main nerve-cords extend back through the length of the worm. The excretory or water-vascular system consists usually 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 Daugherty, Lewis Sylvester, 1857-; Daugherty, L. S. , Mrs. , 1859-. Philadelphia, London, W. B. Saunders
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphila, bookyear1915
