INDEX. 



Ill 



Kankakee and Iroquois counties, Coal Mea- ; 



sures in 231 



Kankakee and Iroquois counties, Niagara 



limestone in 232 



Kankakee and Iroquois counties, Cincinna- 

 ti group in 233 



Kankakee and Iroquois counties, economi- 

 cal geology of , 234 



Kankakee and Iroquois counties, ancient 



valley in 23*7 



Kendall county, geology of 136 



Kendall county, Coal Measures in 138 



Kendall county, Niagara group in 139 



Kendall county, Trenton limestone in. . . .143 

 Kendall county, St. Peters sandstone in.. .146 

 Kendall county, economical geology of. . . 147 



Knorria 445 



Knox county, geology of. 813 



Knox county, Coal Measures in 314 



Knox county, economical geology of. 322 



Lepidodendron 428 



Lepidodendron cruciatum 432 



Lepidodendron elegans 433 



Lepidodendron forulatum 431 



Lepidodendron gracile 433 



Lepidodendron Greenii 433 



Lepidodendron modulatum .430 



Lepidodendron Morrisianum 430 



Lepidodendron mammillatum 432 



Lepidodendron rigens 429 



Lepidodendron Tijoui 431 



Lepidophloios auriculatum 439 



Lepidophloios laricinum 440 



Lepidophloios protuberans 440 



Lepidostrobus 440 



Lepidostrobus connivens 442 



Lepidostrobus lancifolius 442 



Lepidostrobus oblongifolius 441 



Lepidostrobus ornatus 443 



Lepidostrobus ovatifolius. 441 



Lepidostrobus truncatus 442 



Lepidophyllum foliaceum .444 



Lepidophyllum rostellatum .443 



Lepidophyllum striatum 443 



Listracanthus 371 



Listracanthus hystrix 372 



Lophodus 360 



Lophodus variabilis 361 



Lycopodites annulariaefolius 426 



Lycopodites Meekii 426 



McHenry and Lake counties, geology of. .126 

 McHenry and Lake counties, Drift depo- 

 sits in 129 



McHenry and Lake counties, Niagara 



group in 131 



McHenry and Lake counties, Cincinnati 



group in 132 



McHenry and Lake counties, economical 



geology of 183 



Mercer county, geology of 301 



Mercer county, Loess and Drift in 302 



Mercer county, Coal Measures in 302 



Mercer county, Kinderhook group in 807 



Mercer county, economical geology of. ... 807 

 Mercer county, soil and agriculture of. . . .311 



Morgan county, geology of. 149 



Morgan county, Coal Measures in 151 



Morgan county, St. Louis limestone in. . .160 

 Morgan county, economical geology of. . . .161 



Neuropteris. 380 



Neuropteris angustifolia 467 



Neuropteris capitata 388 



Neuropteris Collinsi. 382 



Neuropteris coriacea 387 



Neuropteris crenulata 468 



Neuropteris fimbriata 384 



Neuropteris fasciculata. . . . , 381 



Neuropteris hirsuta 380 



Neuropteris inflata 387 



Neuropteris microphylla . . . : 467 



Neuropteris rarinervis 386 



Neuropteris verbenaefolia 385 



Neuropteris vermicularis 385 



Odontopteris Bradleyi 390 



Odontopteris chlotheimii 391 



Odontopteris subcuneata 390 



Orodus corrugatus 358 



Pachypteris 419 



Pachypteris gracillima 419 



Palaeoniscus gracilis 347 



Palaeoxyris 464 



Palaeoxyris appendiculata 465 



Palseoxyris corrugata 466 



Palasoxyris Prendeli 464 



Peat, deposits of 124, 134,148 



Pecopteris abbreviate 403 



Pecopteris arguta 402 



Pecopteris aspidioides 403 



Pecopteris Bucklandi 401 



