INDEX, 



169 



Tabftsheer, account of the chemical exper- 

 iments on, t, 1:30, 14-t, 155. 

 Tea, improved melliod of making, 87. 

 Tear, analysis of a, 147. 

 Tennant, Smithson, discovery of plomb 

 gomme, 07. 

 experiments of, 5G. 

 Theory of formation of Kirkdale Cave, 



103. 



Thomson on iilmin, 47. 



Tin, capillary metallic, 74. 



Tomb of King Psammia, specimen from, 



102. 

 Topaz, experiments with, 06. 

 Toiii's of Bmithson, l:!9, 140. 

 Tungstic acid, tost of, 85. 

 Turnaol, coloring matter of, 69. 



Ulmin, substance from elm tree, 47, 130. 



Vauquelin on zeolite, 42, 40. 

 Vegetables, coloring matter of, 58. 

 Vesuvius, analysis of matter from, 89. 



saline substance from, 52, 130. 

 Violet, coloring matter of, CO. 

 Volcanoes, 53, 130. 



Watt, Gregory, on basalts, 127. 

 Wax lamps, 79. 

 Werner on minerals, 00. 

 Wicks of lamps, 78. 



Works and character of Smithson, J. R, 

 McD. Irby, 143. 



Zeolite, composition of, 42, 129, 145. 



