254 VI. METALS.—Salts. 



From Pegu; used in India, and brought to Europe by the 

 Dutch. 



Roman vitriol, Cyprian vitriol. Vitriol de Chypre, V, 

 Cyprium. Made by letting the water of copper-mines evaporate 

 in shallow ponds. From Cyprus, in small sky-blue crystals. 



SwEDiscHE VITRIOL, Falii viktril, V, triplum. Made by eva- 

 porating the water of the copper-mine at Fahlun ; blue rather 

 than green. Contains iron, copper, and zinc; does not copper 

 iron by being rubbed upon it : nine shades of colour are made. - 



GosLAR BLUE VITRIOL, V, cuprotum. Pale blue-green crystals, 

 very large and transparent, having the form of those of pure 

 sulphate of iron. Contains both copper and zinc. 



Hungarian blue vitriol, V. Hungaricum. By evaporating 

 the water of copper-mines. 



Solution of sulphate of copper. Blue vitriol water. Blue 

 vitriol purified by repeated solutions and crystallizations ^j, 

 water ^v ; dissolve. Used as a test for arsenic. 



Ammonia sulphate of copper. Cuprum ammoniatum. Ammo- 

 niuretum cupri. Blue vitriol 3iv, subcarb. of ammonia 5VJ ; grind 

 together, and dry by means of filtering paper ; tonic, antispas- 

 modic. Used in epilepsy and chorea, gr. ss, gradually increased 

 to gr. V. 



Solution of ammonia sulphate of copper. Pour into a 

 solution of blue vitriol as much subcarbonate of ammonia-water 

 as is necessary, first to precipitate the oxide of copper, and then 

 to redissolve it again; add to the liquor its own weight of 

 alcohol, to throw down the crystals of the ammonia sulphate ; 

 dry, and dissolve in water. Used as a test-liquor for arsenic. 



Blue eye-water, Aqua sapphirina, Aqua cupri ammoniati, 

 P. L. Lime-water lb. j, sal ammoniac 5] ; mix, and let them 

 stand upon a small piece of clean copper till they acquire a fine 

 blue colour. 



LiauoR CUPRI ammoniati. Cuprum ammoniatum 3j, water 

 lb. j ; dissolve and filter. 



Aqua cupri ammoniati, P. D. Lime-water 3viij, sal ammo- 

 niac 3ij, verdigris gr. iiij ; digest for a day, and pour off the 

 clear; a slight stimulant and escharotic ; used to ulcers, and 

 diluted to remove specks on the cornea, also as a show-liquor in 

 chemists' windows. 



French verdigris. Distilled verdigris. Acetate of copper, 

 JErugo crystallisata, Crysfalli Veneris. Dissolve verdigris in 

 distilled vinegar, and crystallize ; Jss daily to a glandered horse 

 produced no visible effect or inconvenience. From France, 



