CANKER. 173 



thoroughly pare and examine a foot with the shoe on " (Malcolm). 

 Moller, following Piitz, considers the best caustic to be nitrate of 

 lead, which may be applied in powder to the diseased surface. It 

 dries up and checks the gro^vth in a very effective manner. The 

 resulting scab should be examined from day to day, so that if any 

 of the parts underneath it become moist (thereby indicating fresh 

 jDoints of infection), the scab may be picked off and the caustic re- 

 applied. 



It is evident that the stricter antiseptic precautions are ob- 

 served, the better will be the result. After using the drawing 

 knife on the diseased horn, it should, before employing it again on 

 the part, be disinfected (p. 70). Instead of tow as a dressing, we 

 might use antiseptic cotton w^ool; disinfect the Whole of the foot 

 by washing it with strong carbolic soap and afterwards with an 

 antiseptic solution (p. 67) ; and remove the horse into a fresh stall, 

 so that he may not stand on a contaminated surface. 



When using the hot iron, care should be taken not to destroy 

 any part of the secreting membrane ; for if that be done, the seat 

 of injuiy will lose its power to secrete horn, and a troublesome sore, 

 ending with a scar, will be the result. " The cautery should be 

 laid aside as soon as the tissue cauterised ceases to burn white " 

 (Malcolm). 



Acting on the supposition that canker is a parasitic disease, 

 Nocard has treated cases of it very successfully with a solution of 

 corrosive sublimate (10 grains to the pint of water), which he ap- 

 plied by means of a pulverisator, which is an instrument for forcibly 

 directing a fine jet of fluid on any particular part. Having pared 

 down the foot, removed with the drawing knife the undermined 

 horn, and secured the animal in the stocks, Nocard projects with 

 considerable strength the vapour of the corrosive sublimate solution 

 on the ground surface of the aft'ected foot for two hours and a half. 

 After an interval of a quarter of an hour to allow the parts to 

 become dry, the procedure is finished by repeating the operation 

 for about ten minutes with a saturated solution of iodoform in 

 ether. In one case, a single application of this kind, followed by 

 an ounce of liquor arsenicalis in the food for a week, effected a com- 

 plete cure. 



Veterinary Surgeon Rexilius of the German Army states that he 

 cured a bad case of canker in fourteen days by, after having re- 

 moved all the disintegi'ated tissue, pouring creasote over the affected 

 parts twice a day. Following this advice, Mr. F. E. Place, 

 M.K.C.V.S., reports ("Veterinarian," July, 1894) that he has had 

 similar success with two old and severe cases of this disease. He 

 used from 30 to 40 minims of creasote as a dressing twice a day. 



In an article of " The Veterinarian," translated from " Recueil 



