xxvi INDEX. 
Hydrochloric acid, impurities in, xvii. 
222, xx. 315 
<£ " in lead colic, vii. 346 
i( i( test for potato starch, 
xv. 76 
« ether, iv. 118 
Hydrocyanic acid, ii. 156, iii. 266, 309, 
356, iv. 17, 83, 85, 
v. 173,vii. 160, viii. 
82, 161, xii. 32 
" " antidote for, xix. 223 
(i ££ a preventive of fer- 
mentation, xvii. 161 
i( (( chemico - legal re- 
searches for, ix. 236 
" « death from, xv. 237 
« ££ in sweet spirits of 
nitre, xvi. 41 
« ££ poisonous action of, 
xviii. 234 
< £ ££ " to vegetables, 
v. 262 
" <£ preparation of, i. 235, 
xiv. 297 
" ££ tests for, vii. 264, xix. 
142 
ft ££ transformation of, v. 
43 
a ether, vi. 354 
Hydrocyanoferrate of quinine, xii. 350 
Hydroferrocyanate of potassa, i. 295 
Hydrogen, antimoniuretted and arse- 
niuretted, x. 217 
« arseniuretted, xiv. 152 
«< bichloride of, xvii. 76 
tS carburetted, compounds of, 
iv. 114 
Hydrogen, new carburet of, vii. 336 
" passage of, through solid 
bodies, xxi. 173 
££ phosphuretted, v. 259 
« " hydriodate of, 
iv. 261 
Hydrographic paper, vi. 347 
Hydrometer, a simple, xvi. 318 
" common, ii. 9 
« of Baume, ii. 2S6 
Hydroselenic ether, viii. 319 
Hydrosulphate of ammonia, xiii. 93 
Hydrosulphates, i. 295 
Hydrosulphuric ether, viii. 319 
Hyoscyamus, chemical examination of, 
vii. 220 
" extract of, v. 289, xvi. 
175 
« oil of, xiii. 106 
" varieties of, xiv. 305, 307 
Hyparic acid, vi. 261 
Hyperchlorites, xi. 311 
Hypericum perforatum, viii. 23 
Hyperiodic acid, vi. 349 
Hyponitrous acid, action of sulphurous 
acid on, xiii. 83 
" ether, xii. 115, xiv. 132 
Hyposulphite of potassa, xvi. 190 
££ soda, xiii. 102, xiv. 35], 
xvii. 292 
££ soda, preparation of, 
xviii. 78, xix. 239, 
xv. 223 
Hyposulphuric acid, xvii. 201 
Hyposulphurous acid, xii. 240 
Ice, artificial, preparation of, i. 318 
Iceland moss, iii. 267 
Ichthyocolla, iii. 17, 92, vi. 12 
Ilex Paraguayensis, acid of, xxi. 70 
Ilicine, xxi. 89 
Impermeable oil casks, viii. 257 
Impregnation, vegetable, xiii. 216 
Improvement in gas manufacture, xx. 
121, 132 
< £ in making the cyanides of 
potassium and sodium, 
xviii. 277 
££ in manufacture of iron and 
steel, v. 88 
Impurities in hydrochloric acid, xvii. 
222, xx. 315 
<« medicines, and means of 
obviating them, viii. 
106 
Impurity of some drugs, xvi. 182 
India cinnamon, notice on, xxi. 296 
££ opium, xii. 138, xxi. 193 
" rubber court plaster, xv. 38 
££ ££ plasters, xviii. 235 
££ ££ vulcanization of, xix. 206 
££ senna, x. 105 
Indian corn in wheat flour, test for, xxi. 
183 
££ ££ sugar from, viii. 262 
££ hemp, resinous extract of, xv. 
157, 255, xix. 195 
« ££ tincture of, xv. 256 
££ ink, vi. 175 
Indigenous opium, xvi. 60 
Indigo, iii. 157, ix. 262 
££ action of ether on sulphate of, 
v. 264 
££ in epilepsy, viii. 86 
