496 Veterinary Medicine. 



tannic acids may also be employed. Decoction of oak bark or 

 solution of blue stone is often used, also creolin or cresol one 

 part, to alcohol five parts. 



It is rarely necessary to use other than the cooling and as- 

 tringent lotions, yet the persistence of irritable sores, ulcers and 

 crusts must be treated as in other chronic skin affections. 



MQIST ECZEMA OF THE PASTERNS IN THE OX. 



Causes : hot season, foul stables, streptococcus. Symptoms : sudden at- 

 tack, red, swollen, warm, tender pastern, vesicles, crust, scabs, lameness, 

 foot rested on toe, cracks, fissures, interdigital foot rot, shedding hoof, 

 scaly chronic form. Treatment : clean stables and yards, cleanse feet, lead 

 lotion or zinc, phenol, iron or copper. Tar water, tar, creolin, creosote, 

 iodo!. 



This affection is comparable to the simpler forms of grease or 

 digital eczema in horses. 



Causes. It occurs especially in the hot mid-summer season in 

 cattle kept in filthy stables, where the feet and pasterns are kept 

 filthy and the air charged with irritant ammoniacal fumes. A 

 streptococcus is usually met with and may be found in pure cul- 

 tures in resulting abscesses. 



Symptoms. The attack is sudden, the skin around the pas- 

 tern becoming red, warm, swollen and tender, with the for- 

 mation of vesicles, isolated or confluent, which rupture and 

 discharge a serous exudate that dries up into crusts and scabs. 

 I<ameness is a marked symptom and in bad cases the swelling 

 and pain are such that the foot may be habitually raised from 

 the ground and rested only on the toe. The swollen skin is 

 thrown into folds which rub on each other, and breaks open into 

 cracks from which exudes a serous fluid that macerates and ir- 

 ritates the skin, the heel pad and the interdigital space, so as to 

 determine interdigital foot rot. This may lead to inflammation 

 inside the hoof with shedding of the horny mass, or it may sub- 

 side into a chronic form with an abundant squamous product. 



Treatment should be mainly prophylactic in the direction of 

 cleanliness and abundant litter in the stables, and the avoidance 



