﻿254 
  

  

  NEW 
  YOEK 
  STATE 
  MUSEUM 
  

  

  Tentacalite 
  fossils, 
  1579-581. 
  

   Tentaculite 
  limestones, 
  2015. 
  

   Terminal 
  moraine, 
  1766, 
  2036. 
  

   Tertiary 
  system, 
  1748-75'^; 
  life 
  of, 
  175^. 
  

   Text-books 
  on 
  geology, 
  2363-382. 
  

   Time, 
  see 
  Geologic 
  time. 
  

   Torn 
  mountain, 
  184*. 
  

   Torrey, 
  John, 
  botanist, 
  241^. 
  

   Trachyte, 
  1252. 
  

  

  Trap, 
  1399, 
  1412, 
  184*, 
  204*, 
  205^. 
  

   Travertine, 
  120"^; 
  localities 
  producing, 
  

  

  2342. 
  

   Trenolito, 
  1215. 
  

   Trenton 
  group, 
  1475-49^. 
  

   Trenton 
  limestone, 
  147^, 
  148^-49^ 
  

  

  2001-11. 
  

   Triassic 
  formation, 
  1951. 
  

   Triassic 
  system, 
  1711-722; 
  life 
  of, 
  1721. 
  

   Tuffs, 
  1255. 
  

   Tully 
  limestone, 
  1636, 
  2029-31. 
  

  

  Ulster 
  county, 
  spathic 
  iron 
  ore, 
  2219- 
  

  

  224. 
  

   Upper 
  Devonian 
  rocks, 
  1609-622. 
  

   Upper 
  Helderberg 
  limestone, 
  160^, 
  2021. 
  

   Upper 
  Silurian 
  system, 
  1381, 
  150'^-583 
  ; 
  

  

  life 
  of, 
  1582. 
  

   Utica 
  slate, 
  149*. 
  

  

  Van 
  Rensselaer, 
  Stephen, 
  patron 
  of 
  

   first 
  survey, 
  2412. 
  

  

  Vanuxem, 
  Lardner, 
  statements 
  quoted, 
  

   110*; 
  geologic 
  report, 
  2366; 
  geolo- 
  

   gist, 
  2418. 
  

  

  Vegetable 
  life, 
  1331. 
  

  

  Vinci, 
  Leonardo 
  da, 
  geologic 
  observa- 
  

   tions, 
  1141. 
  

  

  Volcanic 
  rocks, 
  124*, 
  1252. 
  

  

  Walcott, 
  CD., 
  Bulletin 
  of 
  the 
  U. 
  S. 
  

   geological 
  survey 
  no. 
  Si, 
  110^; 
  geo- 
  

   logic 
  studies, 
  1425. 
  

  

  Warsaw, 
  salt 
  wells, 
  1556. 
  

  

  Washington 
  county, 
  limestone, 
  142^; 
  

   rocks, 
  1433; 
  quartzite, 
  143*^; 
  roofing 
  

   slate, 
  1439-441; 
  Cambrian 
  forma- 
  

   tions, 
  1459. 
  

  

  Water, 
  geologic 
  changes 
  produced 
  by, 
  

   128*, 
  1792, 
  2395. 
  

  

  Waterlime, 
  1562, 
  2015. 
  

  

  Westchester 
  county, 
  Archaean 
  gneiss, 
  

   140"^; 
  calciferous 
  limestone, 
  147^; 
  

   rocks, 
  150*. 
  

  

  Xenophanes, 
  geologic 
  observations, 
  

   1137. 
  

  

  Zinc, 
  localities 
  producing, 
  2332. 
  

   Zircon, 
  1226. 
  

  

  