540 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Geologic  formations  described — Continued. 
Trinity     division,     Cretaceous,     Texas, 
Hill  (R.  T.),  3. 
Trinity     sand,     Cretaceous,     Arkansas, 
Taff,  5. 
Trinity    sandstone,    Cretaceous,    Indian 
Territory,  Taff,  3.  6. 
Truckee  formation,  Nevada,  Spun*,  6. 
Truckee  beds,  Nevada,  Louderbaek,  4. 
Tulare  formation,  Tertiary,  California, 
Anderson,  7. 
Tularosa  formation,  New  Mexico,  Her- 
rick  (C.  L.),  6. 
Tule    Spring    limestone,    Carboniferous, 
Arizona,  Lindgren,  28,  29. 
Tullahoma     formation,     Carboniferous, 
Tennessee,  Hayes  and  Ulrich,  1. 
Tullahoma      formation.      Carboniferous 
(Mississippian),  Illinois,  Bain,  19. 
.Tullahoma     formation,     Mississippian, 
Mississippi  Valley,  Ulrich,  8. 
Tully  limestone,   Devonian,  New  York, 
Claypole,  5. 
Tully   limestone,   Devonian,   New   York, 
Loomis,  4. 
Tully  limestone,   Devonian,  New  York, 
Schneider,  1. 
Tully    limestone,    Devonic,    New    York, 
Clarke,  20. 
Tully   limestone,   Devonian.    New    York. 
Clarke  and  Luther,  1,  3. 
Turnley   hornstones    (Spokane  shale?), 
Algonkian,  Montana,  Weed,  5. 
Tuscaloosa  formation,  Cretaceous,  Ala- 
bama, Smith    (E.  A.),  2. 
Tuscan   tuff,   California,   Anderson    (F. 
M.),   2. 
Tuscarora    formation,    Silurian,    Mary- 
land, Prosser,  3. 
Tuscumbia,     Carboniferous,     Alabama, 
Stevenson  (J.  J.),  4. 
Twelvemile  beds,  Tertiary.  Alaska,  Col- 
lier, 2. 
Tymochtee  member  (?),  Silurian,  Ohio, 
Prosser,  10. 
Tyner    formation.     Ordoviciau,     Indian 
Territory,  Taff,  17. 
Tyrone     beds,     Ordoviciau.     Kentucky, 
Miller    (A.   M.),   4. 
rffington    shale,    Carboniferous,     West 
Virginia,  White   (I.  C),  7. 
TJlsterian,   Devonic,   New  York,   Clarke, 
20. 
Unadilla     formation,     Devonian,     New 
York,  Prosser,  11. 
Uncompahgre      formation,      Algonkian, 
Colorado,  Cross   (W.),  7. 
Uncompahgre      formation,      Algonkian, 
Colorado,  Cross  and  Howe,  1,  3. 
Unicoi     formation,     Cambrian,      North 
Carolina  and  Tennessee,  Keith,  4. 
Union  shale,  Devonian,  Montana,  Weed, 
5. 
Union    formation,    Carboniferous,    Can- 
ada,  Ami,   40. 
Uniontown     sandstone.     Carboniferous. 
Maryland,  Clark  and  Martin,  0 
Geologic  formations  described — Continued. 
Unkar  formation,  Nevada,  Spurr,  6. 
Unkpapa  sandstone,  Jurassic,  Black 
Dills,  Darton,  1,  8.  16.  18. 
Unkpapa  sandstone,  Jurassic,  South 
Dakota,  Darton  and  Smith,  1. 
Ute  limestone,  Silurian,  Utah  ,and  Ne- 
vada, Berkey,  8. 
Utica,  Ordovician,  Vermont,  Perkins,  7, 
11. 
Utica  group,  Ordovician,  Ohio  and  In- 
diana,   Nickles,   3. 
Utica  shale,  Ordovician,  Canada,  Ells 
(R.   W.),  7,  8. 
Utica  formation,  Ordovician,  Canada, 
Nolan  and  Dixon,  1. 
Utica  shale,  Ordovician.  Ohio,  Prosser, 
10. 
Utica  stage,  Ordovician,  Pennsylvania, 
Collie,  3. 
Utica  formation,  Ordovician,  Indiana, 
Foerste,  11. 
Utica  formation,  Cambro-Silurian,  Can- 
ada, Corkill,  2. 
Utica  formation,  Ordovician,  Michigan, 
Russell,  23. 
Utica  formation,  Ordovician,  New  York, 
Cushing,  9,  10. 
Utica  shale,  Ordovician,  Canada,  Adams 
and  Le  Roy,  1. 
Utica  shale,  Ordovician,  Canada,  Ells 
(R.   W.),   20. 
Uvalde  formation,  Neocene,  Tertiary, 
Texas,  Hill  and  Vaughan,  1. 
Valdes  series,  Silurian?,  Alaska, 
Schrader  and  Spencer,  1. 
Valdez  formation,  Silurian,  Alaska, 
Mendenhall,  8. 
Vallecito  conglomerate,  Algonkian, 
Colorado,  Cross  and  Howe,  3. 
Vallenar  series,  Upper  Paleozoic?, 
Alaska,    Brooks,   4. 
Vancouver  series,  Triassic,  Canada, 
Haycock,  3. 
Vancouver  scries,  Triassic,  Canada, 
Webster,  1. 
Vancouver  series,  Triassic  and  Jurassic. 
Alaska,  Emerson   (B.  K.),  6. 
Van  Horn  formation,  Cambrian,  Texas, 
Richardson   (G.  B. ) .  4. 
Vanport  limestone.  Carboniferous, 
West  Virginia,  White   (I.  C),  7. 
Vanport  or  Ferriferous  limestone.  Car- 
boniferous, Maryland,  Clark  and  Mar- 
tin, 0. 
Vanport  limestone,  Carboniferous, 
Pennsylvania,  Clapp,  4. 
Vanport  limestone,  Carboniferous. 
Pennsylvania,  Stone,  8. 
Vanport  limestone,  Carboniferous. 
Pennsylvania,   Woolsey,   3. 
Vanport  limestone  lentil.  Carbonifer- 
ous, Pennsylvania,  Stone  (R.  W.),  7. 
Vanport  limestone.  Carboniferous, 
Pennsylvania,  Butts,  4,  6. 
Vaquero  sandstone,  Miocene,  Tertiary, 
California,  Haehl  and  Arnold,  1. 
