3G8 INDEX. 



PAGE. 



Deltodus latior 145 



occidentalis? 150 



parvus 151 



Powellii 7 154 



' ' propinauus 156 



trilobus 148 



Deltodopsis 158 



afflnis ICO 



" angustus 163 



" convolutus 165 



oxornatus His 



" inflexus 1(17 



StLudovici Kil 



Deltoptychius 89 



expansus 98 



nitidus 99 



" primus 93 



' ' Varsoviensis 96 



" Wachsmuthi 93 



Dentalium 325 



' ' Illinoiensis 325 



Devonian limestone, in Kock Island county 2 



Diagram illustrating the stratigraphical distribution, and the relations of the genera 



of Cochliodonts 61 



Dlchocrinus 313 



" Coxanus 313 



Hamiltonensis 313 



Dimension stone for the monument of Governor Bond 35 



Drain tile 25,40 



Drepanacanthus 253 



reversus ..." 253 



Echinodermata 327 



Echinodiscus 335 



optatus :6 



Economical Geology 1 



Edge wood shaft, record of 33 



Effingham county, coal in 33 



Eltcacrinus 357 



angularis 360 



" elegans 362 



" lucina 3i;o 



' ' meloniformis 361 



obovatus 358 



Eretmocrinus 306 



" Varsoviensis 306 



Eunemacanthus 246 



' ' costatus 246 



Eupachycrinus 311 



asperatus 311 



" Monroen.sis 312 



Evansville Quarry 3C 



Fairview, coal In 4 



Forest beds 23 



Fossils in LaSalle county 44,47 



