490

REPORT ON ZOOLOGY, MDCCCXLIV.

Demarquay (Gazette Medicate de Paris, 1844, Nr. xix,p. 308) has described an hydatid tumour, which producedgreat pain in the left inguinal region of a man, forty-fiveyears old, and upon being opened, afforded many vesicles,from the size of a liemp-seed to that of a pigeon’s egg.This was an Echinococcus colony, which, as was shown uponinspection of the body five weeks afterwards, was seatedbetween the psoas and iliacus muscles; death ensued, pro-bably from the profuse purulent discharge. In a caseobserved by Stanley (London Med. Gaz. Oct. 1844, p. 101)a moveable tumour presented itself on the fore arm, and oneabove the breast of a healthy young woman; both tumourswere looked upon as abscesses, and were opened with thelancet. From that on the arm a thick purulent matterescaped; from the other, together with the matter, a vesiclewas expelled, which contained an Echinococcus progeny, andwas evidently inclosed in a cyst. Rose (ib. 1844, July,p. 525) has given three cases of Echinoccus hominis, in one ofwhich hydatids were removed from an abscess in the liver;in another hundreds of vesicles were coughed up withhaemoptysis; and in the third case hydatids were expellednot only upwards through the lungs, hut also downwardsthrough the intestinal canal [preceded by painful swellingin the region of the liver]. The same observer found inthe lungs of a Monkey, which had long suffered from coughand dyspnoea, a large colony of Acephalocysts. The lungsin this instance contained seven considerable cysts filled withhydatids; the liver also, and the omentum and mesentery,were loaded with similar cysts, in which several hydatidsof various sizes were inclosed; only a few hydatids weresolitary in cysts, or free in the hypogastric region. Rose wasable to separate a delicate lamina from the internal surfaceof these hydatids, which was beset with spherical, nucleatedcorpuscles. Various cases of disease with hydatids in theliver, lungs, and brain, related by Rayer (Gazette des Hopi-taux, t. v, 1843, p. 581), Griffith (Med. Gazette, August,1844, p. 585), Sturton (Lancet, January, 1841), and others(Provincial Medical Journal, No. 171, January, 1844, p. 275),