396 INFLAMMATIONS. 



bleeding, will be required, together witli local washes, sueli as 

 (55) or {06). If the eyes still remain covered with a film, a seton 

 may be inserted in the back of the neck with advantage, and kept 

 open for two or three months. 



Cataract may be known by a whiteness more or less marked in 

 the pupil, and evidently beneath the surflice of the eye, the dis- 

 ease consisting in an opacity of the lens, which is situated behind 

 the pupil. It may occur from a blow, or as the result of inflam- 

 mation, or from hereditary tendency. No treatment is of any use. 



In amaurosis the eye looks clear, and there is no inflammation ; 

 but the nerve is destroyed, and there is partial or total blindness. 

 It may be known by the great size of the pupil. 



CANKEll, OR INELAMMATION OF THE EAR. 



From high feeding generally, and exposure to the weather, 

 many dogs (especially of a sporting kind) contract an inflamma- 

 tion of the membrane or skin lining the ear. This produces irri- 

 tation, and the dog shakes his head continually, which together 

 with the tendency to spread externally, causes an ulceration of the 

 tips of the ears of those dogs, such as the hound, pointer, setter, 

 spaniel, &c., which have these organs long and pendulous. Hence, 

 the superficial observer is apt to confine his observation to this 

 external ulceration, and I have even known the tips of the ears 



