OF FARRIERS 



521 



PLUMBI OXYDUM SEMIVITRIUM. 



SEMIVITRIFIED OXIDE OF LEAD. 

 LITHARGE. 



This oxide is prepared by the action of heat 

 and air upon lead ; the lead is placed upon a 

 warm furnace on a hollow dish made of ashes, 

 and kept at a red heat with the blast of a large 

 pair of bellows directed on its surface ; an 

 oxide soon appears, and is successively formed 

 by raking of it, and exposing it to a new 

 surface 



Medicinal Uses. — In making the liquor 

 plurabi superacetatis. 



PLUMBI SUPERACETATIS. 



SUPRRACETATE OF LEAD. SUOAR OF LEAD. 



Take of Carbonate of lead 

 Acetic acid 



1 lb. 

 I|- gallon. 



Boil the carbonate of lead with the acid until 

 it is saturated, then filter through paper, and 

 evaporate it until a pellicle appears, then set 

 it aside to chrystallize from off the super natant 

 born fUiidj and dry the chrystals on blotting 

 paper. 



Medicinal Uses. — Cooling, applied exter- 

 nally in the form of solution. 



POTASSiE NITRAS. 



NITRATE OF POTASH. NITRE. 



This salt is both a natural and artificial 

 product, being found on the surface of the soil 

 in some parts of the world, particularly in 

 India ; and prepared artificially in France and 

 Germany, by the decomposition of animal and 

 vegetable matter, after it is purified. It is 

 also formed by the union of potash and nitric 

 acid. 



Medicinal Uses. — Antiseptic, given in doses 

 from one to two ounces j externally in solu- 



tion, one ounce in ten ounces of water as a 

 preventive to gangrene. 



PTERORARPl LIGNUM 



RED SAUNDERS WOOD. 



This tree is a native of the mountains of 

 India and Ceylon ; the wood is brought to 

 England in billets, which are very heavy, and 

 sink in water. It is merely used for its co- 

 louring matter, which it yields readily to 

 spirits. 



QUERCUS CORTEX. 



OAK BARK. 



This is prepared from the small branches in 

 spring, when it contains four times its astring- 

 ent principles to wnat it does in winter 



RESINA FLAVA. 



YELLOW RESIN. 



The residue in the retort, after the distilla- 

 tion of the oil from the common turpentine ; 

 but should the process from the distillation of 

 the turpentine be carried on without water, 

 what remains in the retort will be amber- 

 coloured resin ; but this is easily made yellow, 

 by adding, while fluid, a small quantity of 

 water, shaken together. 



Medicinal Uses. — Diuretic, in doses from 

 3 iv to 5 j, combitied with soap, in the form of 

 ball, making the bolus according to the direc- 

 tions of the College. 



SAPO CASTIL. 



CASTILE SOAP. 



This soap is prepared in Spain (hence its 

 name,) by the combination of barilla with 

 olive oil ; to which is added a small quantity 

 of sulphate of iron, which gives it its marbla 

 appearance. 



6 Q 



