202 INDEX* 



Tunbridge Wells, hints on a mode of procuring soft water at, 



xiv. 345 

 Tungsten, on some new compounds of, xii. 171 

 - experiments on its combinations, xx. 177 



Tungstic acid, how detected, v. 123 

 Tunja province, notice of, iii. 338 

 Tupuquen (Capuchin mission of), notice of, ix. 10 

 Turf, gas obtained from, vi. 157 

 Turmeric paper, action of salts on, xiv. 234 

 Turnips, prevention of the fly in, v. 357. viii. 155 



beneficial effects of salt, in the culture of, x. 58 



preservation of, xv. 161 



Turpentine (oil of), rendered palatable, xlii. 441 



- — • succinic acid discovered in, xv. 161 



TuRRELL*s menstruum for etching steel plates, xviii. 175 



Tutenag, analysis of, xiv. 232 



Tyrant Shrikes of America, observations on, xx. 267 



Ulmin (artificial), viii. 392 



gallic acid converted into, by oxygen gas, xix. 353 



Ultramarine, adulteration of, xvi. 167 



Unio GigaSf a new species of fresh-water shell, description of, 



xvii. 15 

 United States of America, philosophical and literary intelligence 



from, i. 137, 300 

 Univalves, remarks on, xvii. 272 



Universelle Historial Bibliotheque, bibliographical notice of, xiii. 39 

 Universities of Germany, notice of, viii. 188 ; and of Sweden, 189 ' 

 ■ of Rome, ix. 21 1. Of Oxford and Cambridge, present 



state of, 428 

 Upas poison, active principle of, xviii. 176 

 Upata (a Capuchin mission in Guayana), described, viii. 269. 



State of the plantations in its vicinity, 271. ix, 12 

 Uranite, analysis of, xv. 16S 



