104 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 189. 
Geologic formations described — Continued. 
Portage beds, Clarke, 971. 
Portage beds, Clarke and Schuchert, 965. 
Portage group, Bishop, 448. 
Portage group, Clarke, 957, 958. 
Portage group, Lincoln, 3512. 
Portage group, Luther, 3603. 
Portage sandstone, Luther, 3601. 
Portage shale, Luther, 3602. 
Poteau group, Drake, 1539. 
Potomac, Stanton, 5201. 
Potomac formation, Ladd, 3303. 
Potomac formation, Ward, 5851. 
Potosi rhyolite series, Cross, 1201. 
Potsdam, Blatchley and Ashley, 496. 
Potsdam, Cushing, 1245. 
Potsdam, Ells, 1661. 
Potsdam, Wadsworth, 5770. 
Potsdam sandstone, Buckley, 655. 
Potsdam sandstone and limestone, Clarke, 971. 
Potsdamian, Clarke, 971. 
Potsdamian, Clarke and Schuchert, 965. 
Pottstown shale, Lyman, 3616. 
Pottsville, White, 6052. 
Pottsville formation, O'Harra, 4129. 
Pottsville formation, Clark, 912. 
Poxino Island shale, Weller, 6003. 
Pre-Kansan drift, Bain, 192, 199. 
Price sandstone, Campbell, 735. 
Princeton conglomerate, Campbell, 735. 
Pteranodon bed, Logan, 3552. 
Puckwunge conglomerate, Winchell, 6349, 
6358, 6372. 
Puckwunge slate, Winchell, 6328. 
Puerco Marcou, 3664. 
Puerco formation, Smith, 5039. 
Puget formation, Smith, 5039. 
Puget formation, Willis, 6208, 6206. 
Puget formation, Willis and Smith, 6216. 
Puget group, Kimball, 3161. 
Pulaski formation, Diller, 1509. 
Pulliam formation, Vaughan, 5739. 
Purgatory conglomerate, Shaler, Woodworth 
and Foerste, 4940. 
Puyallup sands, Willis, 6209.' 
Quadrant formation, Weed, 5945, 5946. 
Quadrant group, Weed, 5953. 
Quail porphyry, Emmons, 1712. 
Quana granite, Bain, 212. 
Quebec city, Marcou, 3664. 
Quebec group, Dawson, 1423. 
Quinnesec schists, Van Hise and Bayley, 5713. 
Quinnimont formation, White, 6052. 
Raccoon River beds, Bain a nd Leonard, 204. 
Raggedy Mt. gabbro, Bain, 212. 
Raleigh limestone, Campbell, 735. 
Rampart series, Emmons, 1713. 
Rampart series, Spurr, 5173. 
Raneocas formation, Clark, 910, 912, 915. 
Random terrane, Walcott, 5818. 
Randville dolomite, Clements and Smyth, 
1017. 
Randville dolomite, Van Hise and Bayley, 
5713. 
Rapid schist, Schrader, 4834. 
Raritan, Clark and Bibbins, 913. 
Raritan formation, Clark, 912, 
Geologic formations described— Continued. 
Redbank sands, Clark, 910, 915. 
Red beds, Beede, 392. 
Red Beds, Haworth, 2369. 
Red beds, Williston, 6247, 6258. 
Red Bluff formation, Cragin, 1128. 
Red Lake moraine, Todd, 5435. 
Red Mountain formation, McCalley, 3818. 
Reeder sandstone, Gould, 2073. 
Relief formation, Lindgren, 3547. 
Rhinidictya bed, Winchell and ririeh, 6337. 
Richmond, Winchell and Ulrich, 6337. 
Richmond beds, Clarke, 971. 
Richmond beds, Clarke and Schuchert, 965. 
Richmond beds, Hill, 2549. 
Richmond shale, Campbell, 736. 
Rico formation, Cross and Spencer, 1206. 
Riga schist, Hobbs, 2646. 
Rio Grande gravel, Herri ck, 2458. 
Rio Grande loess, Herrick, 2458. 
Riversdale formation, Ami, 110. 
Robinson diorite. Weed, 5946. 
Robinson formation, Turner, 5467. 
Robinson quartzite, Tower and Smith, 5445. 
Rochester shale, Clarke, 971. 
Rochester shale, Clarke and Schuchert, 965. 
Rockcastle conglomerate lentil, Campbell. 736, 
737, 739. 
Rock Falls series, Lane, 3400. 
Rockford limestone, Hopkins and Siebenthal, 
2742. 
Rockville conglomerate, Calvin, 714. 
Rockwood formation, Campbell, 735,740. 
Rockwood formation, Clark, 912. 
Rockwood formation, Darton, 1335. 
Rockwood formation, Spencer, 5115. 
Rogersville shale, Campbell, 740. 
Romney formation, Clark, 912. 
Romney formation, O'Harra, 4129. 
Romney shale, Campbell, 735. 
Romney shale, Darton, 1335. 
Romney shale, Spencer, 5115. 
Rondout waterlime, Clarke, 971. 
Rondout waterlime, Clarke and Schuchert, 
965, 977. 
Rondout waterlime, Welder, 6003. 
Rose Island arkose, Shaler, Woodworth, and 
Foerste, 4940. 
Roslyn sandstone, Russell, 4721. 
Rossville shale and sandstone, Beede, 390. 
Rowe schist, Emerson, 1676, 1677. 
Roxbury conglomerate, Burr and Burke, 667. 
Russell formation, Campbell, 735, 740. 
Rutledge limestone, Campbell, 740. 
Sac limestone, Shepard, 4946. 
Sachuest arkose, Shaler, Woodworth, and 
Foerste, 4940. 
Saganaga granite, Grant, 2132. 
Sailor Canyon formation, Lindgren, 3534,3547. 
St. Clair limestone, Williams, 6191. 
St. Clair shales, Sherzer, 4954. 
St. Croix sandstone, Norton, 4122. 
St. John group, Walcott. 5819. 
St. Lawrence dolomite and shale, Norton, 
4122. 
St. Lawrence shale, Berkey, 427,429. 
St. Louis, Beyer, 435. 
