DOCHMWS. 



81 



as they are much less efBcient than the first three preparations 

 mentioned. 



The preparatioQ of the animal for the taeniafuge is always an 

 important proceeding, and must always be followed. It consists 

 in letting the animal go hungry for at least p,^ 28. 



one day and giving him also a mild purga- 

 tive to cleanse the intestines, making a clear 

 way for the expulsion of the parasite. After 

 the animal has passed the parasites they 

 ought to be picked up on a shovel or other 

 object and the passage put in the fire to 

 destroy the segments, especially if you have 

 reason to suspect that the taenia echinococ- 

 cus is present, on account of its danger to 

 man. 



R.— Kamala .... 8.0 



Mel q. s. 



Fiat elec. 8. — To be given in two doses. 

 R.— Ext. mix mas. ... 2.0 

 Capsule gelatine No. 1. S. — To be given 

 In one dose. 



n 





Oxyuris Vermicularis. 



By this name (Fig. 28) we mean a small, 

 white, thread-like, round worm. The female 

 is from 9 to 13 mm. in length and the male 

 from 3 to 4 mm. in length. They are gen- 

 erally located in the rectum and lower large 

 intestines. They cause great itching of the 

 anus, and the animal is observed to lick that 

 part constantly and also to frequently pull 

 the hind-quarters over the floor. 



These harmless parasites are removed by 

 clysters composed of solutions of salt-water, quassia bark, vinegar, 

 or a weak solution (1 : 1000) of corrosive sublimate. 



Oxyuris vermicularis : a. 

 magnified diagram of the 

 female ; '&, the male, mag- 

 nified ; c, natural size of 

 the female ; d, natural size 

 of the male. (Viekordt ) 



Dochmius. 



Dochmius (anchylostomum) (Fig. 29) is a small, thread-like 

 parasite which belongs to the family of strongylides. The end of 



6 



