430 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Chemical  analyses— Continued. 
Picrolite,  Clarke  (F.  W.),  1. 
Picrolite,  Pratt  and  Lewis,  1. 
Picrotitanite,  Whitaker,  1. 
Piedmontite,  Clarke    (F.   W.),   1. 
Pirssonite,  Pratt,  .".. 
Pisanite,  Clarke   (F.  W.),  1. 
Pisanite,  Scballer,  1,  3,  8. 
Plagioelase  basalt,  Johnson  (D.  W.),  6. 
Plaster,  Parsons,  1. 
Pleonaste,  Clarke   (F.  \Y.),  1. 
Plumasite,  Lawson  (A.  C),  8. 
Plumbojarosite,  Clarke   (F.  W.),  1. 
Plumbojarosite,    Hillebrand    and    Pen- 
field,  1. 
Pollueite,  Clarke  and  Steiger,   1. 
Pollucite,  Wells,  2. 
Polydymite.  Clarke   (F.  W.),  1. 
Porphyry,  dishing,  10. 
Porphyry,   Gallaher,    1. 
Porphyry,  Lindgren,  29. 
Portland  cement,  Bain,   15. 
Portland  cement,  Eckel,  4,  17,  25,  34. 
Portland  cement,  Fall,  1. 
Portland  cement,  Meade,  1. 
Portland  cement,  Russell,  6. 
Portland  cement,  Tan".  5. 
Powellite,  Clarke  (F.  W.),  1. 
Prehnite,  Clarke  (F.  W.),  1. 
Prehnite,  Clarke  and  Steiger,  1. 
Prehnite.  Eyerman,  1. 
Prehnite.  Schaller,  8. 
Prochlorite,  Clarke   (F.  W.),  1. 
Prochlorite,  Eyerman,  1. 
Prochlorite,  Pratt  and  Lewis,  1. 
Prosopite.  Clarke  (F.  \\\),  1. 
Protovermiculite,  Clarke   (F.   W.),   '■ 
Pseudo  diorite,  Julien,  7. 
Pseudo-serpentine,  Clarke  (F.  W.),  5. 
Psilomelane,  Clarke  (F.  W.),  1. 
Ptilolite,  Clarke  I  F.  W.),  1. 
Pulaskite,  Adams  (  F.  D.>,  7. 
Pulaskite,  Brock,  3. 
Pulaskite,  Cross    <  W.  I .  6. 
Pulaskite,  Daly.  7. 
Pulaskite,  Dresser,  9,  11. 
Pulaskite.  Washington,  1,  2. 
Pulaskose,  Pirsson,  4. 
Pumice.  Bei  geat,  3. 
Pumice,  Diller.  7. 
Pnrpurite.  Graton  and  Schaller,  1. 
Pyrite,  Eckel,  16. 
P.vrite,  Stokes,  1. 
Pyrite,  Winchell   (II.  V.),  2. 
Pyrope,  Clarke   i  F.  W.),  1. 
Pyrophyllite,  Clarke   (F.  W.),  1. 
Pyrophyllite.   Clarke  and  Steiger,   1. 
Pyroxene,   Clarke    (F.   W.),   1. 
Pyroxene,  Osann,  2. 
Pyroxene,  Pbalen,  1. 
Pyroxene,  Pirsson,  4. 
Pyroxene,  Turner,  4. 
Pyroxene.  Winchell   (A.  N.),  ■".. 
Pyroxene-andesiie.  Cross  and   Howe,  1. 
Pyroxene  andesite.  Watson   (T.  L.).  G. 
Pyroxene-syenite,  Cross   (W.),  6. 
Pyroxenite,  Bascom,  3. 
Chemical  analyses— Continued. 
Pyroxenite,  Turner.  2. 
Pyroxenite,  Washington,  1. 
Pyroxenite   (websterite),  Bascom,  1. 
Pyrrhotite,  Dickson,  4. 
Pyrrhotite,  Hoffmann,  G. 
Quartz  augite  syenite,  Cushing,  3. 
Quartz  basalt,  Calkins,  1. 
Quartz-biotite-diorite,  Osmont,  1. 
Quartz-biotite-hornbleude-gabbro,  Bas- 
com, 1. 
Quartz-feldspar-porphyry,   Iddings.   3. 
Quart/,  diorite,   Jaggar  and    Palache,   1. 
Quartz-diorite-porphyry,  Barrell,  1. 
Quartzite,  Bascom.  3. 
Quartzite,  Watson  (T.  L.),  9. 
Quartz-latite,  Cross  and  Howe,  1. 
Quartz-mica  diorite,  Kansome,  G. 
Quartz-monzonite,  Bascom,  3. 
Quartz-monzonite,  Cross  and  Howe,  1. 
Quartz-monzonite,  Daly,  7. 
Quartz-monzonite,   Lindgren,   21. 
Quartz  monzonite,  Phalen,  1. 
Quartz  monzonite,  Kansome,  <>. 
Quartz-monzonite,  Weed,  5. 
Quarl  z  monzonite  -porphyry,  Lindgren, 
2S,  29. 
Quartz  porphyry,  Bayley,  1. 
Quartz-porphyry,  Le  Koy,  1. 
Quartz-porphyry,  Perry,  1. 
Quartz-porphyry,  Watson  (T.  L.),  14. 
Quartz  pseudomorph,  Schaller,  3. 
Quarl  z  pyroxenite  diorite,    Lindgren,    1. 
Quartz  sericite-schist,  Daly,  7. 
Quartz  syenite  porphyry,  Cross  (W.), 
C. 
Quartz-syenite-porphyry,  Cross  and 
Howe,  1. 
Quartz  syenite  porphyry,  Cushing,  3. 
Quartz-syenite-porphyry,  Le  Koy,  1. 
Ralstonite,  Boggild,  .">. 
Kamosile,  Lmpier.  .''». 
Kanite,  Barlow,  4. 
Reddingite,  Brush  and  Dana,  2. 
Redingtonite,  Clarke  (F.  W.),  1. 
Rhodochrosite,  BOggild,  5. 
Rhodolite,  Pratt  and  Lewis,  1. 
Rhodonite,  Richardson  (C.  II.),  2. 
Rhyolite,  Calkins,  1. 
Rhyolite,  Cross  and  Howe,  1. 
Rhyolite,  1  >uryee,  1. 
Rhyolite,  Fairbanks,  7. 
Rhyolite,  Farrington,  13. 
Rhyolite,  Lindgren  and  Drake,  2. 
Rhyolite,  Ordonez,  1. 
Rhyolite,  Kansome,  11. 
Rhyolite,  Reid  (J.  A.),  1. 
Rhyolite,  Russell,  13. 
Rhyoljte,  Spurr,  2,  29. 
Rhyolite,  Watson  (T.  L.),  14. 
Rhyolite,  Weidman,  5. 
Rhyolitic  tuff,  Calkins.  1. 
Rickardite,  Ford  I  W.  E.),  2. 
Riebeckite   (  ?),  Clark  and  Steiger,  1. 
Riebeckite,  Wrighl   I  F.  E.i.  3. 
Riebeckite  trachyte,  Cross  (W.),  6. 
Rinkite,  Boggild,  5. 
