CHAPTER XVIII. 



Local jVon-Contagious Diseases. 



In the arrangement of this work a few diseases which did 

 not especially belong with those already classified have been in- 

 serted under the above heading. Among such are several of 

 those affecting the integument and glands of the skin and also 

 certain conditions affecting the feet. We shall now consider 

 such diseases of the skin as are dependent on constitutional 

 derangement either from errors in diet or from faulty excretion 

 of effete materials, due to an abnormal condition of the glands. 



Gczcttia. 



This is a common affection among sheep, especially with 

 young immature animals which are highly fed to prepare them 

 for exhibition purposes. 



While eczema is recognized in several different fonus, we 

 find that the vesicular is that to which sheep are more generally 

 liable. 



The attack comes on suddenly, the parts attacked generally 

 being the face and lips, but it also may attack any of the parts of 

 the skin, especially those where the fleece is lightest, such as the 

 belly, inside of thighs and armpits. 



The visible symptoms are intense itching, the animal rubs 

 itself violently, small vesicles appear on the affected parts. 

 These I'uptiire, discharge a watery fluid, and, on drying up, a small 

 nodule remains in the place of each vesicle, which might be mis- 

 taken for scab, from which, however, it is easily differentiated, 

 as an examination of the parts will reveal the absence of para- 

 sites. 



