50 GENERAL INDEX. 



Johnson Co., St. Louis group 1,378-381 



Economical Geology, (coal, iron ore, saltpetre, mineral springs, build- 

 ing material, agriculture) 1,404,409 



Kane Co. See DeKalb, Kane and DuPage counties. 



Kankakee and Iroquois Counties, (F. H. BB ADLEY) IV, 226- 240 



Physical features IV, 226 



Sections of strata IV, 231-237; VII.25 



Quaternary (ancient channel of Lake Michigan) IV, 226-230 ; VIII, 11 



Coal measures IV, 231 



Niagara limestone I V , 232 



Cincinnati group IV, 233 



Economical Geology, (coal, bog-iron, peat, building stone, water) ..IV, 234 



Kendall Co., (H. M. BANNISTER) IV, 136-148 



Physical features IV, 136 



Sections (vertical) of strata IV, 1 11-145 



Longitudinal section from Montgomery, Kane Co., to Milford IV.138 



Drift IV, 137 



Coal measures IV, 138 



Niagara group IV, 139 



Cincinnati group IV, 140 



Galena and Trenton limestones IV, 143 



St. Peter's sandstone IV, 146 



Economical Geology, (building materials, sulphur springs, peal) IV, 147 



Knox Co., (H. A. GBEEN) IV.313-324 



Physical features IV, 313 



Sections of strata IV, 314-322 



Quaternary deposit- IV, 313 



Coal measures I,22f; IV, 314-322 



Economical Geology, (building stone, lime, coal) IV, 322 



Lake Co. See McHenry and Lake Counties. 



LaSalle Co., (LEO LESQUEREUX) 1,231-237 



(C. H. FREEMAN) 111,257-287 



(A. H. WORTHEN) VIM, 39-51 



Geological map of the county (exc. Tps. 29 and 30, K. 2, E.) ....opp. 111,256 



Physical features 111,256 



Sections (vertical) 1,231; 111,263-286; VII, 41-51 



Sections (longitudinal 111,261,270 



Quaternary deposits 111,262; VII, 51 



Coal measures 1,231 237; 111,264-275; VII, 40-50 



Trenton limestone 111,276 ; VII, 40 



St. Peter's sandstone 111,279; VII, 39 



Calciferous 111,280; VII.50 



Economical Geology, (coal, building stone, lime, glass, sand, hydraulic 

 cement, fire clay, peat, mineral springs, artesian wells, natural 

 gas) Ill, 282 ; VII , 39-51 



Lawrence and Richland counties. (A. H. WORTHEN) VI, 37-50 



Physical features VI, 37, 44 



Sections of strata VI, 38-48; VII.8 



Quaternary deposits VI, 37,44 



Coal measures VI, 38, 45: VII, 8 



Economical Geology, (coal, building stone, iron ore, lime, agricul- 

 ture) ...VI.42,48 



