. Principles of economic zoo?logy. Zoology, Economic. Fig. 35.—Eggs of the gape-worm {Syn'garrms trachea'lis), one of them hatching; enlarged 260 times. (After M^gnin.) Fig. 36.—Windpipe of chicken split open to show gape-worms at- tached to its inner surface; en- larged. (After Megnin.) The hook-worm (Neca'tor america'nus), of the Southern United States and the West Indies, is thought to have been introduced from Africa by slaves. " In hook-worm disease we have ground-itch, tibial ulcer, anemia, inter- ference with physical and mental development, and, in bad cases, dirt ; '
. Principles of economic zoo?logy. Zoology, Economic. Fig. 35.—Eggs of the gape-worm {Syn'garrms trachea'lis), one of them hatching; enlarged 260 times. (After M^gnin.) Fig. 36.—Windpipe of chicken split open to show gape-worms at- tached to its inner surface; en- larged. (After Megnin.) The hook-worm (Neca'tor america'nus), of the Southern United States and the West Indies, is thought to have been introduced from Africa by slaves. " In hook-worm disease we have ground-itch, tibial ulcer, anemia, inter- ference with physical and mental development, and, in bad cases, dirt ; ' Other Species.—There are various other species. Some, as the pin-worm (Oxyuris vermicularis) and the round-worm (As'caris lumhricoi'des), are parasitic in man. Some are parasitic in other mammals and some in birds. One of the latter, Syn'gamus trachea'lis (Fig. 35), about \ inch in length, causes '' gapes " in poultry (Fig. 36). 1 Stitt, 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
