PARASITIC DISEASES 



917 



the sheep, ana is sometimes 

 specifically known as the 

 diving bladder-worm. This 

 is treated of elsewhere 

 Another — polycephalus ovi- 

 nus — infests the brain, and 

 causes the disease we are 

 now considering. (See Fig. 

 1213, with the accompanying 

 explanations.) 



The animal is .shown in 

 Fig. 1214 in the non-sexual 

 or non-generating condition, 

 in the head of a sheep, in 

 which it produces the feeling 

 of giddiness that gives the 

 disease its name. 



The formation of the first 

 segment, head, or scolex of 

 the ccenure, is shown in Fig. 

 1215. 



Fig. 1214.— Head of a Sheep, with Hy- 

 datid in the Front Lobe of the Brain. 



Fig. 1213.— Coenums (Hydatid) of the Sheep. 



1. Vesicle containing groups of heads of the hyda- 

 tid, natural size; 3. Two groups of heads, enlarged 

 four times; 3. Head still more greatly enlarged. 



The symptoms of the turnsick in 

 sheep are curious, and well marked. 

 At first the animal staggers and reels, 

 walking round in a circle, and often 

 running against obstacles. Some- 

 times the entire brain is eaten away 

 before death ensues. 



One of the remedies employed is 

 the introduction of a trocar and 

 canula into* the soft spot in the skull, 

 and , the , application of a syringe 

 through the latter. Another is to 

 puncture, with the needle of a strong 

 hypodermic syringe, the walls of the 

 cyst inclosing the Hydatid, and to in- 

 ject therein some of the following, or 

 of a similar solution : — 



Iodine 1 gr. 



Iodide of potash 5 oz. 



Water l z. 



Mix, and use half ateaspoonful at a time. 



