Langenkan—The Arsenical Solutions. 
155 
Arsenical Solution 
Solution of Arsenite of Potass. Fowler’s Solution 1 
Ingredients. 
Take of Arsenious acid, 4 in fine 
powder, 5 
Subcarbonate of potass, 6 each 
sixty-four grains, 7 
Distilled water 8 one pint, 9 
Alcohol, four fluidrachms, 11 
Directions. 
Boil them together in a glass 
vessel, until the arsenic is entirely 
dissolved. 10 . When the solution is 
cold, pour it into a pint measure, 
and add to it the alcohol and so 
much distilled water, as shall fill 
up the measure. 12 
LIQUOR POTASSAE ARSENITIS 1 U. S. P. 1830 Phila. 
Ingredients. 
R. Acidi arseniosi 4 in pulverem 
subtilissimum triti, 5 
Potassae Carbonatis Puris- 
simi, 6 singulorum, grana 
sexaginta quatuor; 7 
Aquae Destillatae 8 quantum 
satis sit; 
Spiritus Lavandulae Compo- 
siti fluidrachmas quatuor. 11 
Directions. 
Acidum Arseniosum et Potassae 
Carbonatem cum Aquae Destil¬ 
latae octario 9 coque, in vase vitreo. 
donee Acidum omnino liquetur. 10 
Liquori frigefacto adjice Spiri¬ 
tual Lavandulae, et postea Aquae 
Destillatae quantum satis sit ut 
mensuram octarii accurate im- 
pleat. 12 
Solution of Arsenite of Potassa 1 
Ingredients. 
Take of Arsenious Acid, 4 in very 
fine powder, 5 
Purest Carbonate of Potassa, 
each, 6 sixty-four grains, 7 
Distilled Water a sufficient 
quantity; 
Compound Spirit of Lavender 
four fluidrachms. 11 
Directions. 
Boil the Arsenious Acid and 
Carbonate of Potassa with a pint 9 
of Distilled Water, till the Acid is 
entirely dissolved. 10 To the solu¬ 
tion, when cold, add the Spirit of 
Lavender, and afterwards suffi¬ 
cient Distilled Water to make it fill 
up exactly the measure of a pint. 12 
