GENERAL INDEX. 
Pleurotomaria ee 203. 
a lata, 625. 
Polyceelia, sp.? 
Polypora nY shaheoy "450. 
ilis, 580. 
Varsoviensis, 2 
Poteriocrinus poh 221. 
Mi , 80. 
5 O98 
Proceedings, inaviial of, 15-87, 93- 
119, 805-840, 669-712. 
Productus Boonensis, 217. 
ounianus, 215. 
nsasensis, 216. 
Ca lawayensis, 640. 
semireticulatus, 292. 
antiquatus, 389. 
Pyrula, glabra, TDs. 
Regni — series catholomor- 
pha, 57 
Retzia? =o 295, 395. 
legs pa 653. 
2 393. 
Rostellaria Prt ose 42. 
Rotoscope, explanation of the, 24. 
Ste. Genevidve. geology of, 404, yee 
St. Louis, altitude of, 663. 
Sandstone, old red, near Milwaukie, 
Sandstones of Virginia and North 
Carolina, 
Scaphites yermiculus, 594. 
Schizodus ——- 193. 
725 
Schizodus Hornsey 193. 
eur Ludovicianus, var. atroven- 
Seal, E 
Selaginella Tepidophylla, 687. 
\Semicoscinium, 443. 
579. 
chomaniiaam. 443. 
tuberculatum, 579. 
Septopora, 448. 
Cestrien , 
othe, ‘eile oortaes regni vegeta- 
Se rpula valvata, 180. 
Silurian rocks in Tex s, 672. 
Skull of vertebrata, a he of, 98, 
335. 
Soils, a of, 158, 165. 
Biarmica? 
Solem 190. 
curvata, 208. 
Solen? Migounriensis 655. 
Permianus, 190. _ 
Spirifer amarus, 
Anne, 
Spiriferina Billingsit, 91. 
_——, Seni tonensis, 651. 
tonensis, 
Hannbalens, 649. 
Hawn 
eotienyy 651. 
Maconensis, 651. 
minima, 
Missouriensis, 650. 
Proutii, 649 
Spirorbis orbiculostoma, 181. 
Steno ao par aie oe 
Storms at St. ‘tous 705, 707. 
reseed Cornu a 
“arrangement of the 
612. 
rdianus, 395. 
Strophodonta sitidorsaa, 
idorsata, 637. 
icus, 193. 
