742 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Petrology— Continued. 
Rocks  described — Continued. 
Plumasite,  Lawson    (A.   C),  8. 
Porphyrite  Tuff,  Bailey  <  L.  W.),  10. 
Porphyry,  Bailey  (L.  W.),  10. 
Porphyry,  Kay,  1. 
Porphyry,  Lindgren,  29. 
Porphyry,  Tassin,  1. 
Psammites,  Van  Hise,  12. 
Psephites,  Van  Hise,  12. 
Pseudoleucite,  Smith   (W.  S.  T.),  0. 
Pseudoleucite-hasalt,  Pirsson,  4. 
Pseudoleucite-porphyry,    Smith    (W.    S. 
T.),  5. 
Pulaskite,  Adams  (F.  D.),  7. 
Pulaskite,  Brock,  3. 
Pulaskite,  Dresser,  5,  9. 
Pulaskite,   Sears,   1. 
Pulaskite,  Washington,  1. 
Pumice,  Diller,  7. 
Pumice,  Diller  and  Patton,   1. 
Pyroclastic  schist,  Farks,  1. 
Pyroxene,  Gordon   (C.  II.),  4. 
Pyroxene-andesite,  Calkins,  1. 
Pyroxene-andesite,  Cross  and   Howe,   1 
Pyroxene-andesite,    Fairbanks,    7. 
Pyroxene-andesite,   Smith  and   Calkins. 
1. 
Pyroxene-tonal ite,  Emerson   (B.  K.).  r> 
Pyroxenite,   Calkins,   1. 
Pyroxenite,   Fairbanks,   7. 
Pyroxenite,  Gordon    (C.  II.).  •">. 
Pyroxenite,  Graton,  1. 
Pyroxenite,  Kemp,  11. 
Pyroxenite,    Leonard,    1. 
Pyroxenite,  Osann,  2. 
Pyroxenite,  Pratt  and  Lewis,   1. 
Pyroxenite,  Smith  (W.  S.  T.),  5. 
Pyroxenite,  Smith  and 'Calkins.  1. 
Pyroxenite   (websterite),  Bascom,  1. 
Pyroxenite-amphibolite,       Pratt      and 
Lewis,  1. 
Quartz,  basalt.   Calkins.   1. 
Quartz-augite  diorite,  Sears,  1. 
Quartz-augite-mica-dioiitc.     Smith     and 
Calkins,   1. 
Quartz-biotite-diorite,   Osmont.    1. 
Quartz  diabase,  Emerson    ( P>.  K.),  8. 
Quartz-diorite,  Jaggar  and  Palacbe,   1. 
Quartz-diorite,  Spencer    (A.  C),  10. 
Quartz-diorite-porphyry,   Barrell,    1. 
Quartz-diorite-porphyry,  Weed,  5. 
Quartz-feldspar-porphyry,    Iddings,   3. 
Quartz-hornblende-porphyrite,      Arnold 
and  Strong,  1. 
Quartz-latite,   Cross  and   Howe,   1. 
Quartz-mica-diorite,   Barrell,   1. 
Quartz-mica-diorite,   Ransome.   0.    13. 
Quartz-mica-diorite,  Smith  and  Cnlkins, 
1. 
Quartz-monzonite,   Arnold   and    Strong, 
1. 
Quartz-monzonite,  Barrell,  1. 
Quartz-monzonite,  Cross  and  Howe,  1. 
Quartz-monzonite,  Ransome,  6,  13. 
Quartz-monzonite,  Weed,  5. 
Petrology — Continued. 
Rocks  described — Continued. 
Quartz-monzonite-porphyry,    Cross    and 
Howe,    1. 
Quartz-porphyry,   Le  Roy,   1. 
Quartz-porphyry,  Parks,   1. 
Quartz-porphyry,    Perry,    1. 
Quartz-porphyry,  Watson  (T.  L).  14. 
Quartz-pyroxene-mica-diorite,     S'mit  h 
and  Calkins,  1. 
Quartz-sericite-schist,    Daly,    7. 
Quartz-syenite-porphyry,       Cross       and 
Howe,  1. 
Quartz-zoisite  schist,  Emerson   (B.  K.), 
6. 
Quartzite,  Barlow,  G. 
Quartzite,    Barrell,    1. 
Quartzite,  Belowsky,   1. 
Quartzite,  Emerson   (B.  K.),  6. 
Quartzite,  Russell,  5. 
Quartzite,  Van  Hise,  12. 
Quartzite,  Wright   (F.  E.),  6. 
Quartzose  schist,  Parks,  1. 
Quartzose  schist,  Thelen,  1. 
Ramosite,  Luquer,  3. 
Rhyolite,  Calkins,  1. 
Rhyolite,  Cross  and  Howe,  1. 
Rhyolite,  Fairbanks,  7. 
Rhyolite,   Farrington,   13. 
Rhyolite,  Guild,   1. 
Rhyolite,  Lindgren,  4,  28. 
Rhyolite,  Ordonez,  1. 
Rhyolite,  Reid   (J.  A.),  1. 
Rhyolite,  Russell,  5. 
Rhyolite,  Smith  (D.  T.),  2. 
Rhyolite,  Spurr,  2,  3,  29. 
Rhyolite,  Weidman,  5. 
Rhyolite-porphyry,  Jaggar  and  Palacbe, 
1. 
Riebeckite,  Murgoci,  1. 
Salemite,  Sears,  1. 
Salemose,  Finlay    (G.  L),  8. 
Salemose-limburLjose,  Finlay   (G.  I.),  8. 
Sandstone,  Sears,  1. 
Sandstone,  Van  Hise,  12. 
•      Sandstone,  Wright   (F.  E.),  0. 
Saxonite,  Smith  and  Calkins,  1. 
Scapolife  amphibolite,   Graton,   1. 
Schist,  Marsters,  2,  3. 
Schist,  Parks,  1. 
Schist,  Thelen,  1. 
Schist,  Van  Hise,  12. 
Sericite,   Parks,    1. 
Sericite,  Spurr,  29. 
Serpentine,  Bascom,  1.  3. 
Serpentine,  Clarke   ( F.  W.),  5. 
Serpentine,   Dresser,  4.   10. 
Serpentine,  Calkins,  1. 
Serpentine,  Clarke  ( F.  W.),  2. 
Serpentine,  Diller,  11. 
Serpentine,   Jonas,   1. 
Serpentine,  Julien,  7. 
Serpentine,   Kraus,   1. 
Serpentine,  Leonard,   1. 
Serpentine,   Lindgren,  4. 
Serpentine,    Marsters,    2,    3. 
Serpentine,  Merrill  (G.  P.),  14. 
