330 
INDEX. 
Syrup of orange peel, ----- 96 
Sugar of gelatin, its composition, 78 
Sulphate of magnesia, its bitter taste removed by tannin, - 300 
Sulphates in aqueous solution, action of volatile oils on - 303 
Sulpho-cyanide of ammonium, method of preparing, - 142 
Tartrate of magnesia, - - 265 
Tests for balsam copaiba, - - - - - 187 
Test for anhydrous alcohol, ----- 319 
" for guaiacum in jalap resin, - 238 
11 for Prussic acid, - 142 
" for strychnia, - - - - - 76 
Thialdine and selenaldine, - 237 
Tincture of iodine, changes in - - - 54 
" of aconite, - - - - 262 
Tobacco, method of ascertaining the quantity of nicotine in 68 
Ultramarine, artificial 
Uric acid, preparation of 
Urine, detection of poisons in 
Uva ursi, analysis of 
Ursine, 
105 
80 
118 
88 
91 
Valerianic acid, experiments on 282 
Valerian, fluid extract of 83, 184 
Vanilla and its culture, - - . - 317 
Variety of cinchona bark, - - - - - 178 
Volatile oils, their action on the sulphates in solution, - 303 
Vulcanization of India rubber, ... - 206 
Winter's bark, - - - - - 161 
" " of Chili, - - - - - 81 
Wines of colchicum, - 262 
Zinc, chloride of, its anti-septic power. ... 269 
