T,t:xiA 



93 



I}. 01. res. fclix mas, 

 Kamala, 



Ol. olivjp, 1 drop. 

 F. M. Capsule No 1. 



I^. Chloroform, 2.0 



01. ricini, 30.0 



Sig. — Give in two doses one week apart. 

 I^. Areca semina piilv., 1.0 [to 3.0 



Sig. — In capsule, honey or milk. 



I^. Kousso, 4.0 to 6.0 



Mel. 



G. S. teaspoonful. 

 F. M. Electuray. 

 Sig.— To be given in two doses, one week apart. 



Oxyuris Vermicularis. — By this name (Fig. 48) 

 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. This parasite is 

 rarely found in the dog. They are generally located 

 in the rectum and the 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 on the floor. 



These harmless parasites are removed by cly- 

 sters composed of solutions of salt water, quassia 

 bark, vinegar or a weak solution (1-2000) of corro- 

 sive sublimate. 



Dochmius. — Dochmius (Anchylostomum uncin- 

 aria) (Fig. 49) is a small, thread-like parasite which 

 belongs to the family of strongylides (palisade worm) . 

 The end of its head is like a bell-shaped capsule, 

 having two small, curved teeth on its dorsal border 

 and four teeth on its ventral border. By means of 

 the bell-shaped disk and the teeth on the inner part 

 of its mouth it sucks and buries its head into the 

 mucous membrane of the intestine and sucks blood. 

 Three forms of this parasite are found in the small 

 intestine of the dog and are described as follows: 

 the Dochmius duodenalis, the male 10 mm. long, 

 the female 12 to 18 mm. long; the Dochmius trigo- 

 nocephalus, the male is 9 to 12 mm. wide, the 

 female 15 to 20 mm. wide, and the Dochmius steno- 

 cephalus, the male is G to 8 mm. long and the 



Fi<;. 48. — OxyurLs ver- 

 micularis : a, magnified 

 diagram of the female; b, 

 the male, magnified; c, 

 natural size of the female; 

 d, natural size of the male 

 {Vierordt). 



