Liquors arc aqueous solutions of non-volatile substances. (Cf. Aquae.) They may be made by simple solution of the substance in hot or cold water, or by chemical action.

Prepare the official Liquor Potassii Arsenitis (Fowler's Solution) as follows: Boil 1 Gm. arsenic trioxide and 2 Gm. potassium bicarbonate with 10 Gm. distilled water, in a tared flask, until solution is complete; then add enough distilled water to make the solution weigh 97 Gm.; then add 3 Gm. compound tincture of lavender, and filter through paper.

Qualities of your preparation:

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Examine shelf samples of the following official Liquors:

Sample

Color

Odor

Taste

Utility

Liquor Calcis = 0.17% Ca(OH)2

Antacid; 15 mils

L. Cresolis Comp.

Antiseptic

L. Ferri Chloridi = 12.5% sol. FeCl3

For making the tincture

L. Formaldehydi = 37% solution

Cautiously

Do not

Germicide. Tissue preservative

L. Hydrogenii Diox. = 3% sol. H2O2

Oxidizing disinfectant

Official Liquors (continued):

Sample

Color

Odor

Taste

Utility

L. Hypophysis

Smooth muscle stimulant

L. Iodi Compositus (Lugol's sol.)

Do not

Germicide and disinfectant

L. Magnesii Citratis

Aperient; 350 mils

L. Plumb. Subacet. Dil.

Protective

L. Potassii Arsenitis

St. Vitus' Dance, 0.1 mil

L. Potassii Citratis

Acidosis

L. Potassii Hydroxidi = 4.5% KOH

Do not

Caustic

L. Sodii Chloridi Physiologi-cus = 0.85 % sol. NaCl

Vehicle for intravenous injection

Other official Liquors (these are relatively unimportant): Liquor Acidi Arsenosi, L. Ammonii Acetatis (Spirit of Mindererus), L. Arseni et Hydrargyri Iodidi (Donovan's Solution), L. Ferri et Ammonii Acetatis (Basham's Mixture), L. Ferri Sub-sulphatis (Monsell's Solution), L. Sodae Chlorinatae (Labarraque's Solution), L. Ferri Tersulphatis, L. Sodii Arsenatis, L. Sodii Glycerophosphatis, L. Sodii Hydroxidi, L. Zinci Chloridi.