432 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Chemical  analyses— Continued. 
Tetradymite,  Hillebrand,  6. 
Tetrahedrite,  Chester,  1. 
Thaumasite,  Penfield  and  Pratt,  1. 
Thalenite,  Hillebrand,  G. 
Thenardite,  Boggild,  5. 
Theralite,  Adams  (F.  D.),  7. 
Theralite,  Osann,  2. 
Theralite.  Washington,  1. 
Thoinsenolite,  Boggild,  5. 
Thomsonite,  Clarke   (F.  W.),  1. 
Thomsonite,  Clarke  and  Steiger,  1. 
Thomsonite,  Steiger,  2. 
Thorogummite,  Simonds,  3. 
Tin  ore,  Collier,  8. 
Tinguaite,  Dresser,  11. 
Tinguaite,  Kemp.  32. 
Tinguaite,  Pirsson,  4. 
Tinguaite,  Sears,  1. 
Tinguaite.  Washington.  1. 
Tinguaite  var.,  solvsbergite,  Dresser,  9. 
Tinguaite-porphyry,  Pirsson,  4. 
Titanite,  Clarke   (F.  W.  i.  1. 
Titano-magnetite,  Lindgren,  9. 
Tonopah  rhyolite-dacite,  Nevada,  Spurr, 
29. 
Topaz,  Clarke  (F.  W.),  1. 
Toseanose,  Pirsson,   1. 
Toscanose    (grano-diorite),    Cross    and 
others,  l. 
Tourmaline,  Boggild,  5. 
Tourmaline,  Clarke  (F.  W.).  1. 
Tourmaline,  Eyerman,  1. 
Trachiphyro-borolanose,  Pirsson,  4. 
Traehiphyro-pulasknse.    Pirsson,  4. 
Trachydolerite.  .1  agger  and  Palache,   1. 
Trachyte,  Breed,  1. 
Trachyte,  Cross    (W.i.  <;. 
Trachyte  obsidian.  Cross   (W.),  6. 
Trap,  Weed,  18. 
Tremolite,  Blasdale,  1. 
Tremolite,  Boggild,  5. 
Tremolite,  Clarke  (F.  W.),  1. 
Tremolite,  Peck.  6. 
Triplite,  Clarke  (F.  W.),  1. 
Triploidite.  Brush  and  Dana,  1. 
Troctolite,  Pratt  and  Lewis,  1. 
Tscheffkinite,  Clarke  (F.  W.),  1. 
Tufa,  Weed,  13. 
Tuff,  Diller,  12. 
Tuff.  Shedd,  2. 
Turquoise.  Clarke  (F.  W.),  1. 
Turquoise,    Johnson    (D.    W.),   6. 
Tychite,  Penfield  and  Jamieson,  1. 
Tyrol ite,  Clarke  (F.  W.),  1. 
Tysonite,  Allen  and  Comstock,  1. 
Tysonite,  Clarke  (F.  W.).  1. 
Ulexite,  Clarke  (F.  W.),  1. 
Umptekite,  Adams  (F.  D.),  7. 
Umptekite,  Dresser,  9. 
Umptekite,  Sears,  1. 
Umptekose,  Pirsson,  4. 
Uralite,  Weidman,  2. 
Uraninite,  Clarke  (F.  W.),  1. 
Uranophane,  Watson  (T.  L.),  7. 
Urao,  Clarke  (F.  W.),  1. 
Vermiculite,  Clarke  (F.  W.),  L 
Chemical  analyses— Continued. 
Vesuvianite,  Clarke  (F.  W.),  1. 
Vesuvianite,  Clarke  and  Steiger,  2. 
Vesuvianite,  Kunz,  5. 
Vesuvianite,  Sears,  1. 
Vesuvianite,  Turner,  4. 
Vesuvose  -  albanose     (leucitite),     Cn 
and  others,  3. 
Villarsite,  Pratt  and  Lewis,  1. 
Volcanic  ash,  Flett,  1. 
Volcanic  ash,  Gillot,  1. 
Volcanic  ash,  Hovey,  9. 
Volcanic  ash,  Lacroix,  2,  3. 
Volcanic  ash,  Lohley,  1. 
Volcanic  ash,  Itowe,  1. 
Volcanic  dust,  Bridgford,  1. 
Volcanic  dust,  Diller,  7. 
Volcanic  dust,  Diller  and  Steiger,  1, 
Volcanic  dust,  Griffiths,  1. 
Volcanic  dust,  Hillebrand.  1. 
Volcanic  dust,  Teall,  1. 
Volcanic  sand,  Diller,  7. 
Waluewite,  Clarke  (F.  W.).  1. 
Warrenite,  Clarke  (F.  W.),  1. 
Warwickite,  Clarke  (F.  W.),  1. 
Water,  Babcock  and  Minor,  1. 
Water,  Bayley,  2. 
Water,  Blake   (W.  P.),  4. 
Water,  Boutwell,  7. 
Water,  Cooper  (W.  F.),  1,  2. 
Water,  Crosby,  9. 
Water,  Crosby  and  La  Forge,  1. 
Water.  Dart  on.  18. 
Water,  Eckel,  26. 
Water,  Eisele,  1. 
Water,  Fuller  (M.  L.»,  13,  18. 
Water,  Gallaher,  1. 
Water,  Gould,  14. 
Water,  Gregory  (H.  E.),  2. 
Water,  Hall   (C.  W.),  8. 
Water,  Harris,  8. 
Water,  Garwood,  1. 
Water,  Headden,  3. 
Water,  Hoffmann,  6 
Water,  Keyes,  49. 
Water,  Kirchoffer,  1. 
Water,  Lee  (W.  T.),  9. 
Water,  Lindgren,  28. 
Water,  Logan,  2. 
Water,  Logan  and  Perkins,  1. 
Water,  McCallie,  8. 
Water,  Perkins,  8. 
Water,  Park  and  Lyman,  1. 
Water,  Peter,  1. 
Water,  Purdue,  5. 
Water,  Richardson   (G.  B.),  4„ 
Water,  Russell,  8. 
Water,  Smith  (E.  A.),  5. 
Water,  Smith  (W.  S.  T.),  4. 
Water,  Shepard,  2,  4. 
Water,  Tarr,  8. 
Water,  Taylor  (F.  B.),  5. 
Water,  Weed,  13. 
Water,  Weeks,  11. 
Water,  Weidman,  5 
Water   (of  streams),  Headden,  2. 
Webster  ite,  Leonard,  1. 
