Development of the Round Worm
نویسنده
چکیده
and Coprophagia" (Indian Medical Gazette, August, 1917), namely, (1) that the rat does not act as an intermediate host for A. lumbricoides, but that the larva) which are hatched in the rat's intestine simply take the same course in the rat that they would take in their definitive host, and (2) that the larvae would be found to take the same course in other experimental animals. The latter has been found to be the case by Major Stewart himself at least in so far as the pig is concerned. (Indian Medical Gazette, August 17, 1917, page 272). In Major Stewart's letter in reply to Colonel Lane in the (Indian Medical Gazette, October, 1917, page 379), in which he discusses the positive experiments in feeding Ascaris eggs he summarily dismisses the work of Grassi, Calandruccio and Lutz as " single experiments in impure surroundings" and therefore subject to question. " Epstein's experiments," he says, " I have not been able to find either in original or summary." It is extremely unfortunate that Major Stewart could not obtain Dr. Epstein's work, as a perusal of it would undoubtedly have led him to give more weight to the experiments of the other Helminthologists whose work he dismisses so bruskly. Epstein (Jahrbuch fur Kinderheilk, 1892, N. F. XXXIII., pages 287?301) administered eggs containing living embryos to three children who had been proven to be free from worms, and had been placed on a carefully chosen diet before the beginning of the experiments. The eggs were fed in syrup
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