272 THh FARM DOCTOR. 



agents, and if it proves obstinate resort to the various internal 

 remedies advised for chronic eczema. Locally use benzoated 

 oxide of zinc ; glycerine and aloes ; camphorated spirit and 

 chloral ; the same with a few drops of tincture of chloride ot 

 iron, etc. When irritation subsides and the scales drop oft, 

 leaving a healthy-looking surface, smear with a bland ointment 

 (spermaceti and almond-oil). 



CUTANEOUS INFLAMMATION WITH NODULAR SWELLINGS. 



TUBERCLES. 



'fhe most remarkable example of this is what is known to 

 horsemen as surfeit, by veterinarians as urticaria. It occurs in 

 spring and autumn in horses, cattle, and pigs, and is at once 

 connected with moulting and sudden changes of food or of 

 weather. With some fever, there appear on different parts of 

 the body swellings varying in size from a pea to a walnui, and 

 often running together so as to form extensive patches, which 

 will close the nostrils, eyeUds, or lips, and put a stop to feeding, 

 or even threaten suff"ocation. There is little pain or tenderness, 

 and the swellings are very transient, appearing and disappearing 

 on different parts at short intervals. 



Treatment consists in clearing out the bowels by a purgative 

 (horse, aloes; ox, salts; pig, oil or jalap), and following this up 

 with bitters (gentian, etc.), and diuretics (nitre, carbonates ot 

 soda, and potassa). 



SCALY SKIN AFFECTIONS. PITYRIASIS. 



These are exemplified in the scurfy, scaly affections which 

 appear in the bend of the knee (mallenders) and hock (sallen- 

 ders), and on the lower part of the limbs, by scratches, and by 

 a scaly exfoliation and shedding of hair of the mane and tace 

 of old horses and of different parts of the body in cattle. Some 

 C'f these, like mallenders, sallendcrs, and scratches, may commence 

 as papules or vesicles, while the scaly affection o*' the face it 



