72 FEEDING WITH CCENUBUS CEEEBRALIS. 



dog, a young hound devoured a similar allowance of Coenurus. 

 He was killed on the 6th August, a day later than the other one. 

 On searching his small intestines eighty-six worms were dis- 

 covered, of which the majority Jiad grown into jointed Teenies of 

 three to ten inches in length, whilst several individuals of from 

 four to five lines long only showed faint signs of the transverse 

 wrinkling, and a few of from one to two lines long were still in 

 the scolex condition without any folds. 



Fifth experiment. Another young hound was, in the same 

 manner, fed, on the 28th July, with the same number of Ccenuri. 

 There might have been about a hundred scolices attached to the 

 coat of the parental vesicle. On the 10th August, the dog was 

 killed after having passed tape-worms an ell long for several days 

 previous to his death. On dissecting the dog no trace of tape- 

 worms could be found. 



Sixth experiment. On the 1st August, a young setter swal- 

 lowed a piece of Coenurus with about a hundred scolices on it. 

 The dog was opened on the 23d August, and showed seventy- 

 three worms, of which only a few individuals of one to two lines 

 long, resembled everted scolices, whilst the remaining ones of 

 one to four inches long had already all the distinguishing cha- 

 racters of Tanice. The characteristic scar was not to be seen in 

 any, whether with or without joints. 



Seventh experiment. On the 1st August, at the same time 

 with the subjects of the foregoing experiments, a similar portion 

 of Coenurus was given to a mongrel- dog, (a cross between the 

 setter and wolf-dog) . This dog subsequently suffered from the dis- 

 temper for a considerable time, and was killed on the 25th August. 

 His intestines contained many full-grown thread-worms, (Ascaris 

 marginata), and a few scolices of Taenia cucumerina, but no trace 

 of worms that should have resulted from the feeding with Coenurus 

 cerebralis. The distemper had probably occasioned the failure of 

 this experiment. 



For the rest, the determination of the Tania which I had 

 obtained from these experiments of feeding with Coenurus cerebralis 

 was not difficult, the characters of the Tosnia serrata being, in all 

 of them, clearly and sharply marked. 



It must have been remarked that in the third and fourth 

 experiments (in which the scolices were retained in the dogs' 

 intestines an exactly similar period of time), the Tceniae in the 

 one dog were twenty-two inches long, whilst those in the other 



