INDEX. 195 



Tartar (emetic) of the shops, impurity of, xix. 248 

 Tartaric acid obtained from potatoe-apples, vii. 179 



' influence of, in certain cases of analysis, xvi. 107 



Tartaro-sulphate of potash, xvii. 171 



Tartary, volcanoes of, x. 197 



Tartrates (triple) of bismuth, experiments with, vi. 158; and 



with that of potash and manganese, ib. Of lead, pyrophorus 



obtained from, xvi. 385 

 Taschium, a supposed metal, notice of, xvii. 390 

 Tassaert (M.) on the combinations of chromic acid with potash, 



XV. 310 

 Taste, organs of, how affected by different bodies, xvii. 392 

 Taylor (Messrs.), experiments and apparatus of, for procuring 



gas from oil, vi. 108. viii. 120. On the construction of the 



acetometer, 255 

 Taylor (Dr. Brook), his method of solving the problem of atmo- 

 spherical refraction, xviii. 346 

 Taylor's (John, Esq.) evidence of, with remarks, in the cause of 



Severn and Co. against the Imperial Insurance Company, x. 347 

 Taylor (Mr. T. G.), account of a coloured circle surrounding the 



zenith, xi. 40 

 Taylorian theorem, demonstration of, xvi. 229. xvii. 74 

 Tayloria Splachnoidesy a new species of moss, account of, ii. 144 

 Tea (black), analysis of, xii. 201 ; and of green tea, 202. Remarks 



thereon, 204. Table of soluble matters in, iv. 206 

 .— adulteration of, by the Chinese, detected, xviii. 166 



plant successfully reared in France, vi. 375 



shrub, at Katmandu, vii. 398 



Tears, cause of, explained, iv. 211 

 Telegraphs, celerity of, v. 356 



Telescope, notice of a large reflecting, xi. 385 

 on the indistinctness of vision caused in, by the pre- 

 sence of false lights, and remedies for it, xvii. 17 

 account of M. Guinand's glasses for, xix. 248 



Temperature, changes in, caused by local circumstances, ii. 44, 



O 2 



