Acute Arsenical Poisoning. 269 



nitrate of potash. The former is also given in mistake for com- 

 mon salt. The toxic dose is high. Morton gave 2 pounds salt- 

 peter to a horse with only a temporary purgative and diuretic 

 effect. Huzard found that 3 doses of 16 ounces each, given at 

 intervals of 8 days sufficed to kill a horse. Cattle are said to 

 have died from taking 5 to 6 ounces. 



Symptoms There are colics, tympany, eniesis in vomiting 

 animals, salivation, dilated pupil, diarrhoea, diuresis, hypothermia, 

 stupor, palpitations, weak pulse, trembling, convulsions, tetanic 

 symptoms, paralysis. 



Lesions. Congestion of a cherry red , brown or purple of the 

 gastric mucosa and that of the small intestine, erosions and 

 ecchymosis, congestion and ecchymosis of the kidney and of the 

 mucosa of the bladder. Blood uncoagulated and of a bright red. 



Treatment. Favor emesis or use stomach pump according to- 

 the species of animal. Give abundance of water- or mucilaginous 

 fluids by mouth and anus. Stimulants may be resorted to ifl case 

 of sinking or collapse. 



ACUTE ARSENICAL POISONING, ARSENIOUS ACID, 

 PARIS GREEN. 



Acute poisoning . Sources. Lethal dose, horse, ox, sheep, dogs, pigs. 

 Endertnic. Symptoms : colic, weak pulse, rapid breathing, red eyes, dilated 

 pupils, purging, weakness, trembling, stupor, convulsions, paralysis, green 

 or yellow vomit, test of urine. Lesions: gastro-intestinal inflammation,. 

 ropy, bloody mucus, ecchymosis, extravasation, ulceration. Treatment : 

 emesis, stomach pump, hydrated iron oxide, calcined magnesia. — Chronic 

 poisoning. Excessive administration, arsenical fumes from smelting 

 furnaces. Symptoms : indigestion, emaciation, hidebound, depilation, red 

 eyes, diarrhoea, agalactia, weakness, paraplegia, salivation. Lesions : eis in 

 acute, fatty liver, test of urine. Tests : on hot charcoal garlic odor, Marsh's 

 test by zinc and sulphuric acid. Treatment : avoidance of cause, antidotes- 

 demulcents, diet. 



Arsenious acid given recklessly as medicine, rat poison, arsen- 

 ite of .soda made into a sheep dip and left within reach of animals, 

 and arsenite of copper used for potato bugs, or other insect pests- 

 and carelessly left where animals can get it are the most common. 



