INDEX. 



807 



Page. 

 Iowan drift sheet, probable extent (if the Iowa por- 

 tion of the 144-153 



probable extent of Wisconsin sheet beneath 141-144 



soil and peat between Wisconsin sheet and 185-186 



structure of 137-140 



tbickuess of 136-137 



topography of 134-136 



Iowan loess, character and occurrence of 153-165 



distribution of 153-155 



mineralogieal constitution of 159 



size of the grain of 158-159 



structure of 156-164 



variations in thickness of 155-156 



variations in structure of 157 



Iowan outline compared with succeeding and pre- 

 ceding glaciations 188 



Ipava, 111., well at ' 688 



Irene, 111., wells in 575 



Iroquois, 111., well at 659 



Iroquois Basin, outwash in 323 



sand near, coarseness of 333-334 



Iroquois County, 111., altitude of 11 



drift sheets in 142-143 



general features of 654-656 



soil horizons in 265-266 



topography in 282 



topography of moraine in 258 



wells iu 654 



Iroquois moraine sand deposits, interpretation of. - . 336-337 



Iroquois River, outwash along basin of 314 



sand area near 331 



watershed of 507-508 



Irving, R. D., cited, on preglacial basin of Lake 



Michigan 7 



Isabel, 111., wells near 733 



Itasca, 111., wells near 592 



J. 



Jackson County, 111., altitude of 11 



general features of 778-779 



stria in 87 



wells in 778-780 



Jackson and Randolph counties, 111., ridge in ". 73-74 



Jackson and Williamson counties, 111., striae in 87 



wells in 780-781 



Jackson Creek, watershed of 505 



Jacksonville, 111., wells at 723 



Janesville, Wis., preglacial valley near 483-484 



Jasper County, III., altitude of 11 



general features of 754 



wells in 754-755 



Jefferson County, 111., altitude of 11 



general features of 773-774 



wells in 773-774 



Jenkins, O. P., information furnished by 412 



Jersey County, 111., general features of 746-747 



wells in 746-747 



Jersey ville, HI., wells at 747 



Jo Daviess County, 111., altitude of 9 



area of ; 564 



wells in 564-567 



Johnson County, 111., altitude of 11 



Johnson Creek, 111., exposure at 129-130 



Johnson's Mound : 



Joliet, III., striae at 



wells at 649-650 



Page. 



Joliet Mount, 111., section of 377 



Joy. 111., well near 623 



K. 



Kalamazoo River, depth of 441 



drainage basin of 541 



moraine aloug, description of 349 



sand plains near 436-437 



wells in valley of 359 



Kane County, 111., altitude of 9 



area and general features of 594 



bowlders in 268 



wells in 594-599 



Kane and Kendall counties, means of deposition of 



gravelly plain in 323-324 



Kaneville, 111., wells near 598-599 



Kanevillo esker, description of 284-286 



Kankakee III., wells at 653 



Kankakee Basin, character of 498 



Kankakee County, 111., altitude of 10 



general features of 65 3 



wells in 653-654 



Kankakee Lake, interpretations of the sand deposits 



known as 334-338 



Kankakee River, bowlders along 325-326 



deposits along 378-379 



descent of the 506-507 



drainage basin of 505-507 



sand deposits along 322-323 



sand near, thickness of 333 



topography near 332-333, 347 



till plain along valley of 324-325 



Kansan drift sheet, erosion of the 121-123 



Kansan till, extent of 105 



Kansas, 111., wells at 217, 733 



Kansas City, Mo., analyses of loess at (table) 164 



Kaskaskia Basin, origin of the ridges of the 73-74 



ridged drift of the 71-74 



topography of ridges in 72-73 



Kaskaskia River, bluff of, section of 739 



course and watershed of 523-524 



drift in valley of 202-203 



outwash in valley of 210, 238 



Keithsburg, 111., wells at 622 



Kendall County, 111., altitude of 10 



general features of 643 



table of wells along the Marseilles moraine in. . . 645 



wells in 643-645 



Kendall and Kane counties, III., gravel plain in, three 



means of deposition of 323-324 



KeDney, 111., well at 706 



Keokuk, Iowa, bowlder bed at 95-96 



"Yellow banks," section near 94 



Keewatin ice sheet, limits of 22 



Kent Creek, gorge on 492 



Kent, 111. , well at 568 



Kewanee, 111., wells at 624 



Kickapoo Creek, gravel tilling along 271-272 



outwash in valley of 276 



terraces of gravel along 212 



watershed of 513-514, 519 



Killbuck Creek, sand and gravel deposits along 278 



Kimball, 111., wells near 755 



Kingsley, Robert, information furnished by 372 



Kings Station, 111., wells near 607 



Kingston, 111., wells at 60 



