270 



INDEX. 



Page 



PlethospoDglse 91. 



Polyplacopiiora , 100 



Porilera 91 



Porphyry 31 



Post-paleozoic formations 87 



Poteriocrimis agnatus 2 1 1 



brittsi 211 



carbonarius 219 



enormis i 208 



hemisphericuB 220 



longidactylaa 2U 



maniformis 217 



meekianus 211 



missouriensis 211 



proboscidians 212 



ihombiferus 210 



rugosus 225 



rusticellus 212 



vantiornei 213 



Preface.. 11 



Preservation of fossils 27 



Principal Mississippian section 45 



Proetus anriculatas 233 



missouriensis 233 



swaliowl 234 



Protozoa 91 



Protozoans 102 



Pterococrinus cliesterensis 206 



Ptyclioporia conica 233 



Ptychocrinus splendens 162 



Receptaculites oweni 103 



Relations, biological, of fossils 89 



Reptilia 101 



Ehodoerinus coxanus 163 



parvus 163 



polydactylns 163 



wachsmuthi 163 



whitei 163 



wortbeni 162 



Ehizopoda 91 



Kotifera 94 



Saccharoidal sandstone S4 



Saint Louis limestone 71 



base 70 



section 47 



unconformity 71 



Sainte Genevieve section 48 



Sainte Mary section 48 



Sands, Cretaceous 87 



Sandstone, Aux Vases 72 



basal 35 



first 34 



in gorge of Kaskaskia. 74 



second. 34 



third Bi 



Scaphiocrinus '? boonvillensis 212, 225 



carbonarius 219 



constrlctus. 212, 225 



dactyliformis 211 



gorby i 213 



hemisphericus 220 



missouriensis 211 



orbicularis 217 



proboscidialis 212 



rusticellus 2I2 



sampsoni 21.S 



scoparius 212 



Scaphora 100 



Schizoblastus melo 138 



melonoides 13S 



proj ectus 14o 



roemeri 137 



sampsoni 137 



sayi 188 



Page 



Scytalocrinus dactylus 213 



maniformis 2i7 



vanhornei 213 



Second limestone 34 



sandstone 34 



Section , BurliDgton 46 



Chester 48 



Keokuk 46 



Louisiana 47 



Saint Louis 47 



Ste. Genevieve 48 



Ste. Mary ... 48 



Warsaw 47 



Sections on Mississippi river 45 



principal Mississippian 45 



Shales , Hannibal 56 



Hudson 39 



Lower Silurian 39 



Thebes . 39 



Sheppard, E. M , ackiowledgment. ... 19 



Shumard, B. V., quoted 89, 42 



Silurian 88 



upper 40 



Sphenopterium enorme 118 



enorme, var. dtpressum 118 



Sponges 102 



Steganocrinus araneolns 194 



concinnus 194 



pentagonus 195 



sculptus 194 



Stemmed echinoderms 143 



Stratigraphy, Coal Measures 84 



general 18 



Streptelaamacorniculum 117 



Striatopora carbonari a 120 



missouriensis 121 



StromatopoT a expansa 104 



Strotocrinus bloom deldensis 193 



liratus 191 



regalis 193 



unobrosus 190 



Structure of Ozark series 37 



Subcarboniferous 44 



Su hdivisions Coal Measures . 79 



Kinderhook . 51 



Swallow, G C, quoted 38, 49, 53 



Sy mbathocrinus blairi 207 



dentatus 206 



swailowi 207 



wortheni 20i 



Svnonoymy 14 



Synopsis of animal kingdom 9 



Syringopora harveyi 121 



multattenuata 122 



Table of animal kingdom 91 



carboniferous crinoids 14t 



formations SO 



Talarocrinus simplex 205 



Taxocrinus giddingei 223 



shumardianus 224 



thiemi.. . 223 



Ichthyocrinus burlingtonensis 223 



Teliocrinus liratus 191 



umbrosus 190 



Thebes shales.. , 39 



Third limestone 34 



sandstone 33 



Topographical features 29 



Transmittal , letter 3 



Treatment of groups 17 



Trematocrinus typus 164 



Trenton limestone 38 



lower 38 



Troostocrinus lineatus 186 



Typical sections 45 



