INDEX 



173 



Thompson shaft, 120. 



Ticonderoga, 44. 



Titaniferous magnetites, 137-49; 



commercial value, 147. 

 Titanite, 22, 37, 43, 47, 50, 51, 122; 



occurrence, 161. 

 Titanium, 136. 

 Tourmalin, 2.2. 

 Trachyte, 94. 



Trachyte dike, 74. v 



Trap dikes, 14. 

 Treadway quarry, 151. 

 Trenton limestone, 73-74, 91, 151. 

 Trinucleus concentricus, 74. 

 Tryan, John, mentioned, 141. 

 Tryan pit, 148. 

 Tunnel mountain, 147, 148. 

 Tunnel mountain mines, 141-43. 



Ulrich, E. O., mentioned, 66; 

 cited, 68, 72. 



Vanadium, 147. 

 Van Hise, C. R., cited, 165. 

 van Ingen, G., cited, 64, 165. 

 Verd-antique, 23, 151. 



Wadhams Mills, 11. 

 Walker brook, 59. 

 Washington, cited, 32. 

 Watertown limestone, ^2. 

 Watson, W. C, cited, 10, 135, 144, 

 165. 



Welch ore body, no, 112. 



Wernerite, occurrence, 161. 



Westcott quarry, 84. 



Weston bed, 137. 



Westport, II, 14, 27, 62, 64, 65, 66, 

 68, 71, 1Z, 74, 75, 84, 89, 90, 95, 

 151- 



White, T. G., cited, 165. 



Whiteface, altitude, 12. 



Whiteface type, 35. 



Wichmann, A., cited, 2>'2. 



Willsboro quadrangle, 84. 



Winchell, N. H., cited, 'jz. 



Witherbee, 11. 



Witherbee, Sherman & Co., 105, 

 120. 



Wollastonite, 84; occurrence, 161. 



Woods hill, 84, 150. 



Woodworth, J. B., cited, 93, 96, 

 i6s. 



Woolen Mill, Z7, 39- 



Woolen Mill type, areal distribu- 

 tion, 87. 



Wright, F. E., cited, 130; test of 

 rocks associated with the mag- 

 netites, 131. 



Wright, G. F., cited, 165. 



Young bay, 65. 



Zircon, 26, 27, 47, 50, 51, 52, 122, 

 123, 125; occurrence, 162. 



Zygospira acutirostris, 69. 

 recurvirostris, 'j'Z- 



