ON A NEW CESÏODE LAßVA PARASïIC IN MAN. 5 



In shape the capsules are generally subspherical or ovoid. 

 While the smallest of them are considerably less than 1 ram. in 

 diameter, others measuring 1-2 mm. or more across are of quite 

 common occurrence. One of the largest I have taken was of an 

 elongate shape, 2h mm. broad and 8 mm. long. Another measured 

 3 mm. by 6 mm. The larger capsules are found only in the sub- 

 cutaneous parts, not in the corium. In the fj-esh state I could 

 isolate the capsules without much trouble by tearing and cutting 

 them off from the surrounding loose tissues. 



The capsular wall (fig. 23), consisting of a dense feltwork of 

 connective tissue fibers of the host, may reach nearly i mm. in 

 thickness. In sections the capsules may appear not unlike a 

 transversely cut blood-vessel on account of the tough and compact 

 looking wall. Seen under the hand-lens, the internal surface of 

 the wall looks smooth. In some large cysts the internal cavity 

 was seen to be traversed by a branching pillar-like trabecula, the 

 presence of which may be explained by supposing an enlargement 

 of the cavity to Jiave taken place around a strong connective 

 tissue bundle or bundles. Under the microscope the internal 

 surface of the wall either shows no special limiting structure or 

 is lined with a deposit of what may be considered to be a granular 

 coagulum or some tissue debris, the same as that which is found 

 free in the cavity together vvith the worm. 



Abundance of the Parasite, — An approximate idea of the 

 enormous numbers of the parasite which infested the patient may 

 be obtained from the fact that in the vertical section of fig. 1, 

 presenting a surface of about 11 sq. cm., there can be counted 

 nearly 60 capsules which had been cut by the knife. So far as 

 concerns the most thickly infested parts of the patient's left 



