Feb. i8, 1918 



Efficacy of Some Anthelmintics 



407 



mortem o, 49, and 3, respectively. There was no marked effect upon 

 the nodular worms, although one of the sheep passed 2 worms of this 

 species, 175 were found post-mortem, and 143 and 21, respectively, were 

 found in the two others, from whose feces none were recovered after 

 treatment. Two of the 

 sheep showed hook- 

 worms on post-mortem 

 examination, and, al- 

 though none were found 

 in the other one, it is 

 quite probable that none 

 were present when the 

 animal was treated, as 

 none were reco ve red 

 from the feces after 

 treatment. 



Evidently the pow- 

 dered copper sulphate 

 in capsule exhibited no 

 anthelmintic action. On 

 the other hand, sup- 

 porting the experience 

 of Hutcheon, Stiles, and 

 others, a i per cent 

 copper - sulphate solu- 

 tion in 50 -mil doses 

 proved very efficacious 

 in the removal of stom- 

 ach worms. It had no 

 evident effect upon 

 other intestinal para- 

 sites. 



In view of the efficacy 

 of the copper-sulphate 

 solution, a test was 

 made to determine how 

 readily and easily it 

 could be administered, 

 with a view to deter- 

 mining whether large 

 numbers of animals 

 could readily be treated with the solution. A dosing apparatus devised 

 by the senior writer was constructed and used as follows : 



A I per cent solution of copper sulphate was made up and placed in 

 a small water-tight keg (fig. i). At the side of the keg, near the bottom, 



Fio. 



I. — Apparatus, with control, for administering copper- 

 sulphate solution to sheep. 



