DISEASES OF THE SKIN. 497 



the idea first as last ; for the skin of the animal is provided with 

 true glands of this character. 



This disorder, which is also miscalled mange, may be at once 

 known by the enormously thickened hide of the animal, largely 

 devoid of sensation, and the odor which exhales from his body ; the 

 latter is peculiarly acid and rank. The animal passes the entire 

 day in apathy, showing activity at meal time alone or when licking, 

 biting or scratching his body. The hair is more or less removed 

 from the back, and the thickest portion of the skin is just above 

 the neck, or just before the tail. 



This is in a great measure the direct opposite of the preceding 

 disorder, being caused by too exclusive an animal diet, and attacks 

 only very fat and over-fed animals ; uncleanliness contributes 

 much to the disorder also. 



Undoubtedly the best remedy is that said to be practiced by 

 dog fanciers upon the disgustingly obese and ill-tempered animals 

 that enjoy the Hfe peculiar to lap-dogs, viz. : the brute is tied to a 

 crow bar or post in the middle of a yard, kicked that he may wail, 

 and left to exhaust himself with cries, and starved until he looks 

 upon the most dirty and thoroughly picked bone as an especial 

 dainty. This is followed by starvation diet for a few weeks. The 

 treatment is undoubtedly effective, particularly for the class of 

 dogs indicated. 



Low vegetable diet is to be given. If the animal refuse it, let 

 it be at once removed, and not offered again until the following 

 day. If he choose to starve for a week, all the better. Wash the 

 animal with juniper tar soap once every day in the morning if 

 possible, and at night, sponge with a weak solution of chloride of 

 lime. An emetic of ipecac or tartarized antimony may be given at 

 the outset followed by a laxative, (36.) Each day the animal to be 

 exercised thoroughly, and when he begins to accept the food 

 offered he should be given the liquor arsenicalis et hydrargii iodidii, 

 increasing the dose as per prescription 35. Now apply to the back 

 No. 26, 25, or 37. 



Purpura canma, {Mange ?) — This is usually either a disorder 

 of senility or puppyhood, dependent upon imperfect nutrition. It 

 is much the same as scurvy in the human subject, and makes its 

 appearance in an efflorescence of purple and livid spots on the 



