INDEX 



173 



Thompson shaft, 120. 



Ticonderoga, 44. 



Titaniferous magnetites, 137-49; 



commercial value, 147. 

 Titanite, 22, Z7, 43, 47, 50, 51, 122; 



occurrence, 161. 

 Titanium, 136. 



Tourmalin, 22. ."'■', 



Trachyte, 94. 



Trachyte dike, 74. y 



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, 6^, 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, 72. 

 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, 7Z> 74, 75, 84, 89, 90, 95, 



151. 

 White, T. G., cited, 165. 

 Whiteface, altitude, 12. 

 Whiteface type, 35. 

 Wichmann, A., cited, z^. 

 Willsboro quadrangle, 84. 

 Winchell, N. H., cited, yz- 

 Witherbee, 11. 

 Witherbee, Sherman & Co., 105, 



120. 

 Wollastonite, 84; occurrence, 161. 

 Woods hill, 84, 150. 

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



165. 



Woolen Mill, 37, 39. 



Woolen Mill type, areal distribu- 

 tion, 87. 



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

 rocks associated with the mag- 

 netites, 131. 



Wright, G. P., cited, 165. 



Young bay, 65. 



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

 123, 125; occurrence, 162. 



Zygospira acutirostris, 69. 

 recurvirostris, y2>- 



