5 6 THE FARM DOCTOR. 



has the power of increasing its numbers almost indefinitely, 

 and growing into enormous multilocular cysts, it becomes 

 extremely injurious and even deadly to its brute, and, above 

 all, to its human victims. One-sixth of the human mortality in 

 Iceland has been attributed to this parasite, and a fatal case in 

 a child has recently come under the writer's notice. Many of 

 the cysts of water found in the liver and other internal organs 

 of the domestic animals are specimens of Echinococcus, and that 

 they are not more frequently fatal may be attributed largely to 

 the shortness of the lives of animals raised for slaughter. They 

 may inhabit almost any organ (liver, lungs, spleen, abdominal 

 walls, kidneys, brain, eye, etc.), and the symptoms will vary 

 accordingly. 



rrfrt/wcfiA— Spontaneous recovery may take place from 

 death or rupture of the sac. Otherwise the true nature of 

 these fluctuating tumours can rarely be recognised, but if they 

 should, they may be punctured with a very fine needle-shaped 

 nozzle, the liquid evacuated with a syringe, and compound 

 tincture of iodine injected into the sac. 



Prevention. — Destroy all superfluous dogs. Keep others 

 from slaughter houses, and deny raw flesh and especially offal. 

 Examine frequently, and if segments of tape-worms are passed, 

 clear them away with vermifuges (see Gid). Burn the dung of 

 all dogs suffering from tape-worms, the contents of evacuated 

 hydatids, and all offal containing cysts. 



MEASLES IN SWINE. 



Fig. 4.— Head of Taenia Solium, magnified. (Cobbold.) 



The bladder-worm of pork (Cysticercus Celhdosa, Fig. 5) is 

 the immature form of a tape- worm of m?Ln {Taenia solium), and 



