40 DISEASES OF SHEEP. 



stances the pox is generally called " malignant pox," which 

 generally presents the following indications : 



Several days before the eruption of the pox the animal 

 appears very «ick, ceasing to ruminate and "eat, and being 

 weary and enervated. Subsequently the pox breaks out 

 upon nearly the entire skin, particularly upon the lips, the 

 jaws and eyelids, and upon the bare parts of the shanks. 

 The affected parts of the skin are hot, swollen and stiffened ; 

 the lips and eyelids especially are swollen to a large extent, 

 such swellings being extremely sensible to the touch or mo- 

 tion. These pox are very numerous and larger than in in- 

 noxious pox, being of a lengthy or oval form, whereas those 

 of the innoxious 2)ox are of a circular form. The pustules 

 in malignant pox are apt to flow together, and by that 

 means to form large and shapeless protuberances and ir- 

 regular figures ; such pox are not very high, are flat in the 

 centre, and, instead of being arched, their surface appears 

 to be depressed ; the color of the pox, as well as of the in- 

 termediate parts of the skin, is either scarlet, red, coppery, 

 purple or bluish-red. It is extremely seldom that malig- 

 nant pox takes the same regular course as innoxious pox ; 

 the pustules do not arch or swell in the centre, they do not 

 fill with lyraph, and do not change to innoxious suppura- 

 tion and into a dry crust ; but they remain in most cases in 

 the same condition as above described until the death of the 

 animal. In many eases they entirely recede before death ; 

 sometimes they fill with a thin, acrid matter (instead of 

 lymph), and change into' deeply extending ulcers (instead 

 of dry crust), thereby destroying large pieces of the skin, 

 especially of the face, the ears and shanks. The affected 

 sheep is scarcely able to move from place to place, and does 

 not move without compulsion ; the animal is unable to 

 move the lips and jaws, which are hot and swollen, and 

 feel as if filled with knots and boils ; it ceases to eat, the 



