I 



VI. METALS.— Salts. ^ ' 257 



then evaporate to dryness; gr. iij — xv; useful in glandular 

 enlargements of the breasts, chlorosis, &c. This is a muriate of 

 ammonia and iron, is of an orange-yellow colour, and has an 

 odour resembling that of saffron. It is very soluble ; an ounce 

 of water dissolving four drachms of it ; it is also very soluble in 

 alcohols. Alkalies and their carbonates, as also lime water, are 

 incompatible with it. It is tonic, emmenagogue, and aperient. 

 — Officinal preparation. Tinct. ferri ammoniat. 



QUICKSILVER. 



Hydra BGYRUS acetatus, Acetas hydrargyria Acetis hydrargyri. 

 Quicksilver lib., diluted spirit of nitre q. s. to dissolve it; preci- 

 pitate with subcarb. of potash- water, wash and dry the precipitate; 

 then dissolve it in spirit of verdigris q. s. ; filter, evaporate to a 

 pellicle, and crystallize; antivenereal, gr. j, nocte maneque, 

 increasing the dose gradually. 



2. Quicksilver, diluted spirit of nitre q. s. ; dissolve it without 

 heat ; dissolve also Kali acetatum 3iij, m boiling water 1 gall. ; 

 mix the two solutions, set them to crystallize, and wash the 

 crystals. 



Corrosive sublimate. White mercury^ Oxymuriate of quick' 

 silver^ Perchhride of quicksilver, Mercurius corrosivus sublimatuSy 

 M, c. albus, Hydrargyrus muriatus, Hydrargyri oxymuriasy 

 Murias hydrargyri corrosivus. Hydrargyrum muriaticum corro^ 

 sivum. Quik lib., dissolve in nitnc acid about l^lb. ; evaporate 

 to dryness, add decrepitated salt and vitriol calcined white, of 

 each lib.; mix and sublime; or, which is still better, distil from 

 a very low retort, having a wide short neck, into a large receiver : 

 the greater part will come over in the form of a fine white snow. 

 In a bolt head, the newly-condensed sublimate, being liquid, runs 

 down to the bottom, and has got to be raised over again. It took 

 twelve hours to sublime 31b. in a bolt head ; but in a retort 61b. 

 came over in two hours. Composed of 25 quik and 2 chlorine ; 

 equiv. S4'. — Officinal preparation. Liquor hydr. oxymuriatis, L. 



2. Boil quicksilver 21b. in oil of vitriol 21b. to dryness; when 

 cold, add common salt 31b. and a half, and sublime. 



3. Boil quik lib., with oil of vitriol 71b. to dryness ; weigh, 

 and add salt and black oxide of manganese, of each the same 

 weight ; sublime. 



4. Quicksilver 21b., spirit of salt 21b, spirit of nitre lib. ; 

 distil. 



5. Dissolve red precipitate in spirit of salt, and crystallize; 

 antisyphilitic, acting quickly, but not permanently, gr. l-8th to j, 

 twice a day; in gargles, gr. iij to water lib., or as awash m 

 itch ; 3ij a day to a horse, diuretic, enlarging the kidneys, and 



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