304 BIBLIOGRAPHY OF NORTH AMERICAN GEOLQGY, 1906-1907. 
North Mound quartzite, pre-Cambrian, Wis- 
consin : Weidman, 2512. , 
North Park formation, Tertiary, Wyoming: 
Yeatch, 2440. 
Norton formation, Carboniferous, Virginia : 
Stone, 2311. 
Nosoni formation, Carboniferous, Califor- 
nia : Piller. 721. 
Nottely quartzite. Cambrian, North Caro- 
lina : Keith, 1352. 
Nunda formation, Devonian, New York : 
Williams, 2583. 
Nunda formation, Devonian, Pennsylvania : 
Butts, 367. 
Nussbaum formation, Tertiary, Colorado : 
Darton, 648 : Fisher, 869. 
Obispo formation, Panama : Howe, 1244. 
Oconee zone, Archean, South Carolina : 
Sloan, 2218. 
Ogden quartzite, Ordovician, Utah: Em- 
mons, 708 : Weeks, 2506. 
Ogishke conglomerate, Aigonkian, Minne- 
sota : Abbott, 1. 
Ohio shale. Devonian, Kentucky : Foerste, 
883. 
Oldham limestone, Silurian, Kentucky : 
Foerste, 883, 884. 
Onaping tuff. pre-Cambrian, Ontario : Cole- 
man, 530. 546. 
Oneida conglomerate, Silurian. New York : 
Clarke, 404 ; Hartnagel, 1083. 
Oneonta beds, Devonian. New York : 
Grabau, 901. 
Oneota formation, Ordovician, Iowa : Cal- 
vin, 387, 388. 
Oneota formation, Ordovician, upper Missis- 
sippi Valley : Bain. 00. 
Oneota limestone, Ordovician, Iowa : Beyer 
and Williams, 234. 
Onondaga limestone, Devonian. New York: 
Grabau, 001 ; Luther, 1633. 
Ontario quartzite. Carboniferous, Utah : 
Jenney. 1296. 
Onwatin slate. pre-Cambrian, Ontario : 
Coleman. 539. 546. 
Orange phyllite. Connecticut : Gregory, 
1034 ; Gregory and Robinson. 1038. 
Orca series, Alaska : Brooks, 313. 
Oread limestone. Carboniferous. Kansas : 
Beede and Rogers. 181 ; Wooster. 2636. 
Oregon. Ordovician. Kentucky : Miller. 
1748. 
Oriskany, Virginia : Eckel, 765. 
Oriskany formation (Monterey), Devonian. 
Maryland : Clark and Mathews, 488. 
Oriskany formation. Devonian, New York : 
Grabau, 991; Hartnagel. 1084; Williams. 
25S3. 
Oriskany sandstone, Devonian, New York : 
Luther, 1633. 
Oriskany sandstone, Devonian, Pennsyl 
vania : Butts. 367. 
Oriskany sandstone, Devonian, West Vir- 
ginia : Grimsley, 1044. 
Osage. Mississippian. Illinois : Fenneman, 
860. 
Osage formation, Carboniferous, Iowa : 
Calvin. 387. 
Osage limestones, Mississippian, Illinois : 
Bowman and Reeds, 277. 
Osage limestone, Mississippian, Iowa: 
Beyer and Williams, 234. 
Osage shales. Carboniferous, Kansas : 
Wooster, 26M6. 
Osceola amygdaloid, Aigonkian, Michigan: 
Lane, 1500. 
Osoyoos granodiorite, Jurassic, Cascade 
Mountains : Daly, 632. 
Oswego limestone, Carboniferous, Kansas : 
Wooster, 2636. 
Otis limestone. Devonian. Iowa : Norton, 
1805. 
Ouray limestone. Devonian and Carbon- 
iferous (Mississippian), Colorado: Cross 
ci <il, 607. 
j Outer conglomerate. Aigonkian, Michigan : 
Cordon and Lane, 085. 
Outer conglomerate, Cambrian. Michigan : 
Lane and Seaman, 1518. 
Owen beds. Devonian. Iowa : Williams, 
2588. 
Oxmoor sandstone, Mississippian, Alaba- 
bama : Burchard, 355. 
Painterhood limestone, Pennsylvanian, 
Kansas : Schrader and Haworth, 2144. 
Paint Lick bed, Ordovician, Kentucky : 
Foerste, 884. 
Palisade conglomerates, Tertiary, Alaska : 
Brooks, 313. 
Pamunkey group. Eocene, Maryland : Clark 
and Mathews, 488; Shattuck, 2188; 
Sha thick ct al., 2103. 
Pamunkey group. Tertiary, Maryland and 
Delaware: Miller, 1749. 
Parachucla shale, Oligocene, South Caro- 
lina : Sloan, 2218. 
Paris. Ordovician. Kentucky : Miller. 1748. 
Paris shale, Carboniferous, Arkansas : Col- 
lier, 556. 
Park shale, Cambrian, Montana : Emmons, 
806. 
Park granite. Tertiary, Cascade Moun- 
tains : Daly, 632. 
Park City formation, Carboniferous, Utah : 
Boutwell, 271. 
Parkman sandstone, Cretaceous, Wyoming : 
Darton, 644-647. 
Parma sandstone, Carboniferous. Michigan : 
Cooper, 575 : Lane, 1516. 
Parrish limestone, Devonian, New York : 
Luther, 1634. 
Parsons formation. Pennsylvanian, Kansas * 
Schrader and Haworth, 2144 ; Wooster, 
2636. 
Paseagoula formation. Pliocene, Alabama : 
Smith, 2229. 
Paseagoula formation, Tertiary, Gulf re- 
gion : Smith, 2226. 
Paseagoula formation, Tertiary, Missis- 
sippi : Crider, 595; Crider and Johnson, 
599. 
