488 Veterinary Medici7ie. 



somewhat glutinous serous product, which mats the hairs into 

 tufts and exposes the intervening red, excoriated skin, with here 

 and there vesicles singly or in groups. Itching is usually in- 

 tense and the animal licks, rubs and scratches the affected sur- 

 face unmercifully. The resulting excoriations and sores add 

 greatly to the severit}' of the troubles, including ulceration, bleed- 

 ing and even sloughing. 



Treatment. Prophylaxis should be the first consideration, and 

 in the acute stages of the disease, its arrest by soothing applica- 

 tions. Cleanliness, pure air, and tepid sponging, to be followed 

 by a dusting powder of boric or salicylic acid, or a lotion of ace- 

 tate of lead or sulphate.of zinc may serve a good purpose. If the 

 case proves obstinate, the hair may be clipped or shaved to allow 

 of the more direct and thorough application of the dressings. 

 Cadeac especiallj' recommends an ointment of calomel (1:10) 

 but this must not be applied over an extended surface, nor must 

 it be recklessly repeated owing to the dangerous susceptibility of 

 the bovine race to mercurialism. 



Lotions and ointments of carbolic acid are of great value in 

 moderating tlie intense pruritus, and a combination of this with 

 lead acetate will often prove quite effective. lyOtions, liniments 

 or ointments of tar, oil of cade, creosote, or creolin. When ul- 

 cers are present thej' may be treated by solutions of silver nitrate 

 (2 : 100) or cupric sulphate (2 : 100) or powdered iodoform. 

 When the exudate is excessive, astringent dusting powders often 

 serve a good purpose ; tannic acid and boric acid, with starch or 

 lycopodion. 



CHRONIC ECZEMA IN CATTLE. 



Summer disease. Depilation. Scaly. Itchy at first. Lesions of bones, 

 red zones representing successive attacks. Alterative tonics indicated. 



Megnin records the case of an ox which on three successive 

 springs had a miliary vesicular eruption on the loins and upper 

 walls of the abdomen, which persisted until the advent of cold 

 weather in the fall. The vesicles were followed by an exudate 

 which concreted in solid crusts, enveloping the roots of the hairs 

 which were lifted from the follicles and failed to be renewed, .so 



