INDEX 



Acervularia ? inequalis, 3 IT 5 . 

 Acidaspia callieera, 327 s . 



tubereulatus, 300% 307% 308'. 

 Aetinoceras luxum, 188 s , 327-'; figures, 



187. 



Actinopteria arenaria, 305 8 . 



boydi, 22 8 , 2 62 2 , 265 7 , 330 4 ; fig- 

 ures, 218. 

 eximia, 326 3 . 



securiform is, 147°; figure, 149. 



subdecussata, 293 1 . 



textilis, 147°, 307", 308% 30S 3 , 309 7 , 

 3 10-: figures. 149. 

 Age of strata, 88 2 -98 5 . 

 Agoniatite limestone, 208% 231 s , 252 1 ; 



fossils, 329% 

 Agoniatites expansus. 208 4 . 212 3 , 



329 7 ; figures, following p. 211. 

 Altamont section, 2S0"-83% 

 Alveolites explanatus, 320% 

 Ambocoelia, sp. nov. 305% 



umbonata, 330% 332-. 

 Ami, cited, 228 9 . 



Ampbigenia elongata, 199', 295% 326% 



328°; figures, 200. 

 Anastropbia verneuili, 29 7% 306% 309% 



322 3 . 



Anoplia nucleata, 299 T , 305"', 308% 

 Anoplotheca concava, 307 s , 322-. 

 Aragonite, 360 s . 



Arebaeopteris jacksoni, 225 s ; figure, 

 226. 



Archanodon catskillensis, 225°; figure 

 225. 



Arenaceous, term, 94 s . 

 Arenyte, term, 94°. 

 Asbburner, cited, 283'. 

 Aspidocrinus callosus, 321°. 

 digitatus, 321°. 



scutelliformis, 153% 155% 174 4 , 252°, 

 256 5 , 289% 290% 300% 306% 307 7 , 

 32 1 8 , 323'. 



Athyris spiriferoides, 213 9 -14 1 . 261% 

 261 s , 265% 265 6 , 265 9 , 266 9 , 27 1% 292 9 , 

 328% 329°, 332 3 ; figures, 21(i. 

 Atrypa impressa, 183- ; figures, 181. 

 pseudomarginalis, 328 3 . 

 reticularis. 137 8 , 147 s , 15.V. 174'. 

 199 1 , 280 4 , 283 7 , 289% 2S9 7 , 290% 

 294 7 , 295 3 , 296 4 , 297% 298% 300% 

 301% 301% 304°. 300 s . 306 s , 307\ 

 307 7 , 308% 309 3 . 309". 309% 310% 

 313% 317 s , 320% 322% 323% 328 5 ; 

 figures, 138. 199. 

 impressa, 326% 

 spinosa, 294 s , 304 3 . 

 Atrypina imbricata, 290%. 308% 308% 

 322% 



Aulopora elongata, 324% 



schobariae, 321% 



tubula, 321% 

 Avieula communis, 297% 



gebbardi. 324% 



mantieula, 320 7 . 



naviformis, 320 7 . 



obliqnata. 320% 



obscura, 319 3 . 



rugosa, 290 s . 



subequilatera, 323 s . 



tenuilamellata, 289 9 . 



textilis arenaria. 324% 



umbonata, 320% 

 Aviculopecten fasciculatus. 330% 



formio. 330% 



idas, WMV. 



pectiniformis, 328% 



pborus, 330% 



princeps. 262 3 . 330% 



Bactrites clavus, 329% 

 Ball's cave, 349--5P. 

 Barytocelestite, 301% 

 Basal conglomerates, 123% 

 Basal sandstones. 253% 

 Beachia suessana, 305 s . 



