288 THE NATURE AND TREATMENT OF 



cepted metamorphoses, and only gives the resemblance of the 

 tailless cercarioe, with a trematode worm. Dr. Kuchenmeister, 

 of Zittau, instituted ingenious experiments to settle these hy- 

 potheses. He made dogs and cats swallow hydatids, which 

 developed into tape-worms in the intestines. From the hyda- 

 tids of the liver of cats and mice, the taenia crassicollis in the 

 intestines of the cat arose; and from the cysticercus of the 

 hare and rabbit, the taenia serrata in the intestine of the dog ; so 

 that if the water-bladder is lost, the head of the worm attaches 

 itself to the head of the mucous membrane, the rings constitut- 

 ing the body of the tape-worms, including the organs of repro- 

 duction, and they are thus formed. By repeated experiments 

 made by several eminent zoologists, the deductions were con- 

 firmed." 



The liver is sometimes enormously enlarged, in consequence 

 of the presence of a numerous progeny of the fluke-worm. 

 The following case, contributed for The Veterinarian, by Sur- 

 geon J. B. Gregory, will serve to illustrate this matter. The 

 mtfrbid parts referred to were sent by Mr. Gregory to the 

 editor of The Veterinarian, who makes the remarks enclosed in 

 brackets. 



"The morbid parts I send were taken from a well-bred, 

 short-horned cow, six years old, estimated to weigh, when fat, 

 one hundred twenty-five stones of eight pounds. She was pur- 

 chased in August last, with a warranty to calve in Novem- 

 ber following. On September 2d, her owner called on me, and 

 wished me to give her some medicine, as he thought she was 

 not quite recovered from the effects of being driven sixteen 

 miles. The medicine I sent had a beneficial effect, as the cow*s 

 appetite returned, and she appeared to be quite well again. 

 After this I heard no more of her until the sixth of January 

 last, when I was requested to go and give my opinion as to her 

 being in calf, it being two months beyond the time she was ex- 

 pected to calve. I found that her appetite and rumination 

 were natural, the pulse regular, and the kidneys and bowels 

 acting well. There was, however, a peculiar expression of her 

 countenance, that told of continuous pain ; her eyes, also, were 



