INDEX. 



PAGE. 



Aclis robustus 39<5 



Acta'ouina minuta 594 



Atinocrinidse 327 



Actinocrinites 339 



Actinocrinites (lelicatus 343 



Actiuocriuites lougus 345 



Actiuufriuites penicillus 342 



Actiuocrinitesproboscidalis 328, 330 



Actinocriuites sc-ulptus 343 



Agaricocrinus nodosus 397 



Agaricocrimis "Wbitfieldi 499 



Agassizocrinus carbonarins 566 



Agassizocrinus couicus 557 



Aj^a.ssizocrinus Chesterensis 558 



A gassizocrinus globosus 557 



- v.ocrinus gibbosus 558 



A ua-Mzocrinus pentagouus 556 



Agelacriuites squamosus 513 



Aldrich's coal, analysis of 191 



A UopraraDocrinaa 368 



A llorisma costata 585 



Allovisma Geinitzii 586 



Aiuphoracriuus 386 



Amphoracrinus divergens 388 



Aniphoraerinus spinobrachiatus 389 



Anomphalns rotulus 597 



Artesian well. Princeton 172 



Artesian well. Tiskilwa 173 



Athyris subtilita 570 



A vicula Morganensis 576 



A vicula longa 578 



A viculopecten neglectus 589 



Barycrinus geometricus 485 



Baryerinus Herculeus.-. 485 



Baryerinus Hoveyi 486 



Barycrinus maiiiritu-iis 483 



Barycriinis nianimatus 486 



Baryerinus pentagouus 487 



Barycrinns spectabilis 530 



Barycrinus siibtuniidus 487 



Batwriniis .' 364 



Batocrinus Cassedayanus 370 



HatfM-rinus ( 'bristyi 379 



I'.ntiifiinus nt'^lcrtus 377 



Batocriims pyriformis 375 



Batocrinus quasillns 369 



Bati'ioriiuis reiuiliraehiatus. . 370 



Batocrinus trochiscus 372 



Batocriuus Vemeuilianua 328, 379 



Bierman's coal shal't, section of 180 



Blue Limestone 21, 38, 69, 88, 113, 128 



Bog iron ore 72, 263, 303 



Boone county, geology of 95 



Boone county, ecoiiom. geology of 100 



Buff Limestone 22, 70, 89, 115, 128 



Building stone, table showing properties of 157 



Bureau county, geology of 167 



Bureau county, section of 169 



Bureau county, Coal Measures of 172 



Bureau county, econom, geology of 182 



Burlington Limestone 278 



Calceocrinus 442 



Calceocrinus Bradleyi 502 



Calceocrinus Wachsmuthi 444 



Cardiomorpha Missouriensis 588 



Carroll county, geology of 75 



Catillocrinus Bradley i 504 



Chsenomya rhomboidea 540 



Chrenocardia Minnehaha 588 



Choeuocardia o vata- 586 



Chester group 27-2 



Chiton carbouarias 608 



Cincinnati group 16, 35, 65, 77, 98, 110, 131, 152 



Chouetes millepuiii:tata 566 



Chonetes Smithii. 570 



Cleveland coal, section of 192 



Clinopistha lavis 584 



Codonites 463 



Codonites gracilis 467 



Codouites stelliforniis 464 



Connlaria Missouriensis 541 



Conularia subcarbonaria 520 



Crinoidea, notes on structure of 323 



Cyathocriuites 325, 400 



Cyathocrinites fragilis 401 



( ' yathocrinites poterium 489 



Cyathocrinites sculptilus 401 



Cyathocrinites tenuidactylns. 403 



Dentalium annulostriatnm ."iHfl 



Dentalium Meekianum 590 



Dichocrinus cornigerns 537 



Dichoerinus expansus 500 



Dicbocrinus ficus 502 



