PARASITIC DISEASES. 913 



Oil of turpentine or of tar j . . . .8 oz. 



Camphor .' 1 dr. 



Asafcetida '. '. .} dr. , 



/ The Fluke Disease, Rot, or Liver Rot.— This malady is 

 most insidious. The first symptoms are obscure ; the sheep feeds, 

 and, in fact, gains 

 in flesh, but the 

 spirits are dull, and 

 the skin, especially 

 on the brisket, is of 



a pale-yellow tint. FlG 130 6.— Spore-case of the Liver Fluke, Greatly Enlarged. 

 The eye secretes a 



yellow fluid ; the muzzle becomes yellowish, and also the tongue, 

 while the * breath is intensely offensive. Sometimes excessive 

 diarrhea prevails, while at 

 other times constipation oc- 

 curs. The wool generally falls 

 off, or is easily pulled out. 

 The muscles waste, the animal « 

 becomes " razor-backed," the 

 hip bones project, the belly is 



pendent, and the back drooped Pm 120 7.-Liver Fluke-lls Digestive System. 



from dropsical effusion. The 



head also droops, the expression is haggard, the appetite poor, the 



thirst great, and the dung filled with myriads of microscopic eggs. 



This terrible disease is 

 caused by the most promi- 

 nent, the most dreaded, and at 

 ■ U iCt^^^^f^^^^S^ . tne same time the most inter- 

 esting of all parasites, the fluke, 

 or liver-fluke. Fig, 1206 rep- 



Fm. 120&-Mature Liver Fluke. r f 5ents the c y st or case in " 



" closing, the liver-fluke. The 



fluke is a flat, whitish, oval-shaped animal, more thickly conical in 



front, and has a sucker, or mouth. Where the thicker part joins 



the flatter hind part, 



there is a second sucker 



on the under side. In 



Fig. 1207, a is the oral 



sucker, b the bulb of 



the oesophagus, and c 



Fig. 1209.— Lanceolated Fluke. the main digestive tube 



