FOR    THE    YEARS    1901-1905,  INCLUSIVE. 
537 
Geologic  formations  described — Continued. 
Shawangunk  conglomerate,  Silurian, 
New  Jersey,  Weller,  6. 
Shawangunk  grit  and  conglomerate, 
Silurian,  New  York,  Hartnagel,  2. 
Shell  Bluff  group,  Tertiary,  Georgia, 
Maury,  1. 
Shell  Bluff  group,  Tertiary,  Florida, 
Pall.    s. 
Shenandoah  limestone,  Cambro-Ordo- 
vician,  Virginia,  Watson   (T.  L.),  17. 
Shenandoah  limestone,  Ordovician,  Vir- 
ginia, Bassler,  4. 
Shenango  sandstone,  Carboniferous, 
Pennsylvania,  Stevenson   (J.  J.),  4. 
Sheppard  quartzite,  Algonkian,  Mon- 
tana, Willis,  6. 
Sherburne  flags,  Pevonian,  New  York, 
Clarke  and  Luther,  3. 
Sherburne  sandstone,  Pevonic,  New 
York,    Clarke,    20. 
Sheridan  (Equus)  beds,  Pleistocene, 
Texas,  Gidley,  4. 
Sherwood  limestone,  Cambrian,  Vir- 
ginia, Campbell   (H.  P.),  1. 
Shiloh  marl,  Tertiary,  New  Jersey, 
Kiimmel  and  Knapp,  1. 
Shinier  gypsum,  Permian,  Oklahoma. 
Gould,  9. 
Shimer  gypsum  member,  Carboniferous 
(Permian),  Oklahoma,  Gould,  14. 
Shinarump,  Triassic,  Arizona,  Ward,  1. 
Shinnrump  conglomerate,  Utah,  Hunt 
ington   and    Goldthwait,    1. 
Shinarump,  Utah,  Huntington  and 
Goldthwait,  2. 
Shinarump  formation,  Triassic,  Ari- 
zona,  Ward    (L.   F.),  5. 
Shumla  sandstone,  Pevonic,  New  York, 
Clarke,  20. 
Sierran,  Ilershey,  8. 
Siestan  formation.  California,  Lawson 
and  Palache,  1. 
Silo  sandstone,  Cretaceous,  Indian  Ter- 
ritory. Taff,  3.  G. 
Silver  Creek  shale,  Pevonian,  New 
York,  Clarke,  19. 
Silver  Creek  limestone,  Pevonian,  In- 
diana, Siebenthal,  -. 
Silver  Creek  hydraulic  limestone,  in- 
cluded in  Hamilton,  Pevonian,  In- 
diana, Newsom,  3. 
Silver  Creek  hydraulic  limestone,  Pe- 
vonian, Indiana,  Hopkins  (T.  C),  11. 
Silverton  series,  Colorado,  Purington,  3. 
Silverton  series,  Colorado,  Cross  (W.), 
1. 
Silverton  volcanic  series,  Colorado, 
Cross  and  Howe,  1. 
Simpson  formation,  Ordovician,  Indian 
Territory,  Taff,  3,  6,  13. 
Sioux  quartzite,  Algonkian,  South  Oa- 
kota,  Todd   (J.  E.),  9-11. 
Sioux  quartzite,  Algonkian,  South  Pa- 
kota,  Todd  and  Hall,  1. 
Siyeh  limestone,  Algonkian,  Montana, 
Willis,  6. 
Geologic  formations  described — Continued. 
Ska.iit  formation.  Upper  Silurian. 
Alaska,  Schrader,  1,  3. 
Skaneateles  shale,  Pevonic,  New  York, 
Clarke,  20. 
Skaneateles  shale,  Pevonian,  New  York, 
Clarke  and  Luther,  1,  3. 
Skunnemunk  conglomerate,  Pevonian, 
New  Jersey,  Kiimmel  and  Weller,  2. 
Skunnemunk  conglomerate,  Pevonian, 
New  Jersey,   Weller,   6. 
Slocan  series,  British  Columbia,  Cor- 
less,  2. 
Smith  or  Peep  River  beds,  Miocene, 
Montana,  Pouglass,  1. 
Snowbank  granite,  Algonkian,  Minne- 
sota, Clements,  3. 
Snowbird  formation,  Cambrian,  North 
Carolina  and  Tennessee,  Keith,  9,  11. 
Snyder  Creek  shales,  Pevonian,  Mis- 
souri, Gallaher,  1. 
Soledad  division,  Pliocene,  Tertiary, 
California,   Hershey,   10. 
Solitude  granite,  pre-Cambrian,  Ari- 
zona, Ransome,  6,  13. 
Somerville  formation,  Carboniferous, 
Indiana,  Fuller  and  Ashley,  1. 
Somerville  formation.  Carboniferous, 
Indiana,  Fuller  and  Clapp,  2. 
Sonoma  tuff,  Tertiary,  California,  Os- 
mont,  1. 
Soudan  formation,  Archean,  Minne- 
sota, Clements,  3. 
South  Bosque  marl,  Cretaceous,  Texas, 
Prather,  2. 
Spearfish  formation,  Triassic,  Black 
Hills,  Parton,  1,  8. 
Spearfish,  South  Pakota,  Richardson 
(G.  B.),  2. 
Spearfish  sandstone,  Triassic?,  Wyo- 
ming, Smith   (W.  S.  T. ),  1. 
Spearfish  formation,  Triassic?,  Black 
Hills  region  and  Wyoming,  Parton, 
16,  18. 
Spearfish  formation,  Triassic?,  Wyo- 
ming and  South  Pakota,  Parton,  14. 
Spearfish  shale,  Triassic?,  South  Pa- 
kota, Parton  and  Smith,  1. 
Spearfish  formation.  Triassic?,  Wyo- 
ming and  South  Pakota,  Parton,  26. 
Spearfish  formation,  Triassic?,  Wyo- 
ming and  South  Pakota,  Parton  and 
OTIarra,  1. 
Spergen  limestone,  Mississippian,  Mis- 
sissippi Valley,  Ulrich,  8. 
Spring  Creek  limestone,  Carboniferous, 
Arkansas,  Ulrich,  5. 
Springfield  limestone,  Silurian,  Ohio, 
Prosser,  10. 
Springvale  beds,  included  in  St.  Louis, 
Carboniferous,  Iowa,  Udden,  5. 
Springvale  beds,  included  in  St.  Louis, 
Mississippian  series,  Iowa,  Savage,  2. 
Squaw  sandstone,  Pevonian,  West  Vir- 
ginia, Stevenson  (J.  J.),  4. 
Stafford  limestone,  Pevonian,  New 
York,  Clarke,  2. 
