ixdex. 389 



PAGE. 



Letter to the Governor 1 



Lower coal-measures 332 



Lower rnagnesian limestone 172 



Lower Silurian system 171 



Madison county 305 



suggestions for mining coal in 314 



Maroon, Prof. Jules, on Cretaceous rocks in western Iowa 285 



Maquoketa shales 180 



Mclsaac, P. Cretaceous fossil found in the drift 98 



Meek and Hayden on Cretaceous rocks of Upper Missouri 288 



Meek and "Worthen on Cincinnati group 181 



Middle coal-measures 241, 265 



general section of 272 



Mills'county 367 



Missouri l iver 55 



bottom 298 



suggestion for reclaiming overflowed land of 303 



depth of disturbed material in bed of 300 



sediment in water of 56 



Montgomery county 362 



Niagara limestone 182 



Okoboji lake 72 



Owen, Dr. D. D. on Bluff Deposit of Iowa 104 



Cretaceous rocks of Iowa 285 



Page county 348 



Paint Material at Red Oak, Montgomery county 367 



Parvin, Prof. T. S. on climate of Iowa 139 



Peat, ancient, in Adair county 339 



near Davenport 119 



near Iowa City 120 



Potsdam sandstone 171 



Pottawattamie county 376 



Prairies, origin of 132 



growth of trees on 131 



Pratt, H. TV., account of anciet peat near Davenport 119 



Ringgold county 328 



River, Big Sioux 53 



Boyer 49 



Cedar 63 



Chariton 44 



Dls Moines .. 58 



