532 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Geologic  formations  described — Continued. 
Potsdam  sandstone,  Cambrian,  New 
York,  Ogilvie,  ti. 
Pottawattamie  formation,  Carbonifer- 
ous, Kansas,  Rogers,  1. 
Pottsboro  subgroup,  Cretaceous,  Texas, 
Hill   (R.  T.),  3. 
Pottsville  formation,  Carboniferous, 
Maryland,  Prosser,  3. 
Pottsville  formation,  Carboniferous, 
Maryland.  Included  in  Coal  Meas- 
ures. Includes  Sharon  sandstone, 
Sharon  coal,  Lower  Connoquenes- 
sing  sandstone,  Quakertown  coal. 
Upper  Connoquenessing  sandstone, 
Lower  Mercer  coal,  Mount  Savage 
fire-clay.  Mount  Savage  or  Upper 
Mercer  coal,  and  Home  wood  sand- 
stone, Clark  and  Martin,  5. 
Pottsville  formation,  Carboniferous. 
Maryland.  Martin  (G.  ('.  I.  1. 
Pottsville  formation  (includes  Bloom- 
ington  coal.  Mercer  group),  Carbon- 
iferous. Maryland.  White  (I).).  7.      . 
Pottsville  formation.  Carboniferous. 
Pennsylvania,  Fuller  (M.  L.),  3. 
Pottsville  formation,  Carboniferous, 
Pennsylvania,  White  and  Campbell.  1. 
Pottsville  series.  Carboniferous,  West 
Virginia,  Campbell.  ."".. 
Pottsville  beds,  Carboniferous,  New 
York,  Glenn,  1. 
Pottsville  formation,  Carboniferous, 
Ohio,  Prosser,  10. 
Pottsville  formation.  Carboniferous, 
Pennsylvania.  Fuller  and  Alden,  1. 
Pottsville  conglomerate,  Carboniferous. 
Pennsylvania  and  Ohio,  Stevenson 
i.i.   J.),  4. 
Pottsville  series,  Carboniferous,  West 
Virginia,  White  (I.  C),  7. 
Pottsville,  Carboniferous,  Appalachian 
region,  Stevenson  (J.  J.),  G. 
Pottsville,  Carboniferous,  Appalachian 
region,  White  (D.),  14. 
Pottsviile  formation,  Carboniferous, 
Pennsylvania,  Butts,  4,  (>.  7. 
Pottsville  formation,  Carboniferous. 
Pennsylvania,  Campbell  (M.  R.),  6, 
8,18. 
Pottsville  formation,  Carboniferous. 
Pennsylvania,  Richardson   (G.  B.),  3. 
Pottsville  formation,  Carboniferous, 
Maryland,  Clark  and  Martin,  6. 
Pottsville  formation,  Carboniferous, 
Maryland.  Martin,  16. 
Pottsville  formation,  Carboniferous, 
Pennsylvania,  Stone  (R.  W.),  6,  7. 
Pottsville  formation,  Carboniferous, 
(Pennsylvanian),  Pennsylvania,  Wool- 
sey,  3. 
Poughquag  quartzite,  Cambrian.  New 
York,  Eckel,  6,  30. 
Poughquag  quartzite,  Cambrian,  New 
York,  Merrill  and  others,  1. 
Poxino  shale,  Silurian,  New  York,  Ilart- 
nagel,  2. 
Geologic  formations  described — Continued. 
Poxino  Island  shale,  Silurian,  New  Jer- 
sey, Weller,  6. 
Prattsburg  sandstone,  Devonic,  New 
York,  Clarke,  20. 
Prattsburg  sandstone  and  shale,  De- 
vonian, New  York,  Clarke  and  Lu- 
ther, 1. 
Prattsburg  shale,  Devonian,  New  York, 
Clarke  and  Luther,  2, 
Pre-Kansan  drift,  Quaternary,  Iowa, 
Savage,  3. 
Pre-Kansan  or  Albertan,  Pleistocene, 
Iowa,  Beyer  and  Williams,  2. 
Pre-Kansan  stage,  Pleistocene,  Iowa, 
Maebride,  4. 
Pre-Kansan  stage,  Pleistocene,  Iowa, 
Savage,  7,  8. 
Pre-Kansan  stage,  Pleistocene,  Iowa, 
Udden  (Jon  A.),  1. 
Presidio  beds,  Cretaceous,  Texas,  Ud- 
den  ( Johan  A. ),  11. 
Preston  beds,  Cretaceous,  Texas,  Hill 
(R.  T.),  3. 
Princeton  conglomerate,  Carboniferous, 
Wesl  Virginia,  Campbell  (M.  R.),  5. 
Princeton  limestone,  Carboniferous, 
Kentucky,    Qlrich    and    Smith,    1. 
Procter  limestone,  Cambrian,  Missouri, 
Ball,  1. 
Procter  limestone,  Cambrian,  Missouri. 
Ball  and  Smith,  I. 
Prospect  Mountain  limestone  and 
quartzite,    Nevada,    Spurr,   6. 
Protean  of  Safford,  Carboniferous,  Ten- 
nessee,   Stevenson    (J.   J.),  4. 
Puerco  marls,  Cretaceous,  New  Mexico, 
Reagan,  1. 
Puget  formation,  Tertiary,  Washing- 
ton.  Smith    (G.  O.),  6 
Pulaski  formation,  Eocene,  Oregon, 
Diller,  4. 
Purisima  formation,  Pliocene,  Ter- 
tiary, California,  llaehl  and  Arnold, 
1. 
Putnam  Hill  limestone,  Carboniferous, 
Ohio,  Orton  and  Peppel,  1. 
Pyburn  limestone,  subdivision  of  Linden 
bed,  Devonian,  Tennessee,  Foerste,  7. 
Quadrant.  formation,  Carboniferous, 
Montana,    Weed,   5. 
Quartermaster  division,  Permian,  Okla- 
homa,  Gould,  9. 
Quatermaster  formation,  Carbonifer- 
ous (Permian),  Oklahoma,  Gould,  14. 
Quebec  formation,  Ordovician,  Canada, 
Ami,   1. 
Quinnesec  schists,  Archean,  Michigan, 
Bayley,   1. 
Quinnimont  formation,  Carboniferous, 
West  Virginia,  Campbell,  5. 
Ragged  Point  series,  West  Indies,  Spen- 
cer (J.  W.),  6. 
Raleigh  sandstone,  Carboniferous,  West 
Virginia,  Campbell   (M.  R.),  5. 
Raleigh  sandstone.  <  'arboniferous,  West 
Virginia,  White   (I.  C),  7. 
