GENERAL INDEX. 



Tonk . 



Torbernite 



Tourmaline in pegmatite 



Trade in Indian mica 



Trichinopoly 



Triplite 



True veins 



Tschermak 



Twinning 



Underground work 

 United States, mica in 



,, production of 



,, tariff on mica 



" Unmanufactured " mica . 

 Uraninite in pegmatite 

 Uranium ochre . 



Uses of mica . . . 



Vajra 



Veins, contemporaneous 



„ true 

 Ventilation of mica- mines 

 Vitrium Muscoviticum 

 Vizagapatam . 

 Vredenburg, E. 



u 



V 



w 



32 : 



PAGE. 



71 



32 



51.63 



95 



67 

 32. 5« 



33 

 17.25 



21 



.78-82 



32. 43 

 90, 94 

 89 

 89 

 3I.5I 

 32 

 72 



«3 

 33 

 33 

 80 

 72 

 67 

 7i 



Waddell, L. A. 

 Wainad . 

 Walker, T. L. . 

 Warth, H. 

 Waste-mica, use of 

 Water in igneous magmas 

 Williams, G. H. 

 Window-panes . . 



Xenoliths in " dome-gneiss" 



• • 



X 



■ 14. 53. 113 

 . • 65 

 18, 19,20,59 



59.«i3 

 74 

 34 

 30 



72 



47 



