. Zoology : for students and general readers . Zoology. 170 ZOOLOGY. while the male is unknown. The worm li\'cs in the con- nective tissue vtndei- the skin, especially of the extremities. As the body of the female is full of young, the worm has to he carefully and slowly extricated, so as not to be broken and cause the embryos to be scattered under the skin of the host. Carter regards a small worm (Urolahes paludris) frequent iu brackish water, as the immature form of the Guinea-worm. It is also believed that the embryos enter the bodies of water- fleas (Cyclops, etc.), and there moult, and th
. Zoology : for students and general readers . Zoology. 170 ZOOLOGY. while the male is unknown. The worm li\'cs in the con- nective tissue vtndei- the skin, especially of the extremities. As the body of the female is full of young, the worm has to he carefully and slowly extricated, so as not to be broken and cause the embryos to be scattered under the skin of the host. Carter regards a small worm (Urolahes paludris) frequent iu brackish water, as the immature form of the Guinea-worm. It is also believed that the embryos enter the bodies of water- fleas (Cyclops, etc.), and there moult, and that consequently they may bo introduced into the body by drinking standing water ; but this has not been proved. Other species live in the peritoneum of the horse and apes, and an immature species {Filaria lentlH) has been found in the lens of the liumau eye. Filaria sangxtinis-lioininis is a worm of microscojoic size found living in the blood of the mosquito in India and China. It is said that the eggs are swallowed in the water drunk by man, are hatched in his intestines, and obstruct the smaller blood-vessels, causing, it is claimed, various forms of elephantoid disease, jierhaps even leprosy. The mosquito sucks ujj the parasite in the blood of leprous pa- tients, voiding the eggs in the pools it frequents. Filaria fiemaiica has occurred in the blood of the foetus of a dog whose heart was filled with them. Grains of wheat are often infested by a minute Nematode {Tylenchus scandens Schneider, Anguil- lula tritici of Need- ham. Pig. 118). Other species live iu flowers, moist earth, and sour decaying substances. Anguil- lula aceti Eliren- berg is from one to two millimetres iu length, and lives iu vinegar. The genus Chmto- sonia lives free iu the sea, and has a broad swollen head beset with fine hairs. It apparently connects the true Nematodes with Fig. 118.—Young Wlieat Worm, greatly maguifled. c, section of a gram exhibiting !^ome worms and multi- tudes ol eggs, ma
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879
