182 yeteri:n"ary materia medica. 



Specific gravity, 0.940 to 0.955. When fresh it is 

 soluble in about GO parts of alcohol, the solubility and 

 therapeutic activity increasing with age. It is freely 

 soluble in ether, chloroform, and other oils. Contains 

 several fatty and volatile acids, one of which is known 

 as tiglinic acid. Dose: H., lUxv.-xxx. ; C, fl. 3 ss.- 

 i. ; D., mi.-iij. 



Croton oil is a drastic purgative, producing copious 

 watery evacuations. It is somewhat too irritant for 

 general use on the horse, and is more often employed 

 in cattle practice, since it acts quicker than aloes. 

 Large doses act as a corrosive poison. Externally it 

 is a powerful irritant, causing a special vesicular 

 eruption, which gradually becomes pustular. On 

 account of its liability of leaving a permanent blem- 

 ish, it is but little used externally. On the dog and 

 pig its purgative qualities are not accompanied by as 

 much irritation as with the horse. 



Gambogia, gamboge, gum gutti, a gum resin ob- 

 tained from Garciniahanburii, a medium-sized tropi- 

 cal tree of Siam, Burmah, and Ceylon. It is a very 

 powerful irritant and drastic, hydragogue cathartic, 

 given chiefly to cattle in obstinate constipation, brain 

 diseases, parturient apoplexy, etc., and is second only 

 to croton oil for activity. It is usually conjoined in 

 smaller doses with other cathartics — as Epsom or 

 Glauber's salt. Dose: C, Jss.-i.; S., gr. xx.-xxx. 



Eserince Salicylas^ Chrysostigmince Salicylas. — 

 See under Calabar Bean. 



Bar a Chloindnm, barium chloride — (BaCljH- 

 2H,0) — colorless, flat, four-sided crystals, of a bitter, 



