154 THE NEW ZEALAND FAMILY HERB DOCTOR, 
Actp Crrric.—Prepared from lemor juice or the juice of 
the fruit of thecitron. Used in acidulous drinks and making 
white wine vinegar. Dose, 5to 20 grains. Safe. 6d. per oz. 
Actp Gauuic.—Prepared by boiling nut-galls with 
diluted sulphuric acid. Properties astringent. Dose, 10 to 
30 grains. Use carefully. 1s. per oz. 
Actp Hyprocyantc.—Commonly known as prussi« acid. 
It is one of the deadliest poisons known; one or two drops of 
the pure acid will kill a large dog in a few seconds. Very 
dangerous. Diluted, 1s. 6d. per oz. 
Muriatic Acto.—Commonly known as spirit of salts, 1s 
obtained by the action of sulphuric acid on common salt. 
Properties, tonic, refrigerant, and antiseptic. Dose of the 
diluted acid, 10 to 30 drops, is in the proportion of six parts 
of the pure acid to thirteen parts of distilled water. Dan- 
gerous. 2d. per oz. 
Nirerc Acr.—Is prepared from nitrate of potash or 
saltpetre, by distillation with sulphuric acid and water. 
Properties, tonic, antiseptic, and astringent. Should always 
be used in the diluted form, as it is a very fatal poison. 
Dilution, 1 of acid to 6 of water. Dose of the diluted acid, 
5 to 20 drops. Dangerous. 3d. per oz. 
Actp PuospHoric.—Prepared by distillation from phos- 
phorus and nitric acid. Generally used in the diluted 
form 1 of acid to 4 of water. Dose of the diluted acid, 10 
to 30 drops. Dangerous. 3d. per oz. 
Sarroytro Actp.—Obtained from oil of wintergreen. Used 
as a preservative against fermentation, and also forms one of 
the principal ingredients in Cura Clava or corn cure. Given 
internally in the form of salicylate of sodium, for rheumatism, 
in doses of 5 to 15 grains four or five times in the twenty-four 
hours. Use very carefully. 1s. per oz. 
Sutpauric Acrp, commonly known as vitriol, is obtained 
by burning sulphur and allowing the product of combustion 
