Pityriasis in the Dog and Cat. 513 



recommends a combination of ointment of biniodide of mercury; 

 I part, to mercurial ointment 3 parts. Others advocate salicylic 

 acid (10 to 20 %) mixed with Lassar paste which is compounded 

 of I part each of zinc oxide and starch in 4 parts vaseline. 



PITYRIASIS IN CATTLE. 



On neck and dewlap ; Causes : anaemia, debility, spoiled food, starvation, 

 constitutional predisposition. Symptoms: shedding hair and scales without 

 skin thickening, or itching. Treatment ; green soap, tar, creolin, lysol, 

 naphthalin, etc. Alkaline lotions : generally nutritive, succulent food, bit- 

 ters, iron, arsenic, etc. 



This is noticed especially on the neck and dewlap in connection 

 with anaemia, low condition, unsuitable, innutritions and spoiled 

 fodder and a constitutional predisposition. It has the same gen- 

 eral characters as in the horse, an excessive production of dand- 

 ruff or dry scales without any marked change in the thickness of 

 the skin or in its circulation. Treatment consists in the application 

 of green soap, pure or medicated, with tar, creolin, lysol, or other 

 empyreumatic product. Lotions of carbonate or bicarbonate of 

 potash are often effective. Any disorder of digestion, or of the 

 urinary or hepatic functions, or of general nutrition should be cor- 

 rected, and in most cases, a course of bitters, with iron and 

 arsenic is desirable. A good, in-door hygiene or a run on suc- 

 culent grass in the open air may be resorted to with benefit. 



PITYRIASIS IN THE DOG AND CAT. 



Head, neck and back of overfed, old house dogs. Symptoms : floury 

 dandru£r, with little itching or redness, on limited areas ; in cats over the 

 whole back, where stroking causes electric development, the collecting of the 

 hair in tufts, and insufferable irritation. Hair constantly shedding without 

 necessarily bare patches. Treatment : simpler, restricted diet, correct in- 

 ternal disorders, laxatives, arsenic, locally solutions of alkalies, borax, 

 potassium sulphide, sulphur iodide, baths. 



In dogs this affection attacks especially the head, neck and back 

 of pet and house dogs gorged with dainties, and particularly in 

 33 



