On tape and cystic worms : with an introduction on the origin of intestinal worms / by Carl Theodor von Siebold ; translated by T.H. Huxley.

  • Siebold, C. Th. E. von (Carl Th. Ernst), 1804-1885.
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: On tape and cystic worms : with an introduction on the origin of intestinal worms / by Carl Theodor von Siebold ; translated by T.H. Huxley. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    83 brain, about the size of a pin's head. They lay partly free on the vessels in the convolutions of the brain, partly imbedded in superficial canals formed of exuded matter, the substance of the brain representing the bottom, and the exuded matter the cover- ing of the canals. The whole animal (heart, lungs, muscles, was at the same time permeated by the encysted young of the tape-worm. Later dissections showed fewer but larger cysts in the brain. Mr. Haubner conjectures, and rightly so, that the rest were abortive and died away. After fourteen days, always reckoning from the first morbid symptoms, the same observer discovered several dark spots in a few of the cysts, which were probably the projected heads. After four weeks all the cysts had separate heads with distinct suckers; and, as it appeared, with the circlet of hooks in course of development. After having thus proved by facts that the immigrated young of the Taenia serrata in ruminants can develope into Cosnurus cerebralis} I feel justified in advising, as the most important preservative against the Coenurus, that the immigration of the young of the Tcenia serrata into ruminants should be prevented. The utility of this advice will certainly be admitted by every one who has made himself acquainted with the history of the intestinal worms in the foregoing pages of this pamphlet; but beyond this, persons will be also desirous of knowing how it can be practically carried out. When I consider the many hidden paths by which most of the intestinal worms make their way during their existence, I must confess once more that it will be a most difficult task for those engaged in the breeding of cattle to prevent the excessively small young of the tape-worm from pass- ing into their oxen and sheep. It may be safely assumed that the young of the tape-worm pass with the food into the digestive passages of the ruminants whilst they are eating and drinking. How easily the fi-esh as well as the dry fodder of ruminants may become contaminated with the ordure of dogs containing eggs of the Tania serrata; especially when we remember that these eggs possess great tenacity of life, and are able to withstand for a considerable time external injurious influences, such as cold, heat, drought, &c. > Through the kind communication, by letter, of Professor Leuckart, of Giessen, I have just heard that he has succeeded in generating the Cysticercus fasciolaris in tlie livers of white mice, after having given them sexually developed joints of the tape-worm of the cat (Toenia crassicollis) to eat.