90 BOAED OF AGRICULTURE. 



29th of June. It presented nearly the same symptoms as th e 

 former. For the last few days of its existence the right fore- 

 leg was always bent, and in walking it could not support it- 

 self upon its hoofs. In removing the brain from the cranium, 

 a Qoenurus of the size of a small nut fell upon the dissecting 

 table. Two other Coenuri, of the same size, were found in 

 the right hemisphere, one above, the other behind ; and in 

 separating the hemispheres of the cerebellum, I found two 

 others touching the quadrigeminal tubercles. The left lobe 

 of the cerebellum also contained one. Eight were found in 

 all. These Coenuri were nearly all of the same size, except 

 two or three, which were scarcely larger than a cherry-stone. 

 Through the walls of the larger ones the naked eye could dis- 

 tinguish some little whitish flakes, the indications of so many 

 heads (scolices). The smaller ones had no appearance of 

 heads, nor of the place where they were to rise. The Coenuri 

 were enclosed in a membrane of recent formation, produced 

 by the inflammation of the neighboring surfaces." 



Similar experiments, with the same results, were tried by 

 Eschricht at Copenhagen, and Leuckart at Giessen, to whom 

 tape-worms from the same dog were sent. Three sheep were 

 fed by Dr. Eschricht. Of these one was not affected, but the 

 other two became ill on the 15th and 16th days and died four 

 days afterward with the symptoms already described, and in 

 their brains the same kind of young Ooenuri were found. 



In these experimental cases, where large numbers of eggs 

 are given, the symptoms come on violently and death takes 

 place at an early stage in the development of the worms, but 

 under ordinary circumstances only a few eggs are swallowed 

 and then the sheep may live long enough to allow the cysts to 

 become much larger, with more numerous heads. The num- 

 ber of the heads is often 300 or more on a large cyst, and each 

 head is capable of forming a complete tape-worm, with many 

 joints. Allowing 500 sexual joints to each tape-worm, and 

 each joint to contain 5000 eggs, there might result, as the pro- 

 geny of one egg in a single generation, 150,000 joints, con- 

 taining 750,000,000 eggs ! 



Remedies. — The only remedy for sheep with this parasite at 



