Powders, &c. 457 



Hydrargyrus cum crcta, P. D. Argent, vivi, mannoe ana 3J ; 

 rub till the quicksilver disappears, then add cretas 5j, rub again, 

 wash out the manna with a pint of warm water, add cretae 5iij more 

 to the sediment while moist, and dry upon blotting paper. 



Hydrargyrus cum magnesia. Argent, vivi, mannae ana 5J, 

 magnesiae albse 3SS ; proceed as in the last. 



Potential cautery, Common caustic, Cauterium potentiale. 

 Lapis septicuSy Causticum commune mitiits. Quick lime, soft soap 

 ana p. aeq. 



Causticum commune fortius, Calx cum cali puro, Potassa 

 aim calce, Cali causticum cum cake. Soap ley made of potash q. v. 

 boil to a third or fourth part, and add lime q. s. to soak up the 

 remaining liquor ; caustic, not so liable to spread as pure potash, 

 but much weaker. 



Lafis medicamentosus. Alum., lithargyri, boli Arm. ana 

 lb. vj, colcoth. vitrioli aceti opt., ana lb. iij ; boil to a stony 

 consistence; astringent, detergent, externally, 3J, to a pint of 

 water. 



Lapis ophthalmicus, L. divinus, Vitr. caerul., alumin., nitri 

 ana 5J ; melt together, adding at the end camph. Sj : used to make 

 an eye water, 5ij to water 4 oz. 



Pierre divine. Roche alum burnt 3 oz., add liquid ammonia 

 5J ; mix, and add vermilion 3j ; for toothache, a piece to be put 

 into the tooth. 



P. de tribus. Scammon.,crem. tartari, antiraon.diaphor. ana 

 p. acq. ; cathartic, gr. xv to 3j. 



P. sTYPTicus, P. sulpliatis alumincB compositus, Aluminis 

 5iv, kino 3J ; styptic, gr. x to xv, or externally to bleeding 

 wounds. 



Mercurius saccharatus. Hydrarg., saccb. albi ana Jss, ol. 

 tanaceti gtt. xvj : rub till the quicksilver disappears : vermifuge, 

 5 j in a day. 



Poudre de lupuline. Lupuline 3j, white sugar 5ij. 



Pate arsenicalk. Cinnab. gr. Ixx, sang, dracon. gr. xxij, 

 arsen. albi gr. viij ; used in cancer, being made into a paste with 

 spittle when usccf. 



PuLvis emmenagogicus. Fol. sabinac sice, zz. ana 3SS, 

 potas. sulphatis 3jss ; to be taken twice a day. 



P. BALSAMicus. Mastich, myrrha?, sarcocollse ana 5 j ; mix; 

 to be sprinkled on bared lx)nes, tendons, and ligaments. 



PuLvis lienteuicus. Pulveris tragacanth. comp., pulveris 

 rhei, ana 5iij, pulveris ipecacuanhac; comp. 5j, hydrargyri cum 



