INDEX 



Page numbers referring to descriptions of fossils are printed in black face 

 type. The superior figures tell the exact place on the page in ninths, e. g. i88^ 

 means page i88, beginning in the third ninth of the page, i. e. about one third 

 of the way down. 



Accessions to paleoutologic collec- 

 tions, 23^-27'. 

 Acidaspis sp., I49^ 

 Actinoceras, 333°. 

 abnorme, 332". 



figure, ZZ^- 

 bigsbyi, 332'. 

 Actinopteria arenaria, 198*. 



communis, 143^ 146^ 205^ 223^, 



256^, 266. 

 textilis, 146', 185*, 187', I88^ 226^ 

 227', 256', 266. 

 arenaria, 185*, 188', 189', 189', 

 227\ 256'-S7\ 266. 

 Actinozoa, 235^ 262. 

 Agassiz, Alexander, cited, 190^, ni". 

 Ambonychia sp., i6o\ 

 Ami, H. M., cited, 139^ 140*. 

 Ampyx hastatus, 157*, 157^, 158'. 

 Anodontopsis, i6i^ 

 Anoplia nucleata, I45^ 

 Aspidocrinus scutelliformis, I97^ 

 Atractites, 328'. 

 Atrypa sp., 2og^. 

 reticularis, 181', 183', T87", I93\ 

 195^ 200', 207^ 207'', 211®, 21 1^ 

 211°, 217", 2i8^ 230^ 230^ 231', 



23 1^ 232', 233', 246', 263, 348', 



351', 352% 353*, 354*, 354^ 355^ 

 355', 356'. 

 Atrypina imbricata, 183-, 196^, 199^ 



223', 224^ 246', 263. 

 Aulopora sp., 142^ 

 Aviculopecten incrassatus nov., 146". 

 perceus nov., I46^ 



Baltoceras, 336', zz?"- 

 Barkentin, William S., appointment 

 as lithographer, 2I^ 



Barrande, J., cited, 153', 3or, 333', 



339'- 

 Barrett, S. T., cited, 175', 176', 180', 



184', 227', 231', 246', 269', 344*; 



acknowledgments to, 260°. 

 Bassler, R. S., cited, 204'. 

 Bather, F. A., cited, 302*, 302'', 318', 



319', 323', 3^7^ 340'. 

 Beachia amplexa nov., 143^, 146*, 



suessana, 185', i86^ 187*, 189^ 198', 

 220", 226', 226", 227", 228', 245', 

 263. 

 immatura, 20 1\ 204^ 

 Becraft limestone, 179^ I83'-84^ 193', 



194', 195', 197*, 200', 202\ 203*, 212', 



226^ 23 2^ 

 Becraft mountain, fossils, 191^. 

 Beecher, C. E., cited, 177-, 248^ 269', 



269*; acknowledgments to, 28o^ 

 Beekmantown formations of Lake 



Champlain basin, 6^-7^; fauna, 15*- 



I6^ 

 Bell, Robert, cited, 139*. 

 Bellerophon, i6i\ 



auriculatus, 355^ 



gaspensis nov., I46^ 



plenus, I46^ 

 Bertie limestone, 356'. 

 Beyrichia, i8o^ 181', 216^ 



sp., 209^ 209", 216', 268, 352-, 



manliusensis, 209^ 213*, 214^ 214', 



215", 215', 215^, 221^ 22l\ 268. 



Bidwell's crossing, fossil trails at, 18'- 



20=. 

 Billings, Elkanah, cited, 139'*, 140', 



141', 151'. 

 Bilobites varicus, 196*, 207*^, 219", 263. 

 Binnewater quartzites, 346'. 

 Blake, J. P., cited, 327", 340^ 



