. Cassell's natural history. Animals; Animal behavior. THE Lvxa half of an ineli in lengtli, and tlie lattt'i-has along hair-liko tail witji a tliree-pointeil end, the tail of the male being blunt. The body is fusiform, and the fiont cud is narrowed at the truncated head, which is sometimes rendered very conspicuous by a bulging of the transpai-ent membrane which surrounds the mouth. Tliis lias three papillse around it, and leads to a triangular oesophagus. There is no doubt tliat the worm is introduced in the form of an egg. The worms live in the cajcum, which is their proper positio
. Cassell's natural history. Animals; Animal behavior. THE Lvxa half of an ineli in lengtli, and tlie lattt'i-has along hair-liko tail witji a tliree-pointeil end, the tail of the male being blunt. The body is fusiform, and the fiont cud is narrowed at the truncated head, which is sometimes rendered very conspicuous by a bulging of the transpai-ent membrane which surrounds the mouth. Tliis lias three papillse around it, and leads to a triangular oesophagus. There is no doubt tliat the worm is introduced in the form of an egg. The worms live in the cajcum, which is their proper position. They stray to the lower bowel and produce irritation there. Several species of Ascaris are parasitic within children and adults, and aftect monkeys, horses, dogs, pigs, bears, oxen, mice, birds, and marsupials. The species infecting man and the pic are sometimes identical, and this is the case in the example which must be taken as the type. The lar"e round worm, which measures from four to six inches in length in the male, and from ten to fourteen in the female, is at first sight not unlike a pale Earth Worm. They are narrowed at each end, and the body is elastic and marked by numerous fine cross striations. This Ascaris lumbricoides is usually found solitai-y or iii small numbers in the upper and middle part of the small intestine ; from 100 to a 1,000 have been found. They wander into the stomach and are cast forth, or they may get up into the nostrils and escape. They may make their way through the coils of the intestine into the cavity of the body, producing inflammation and abscess. "â '""""'â The Lung Worm* is often fatal to calves, and a closely allied species attacks lambs. The eggs and embryos of the Lung Worm are found within the common Earth Worm, which swallows them mechanically, with its food of soil. Cobbold placed some of these embryos, or larvae, as he calls them, which he got from an Earth Worm, on to the fronds of watered fer
Size: 1940px × 1288px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjecta, booksubjectanimals
