weeks.] PETROLOGY, AND MINEKALOGY FOR 1892-1900. 
105 
Geologic formations described — Continued. 
st. Louis conglomerate, Hubbard, 2798. 
St. Louis group, Elrod, 1666b. 
St. Louis limestone, Beyer, 136. 
St. Louis limestone, Macbride, 3624. 
St. Peter, Winchell and Ulrich, 6337. 
St. Peter sandstone, Calvin and Bain, 720. 
St. Peter sandstone, Norton, U22. 
St. Peters sandstone, Blatchley and Ashley, 
490. 
st. Peters sandstone, Buckley, 655. 
St. Thomas sandstone, Gallaher, L933a. 
Salina, Ries, L623. 
Salina beds, Clarke, 971. 
Salina beds, Clarke and Schuchert, 965. 
Salina formation, O'Harra, 1129. 
Salina group, Bishop, 148. 
Salina group, Lincoln, 3512. 
Salina group, Luther, 3602, 3603. 
Salt Fork division. Cragin, 1 128. 
Sangamon soil, Campbell and Leverett, 712. 
San Juan formation, cross, 1201. 
San. I nan formation, Lakes, 3319. 
San Miguel bed, Vaughan, 5738. 
San Miguel beds, Hill, 2557. 
s.in Migue] conglomerate, Lakes, 3319. 
San Miguel formation, Cross, 1201. 
San Miguel formation, Purington, 1512. 
San Miguel formation, Smith. 5039. 
San Pablo formation, Fairbanks, 1768. 
San Pablo formation, Knowlton, 3249. 
San Pablo formation, Merriam, 3920,3922. 
San Pablo formation, Turner, 5492. 
Sandstone, first, Shepard, 4946. 
Sandstone, second, Shepard, 1946. 
Sangamon zone, Leveretl 3493. 
Sangamon /our, Leverett, 3495. 
SaultSte. Marie sandstone, Bell, lOfi 
Savage formation, < Hark, 912. 
Savanna sandstone, Taff, 52 
Savanna formation, Taff and Adams, 5295. 
Savoy schist, Emerson, 1676,1677. 
Saw atch quartzite, Emmons, 1712. 
Saxicava sand, Wilson, 0279. 
Schoharie grit, Clarke, 971. 
Schoharie grit, Clarke and Schuchert, 96 >. 
Scott shale, Keith, 2965. 
Senecan, Clarke, 971. 
Senecan, Clarke and Schuchert, 965, 977. 
Sequoia formation, < Jampbell, 735. 
Severj shale, Haworth, 2375. 
Sr\ i.T shale. < lampbell, 735, 740. 
sew ell marls, ( 'lark, 915. 
Sewell formation. White, 6052. 
shark River formation, Clark. 910,915. 
Shasta, Stanton, 5201. 
Shawangunk grit, Clarke, 971. 
Shawangunk grit, Clarke and Schuchert, 965. 
Shelbyville moraine, Leverett, 3495. 
Shenandoah formation, Clark, 912. 
Shenandoah limestone. Campbell, 740. 
Shenandoah limestone, Darton, 1335. 
Shenandoah limestone, Prosser, 1501. 
Shenandoah limestone, Spencer, 5115. 
Sherburne formation, Prosser, 4497. 
Sheridan formation, Matthew , 3804. 
Sheridan sandstone, Gregory, 2166. 
Geologic formations described— Continued. 
Sheridan sandstone, Williams, 6190. 
Shirley stage, Knight, 3210a, 3217. 
Shoal Creek limestone, Hill and Vaughan, 
2556. 
Shunganunga shale, Beede, 390. 
Shushitna slates, Eldridge, 1632. 
Shuswap series, Dawson, 1426. 
Siamo slate, Van Hise, 5709. 
Siamo slate, Van Hise and Bayley, 5704. 
Signal Hill sandstone, Walcott, 3815. 
Sillery series, Dawson. 1423. 
Siluric, Clarke, 971. 
Siluric, Clarke and Schuchert, 965. 
Silver Lake shale, Beede, 390. 
Silveria? formation, Leverett, 3495. 
Similkameen formation, Russell, 4721. 
Sioux quartzite, Beyer, 433. 
Sioux quartzite. Todd, 5436. 
Sioux quartzite, Wilder, 6140. 
Skwentna series, Spurr, 5184. 
Skunnemunk formation, Kirs, 1022. 
-malls Brook limestone, Ami, 87. 
Smelt Brook formation, Ami, 110. 
Smell Brook shales Ami, 87. 
Smith River lake beds, Weed, 5946. 
Snyder Creek shales, Gallaher, 1933a. 
Sockanossel sandstone, Shaler, Woodworth, 
and Foerste, 1940. 
flier Creek shale, Beede, 390. 
Sooke beds, Merriam, 3924. 
Sphinx formation, Smith, 5039. 
Spokane shale, Weed, 5953. 
Spokane shales, Walcott, 3815. 
-prin-' Creek clays, Gould, 2073. 
SpringCreei limestone, Williams, 6191. 
Spring rock, Beed 
Square Lake limestone, Williams. (',190. 
Stanford conglomerate, Weed, 5945. 
stanton limestone, Beede, 390. 
State quarry limestone, Calvin, 707, 711. 
Staten [sland serpentine, Merrill, 3937. 
Steep Pock scries. .M(dnnc-, 3882. 
lacoom gravels, Willis and Smith, 6216. 
Stictopora bed, Sardeson, 4799. 
Stictoporella bed, Sardeson, 1799. 
Stictoporella bed, Winchell and Ulrich, 0337. 
Stockbridge limestone. Hobbs, 2040. 
Stockbridge, Marcou, 3004. 
Stockton group, K i'mimel, 3283. 
Stockton series Ktimmel, 3277,3279,3280. 
Stones River, Winchell and Ulrich, 0337. 
Stonewall limestone, Cragin, 1130. 
Stonybrook quartzite, Hobbs, 2627. 
Stunt/, conglomerate, Winchell, 6328,6359. 
Sturgeon formation. Clements and Smyth, 
1017. 
Sturgeon quartzite, Van Hise and Bayley, 5713. 
Styliolus limestone, Grabau, 2085. 
Sub-Aftonian, Calvin, 714. 
Sub-Aftonian stage, Beyer, 435. 
Sugarloaf arkose, Emerson, 1676, 1677. 
Sukonkbeds, Shaler, Woodworth and Foerste, 
4940. 
Sunrise series, Mendenhall, 3903, 3907. 
Superjacent series, Lindgren, 3534, 3547. 
Superjacent series, Turner, 5467, 5471. 
