118 



PARASITES OF MAN 



Busk. Mr Wilson spoke of the capsule as " a delicately thin 

 proper membrane, by which the Echinococci are connected with 

 the internal membrane of the acephalocyst " (' Med.-Chir. 

 Trans./ 1845, vol. xxviii, p. 21). Mr Busk described the 

 echinococcus-heads as " attached to a common central mass by 



FIG. 31. Group of Ecliinocorcui-heads, from an liydatid found in the liver of a sheep. 

 Magnified about 25 diameters. From a drawing by Professor Busk. 



FIG. 32. Three brood-capsules, containing Kchinococcus-heads. Magnified 76 diameters. 

 After Professor Erasmus Wilson. 



short pedicles, which appear to be composed of a substance 

 more coarsely granular, by far, than that of which the laminae 

 of the cyst are formed. This granular matter is prolonged 

 beyond the mass of Echinococci into a short pedicle common 

 to the whole, and by which the granulation is attached to the 



