FOR   THE    YEARS   1901-1905,  INCLUSIVE. 
741 
Petrology— Continued. 
Rocks  described — Continued. 
Leucite-tinguaite,  Wolff,  1. 
Leucitite,  Clarke  and  Steiger,  1. 
Lignite,  Hoffmann,  6. 
Limburgite,  Finlay   (G.   I.),  8. 
Limburgite,  Johnson  (I).  W.),  0. 
Limburgite,  Stevens  (E.  A.),  1,  2. 
Limestone,   Hobbs,   5,   6. 
Limestone,  Sears,  1. 
Limestone,  Van  Hise,  12. 
Limestone,  Wright   (P.  E.),  G. 
Limonite,  Newland,  1. 
Liparite,  Osann,  1. 
Liparite  perlite,  Emerson  (B.  K.) 
Madupite,  Clarke  and  Steiger.  1. 
Magnesite,  Newland,  1. 
Magnetite  schist,  Wright  (F.  E.), 
Malacolite,  Emerson  (B.  K.),  G. 
Marble,  Barrell,  1. 
Marble,  Emerson  (B.  K.),  6. 
Marble,  Van  Hise,  12. 
Melaphyre,    Burr,    1. 
Metadiabase,  Cross  and  Howe,  1. 
Metadiabase,    Ransome,    13. 
Metagabbro,  Bascom,  1,  3. 
Metagabbro,   Howe,  3. 
Metagabbro,  Spencer   (A.  C. ),  10. 
Metarhyolite,  Bascom,  1. 
Mica,  Osann,  2. 
Mica-andesite,  Blake  (J.  C),  1. 
Mica-andesite,  Johnson  (D.  W.),  6 
Mica-diorite,  Pratt  and  Lewis,  1. 
Mica-gneiss,  Bascom,  1,  3. 
Mica-peridotite,  Ulrich,  S. 
Mica-schist,  Bascom,  3. 
Mica-schist,  Ogilvie,  6. 
Mica-schist,  Thelen,  1. 
Microdiorite,  Barrell,  1. 
Micropegmatite,  Arnold  and  Stron 
Minette,  Barber,  1. 
Minette,  Pirsson,  1. 
Missourite,  Clarke  and  Steiger,  1. 
Missourite,  Pirsson,  4. 
Missourote,   Pirsson,  4. 
Monchiquite,   Pirsson,  4. 
Monchiquite,  Shinier,  1. 
Monchiquose,    Pirsson,   4. 
Monmonthite,  Adams  (E.  D.),  8. 
Montanose,  Pirsson,  4. 
Monzonite,  Campbell   (C.  M.),  1. 
Monzonite,  Cross  and  Spencer,  1. 
Monzonite,  Pirsson,  1,  4. 
Monzonite,   Ransome,   G. 
Monzonite-porphyry,   Jaggar  and 
che,  1. 
Monzonite-porphyry,  Smith   (W.  S 
5. 
Monzonyte,    Barber,    1. 
Monzonyte,  Merrill   (G.  P.),  9. 
Muscovite-granite,  Ransome,  13. 
Nepheline-basalt,  Stevens   (E.  A.), 
Nepheline-syenite,  Adams  (F.  D.), 
Nepheline-syenite,    Barlow,    4. 
Nepheline-syenite,    Coleman,    8. 
Nepheline-syenite,  Miller  (W.  G.), 
Nepheline-syenite,   Sears,  1. 
g,  1. 
Pala- 
T.), 
1,  7. 
Petrology— Continued. 
Rocks   described — Continued. 
Nepheline-syenite,  Smith   ( W.  S.  T.),  5. 
Nepheline-syenite-porphyry,   Smith    ( W. 
S.  T.),  6. 
Nephelite  syenite,  Finlay  (G.  I.),  8. 
Nephelite  syenite,  Kemp,  .".2. 
Nordmarkite,  Daly,  7. 
Nordmarkite,  Dresser,  5,  0. 
Nordmarkite,  Sears,  1. 
Nordmarkite-porphyry,    Daly,    7. 
Nordmarkose,   Dresser,   11. 
Norite,  Bascom,  1. 
Norite,  Leonard,  1. 
Norite,  Spencer  (A.  C),  10. 
Nosean-syenite,  Pirsson,  4. 
Oligoclase-gabbro,  Spencer  (A.  C),  10. 
Oligoclase  rock,  Kolderup.  4. 
Olivine  basalt,   Calkins,   1. 
Olivine-basalt,  Emerson    (B.  K.),  6. 
Olivine  basalt,   Johnson    (D.    W.),   6. 
Olivine-basalt,   Phalen,   2. 
Olivine-diabase,  Barlow,  G. 
Olivine-diabase     Fairbanks,   7. 
Olivine-diabase,   Palache,   3. 
Olivine-diabase,  Parks,  1. 
Olivine-diabase-porphyrite,    Palache,    3. 
Olivine-gabbro,  Pratt  and   Lewis,   1. 
Olivine-hoinblende-gabbro,     Smith     and 
Calkins,  1. 
Olivinite,  Whitaker,  1. 
Ophicalcite,  Dresser,  4. 
Ophite,  Lane,  22. 
Orendite,  Clarke  and  Steiger.  1. 
Paisanite,  Osann,  1. 
Palagonite,  Emerson  (B.  K.),  0. 
Pegmatite,  Ogilvie,  6. 
Pegmatite,  Reid  (J.  A.),  1. 
Pegmatite,  Smith   (W.  S.  T.),  5. 
Pegmatite,    Smith   and   Calkins,    1. 
Pegmatite,  Spencer  (A.  C. ) ,  10. 
Pelites,  Van  Hise,  12. 
Peridosteatite,  Pratt  and  Lewis,  1. 
Peridotite,  Bascom,  1. 
Peridotite,  Fairbanks.  7. 
Peridotite,  Kemp,  11. 
Peridotite,  Leonard,  1. 
Peridotite,  Matson,  2. 
Peridotite,  Pratt  and  Lewis,  1. 
Peridotite,  Smith  and  Calkins,  1. 
Peridotite,  Spencer   (A.  C. ) ,  10. 
Peridotite,  Wright    (F.   E.),  6. 
Peridotite  var.  picrite,  Phalen,  1. 
Peridotite-amphibolite,       Pratt       and 
Lewis,  1. 
Perknite,  Turner,  2. 
Persalane,  Finlay    (G.   I.),  8. 
Phonolite,  Clarke  and  Steiger,   1. 
Phonolite,  Smith  (W.  S.  T.),  5,  6. 
Phonolith,  Osann,  1. 
Phyllite,  Belowsky,   1. 
Phyllite,  Daly,  7. 
Phyro-biotite-cascadose,    Pirsson,    4. 
Phyro-shonkinose,  Pirsson,  4. 
Pickryte,   Emerson    ( B.   K.),   8. 
Picrotitanite,   Whitaker,   1. 
Pillow-lava,  Daly,  9. 
