48f) REPORT ON ZOOLOGY, MDCCCXLIV. 



solid residue of 26-79, and when burnt, 4'57 of inorganic 

 salts, consisting of sulphate, phosphate, and carbonate of 

 soda, chloride of sodium, and phosphate of lime. Thus this 

 solid residuum contained 22'22 protein substance, and 4'57 

 salts. The remarks added by Thiel on the Echinococcus are 

 of no value ; the four acetabula are regarded as so many 

 oral orifices of the young Echinococci ; which latter, after 

 throwing off the crown of booklets and the acetabula, are 

 transformed into acephalo-cysts, a proceeding, however, that 

 has not been directly observed by Thiel. Since, in Cattle 

 and Sheep, the production of hydatids in the lungs and 

 liver is much promoted by moist localities and unfavorable 

 weather; it would appear, according to Thiel, that in man 

 also unfavorable endemic and epidemic conditions, connected, 

 probably, with bad, innutritions food, might not be without 

 influence in the production of the Echinococcus. He men- 

 tions a case observed in the Julius Hospital, at Wurzburg, 

 in which a soldier, who had served, under very unfavorable 

 circumstances, in Greece, was affected with Echinococcus in 

 the liver and spleen. In another Dissertation, Mielay 

 (Alex. Mielay de hydatidibus et cysticis, Pars prior Dissert. ; 

 Berolin, 1844) collects the older views respecting the origin 

 and propagation of the Cyst-worms, without being acquainted 

 with the most recent researches on this subject. The 

 Eeporter has given a figure of the characteristic booklets 

 of which the circlets in the Echinococcus-brood are composed, 

 as well as of the laminated structure of the cysts. (YogeFs 

 Icones Histologias pathologic^, tab. xii, fig. xi.) 



From Lebert's description of the Echinococcus hominis we 

 gather only what is already well known. His observation of 

 the ciliary motion, which he thinks he perceived in the 

 interior of the still living and spontaneously moving animals, 

 is new. Under " spontaneously moving animals" can, 

 however, be understood only the young of the Echino- 

 coccus. It were much to be wished that Lebert had stated 

 more particularly where he saw the ciliary organs ; at all 

 events, it is not made at all clear to the Reporter in what 



