INDEX. 2 1 9 



Eaton County Coal Measures ■ 130 



False Presque Isle 50 



Fisk's Sandstone Quarries 129 



Flint 97 



" River 41 



Flat Rock, Monroe County 31 



" Rock Point, Saginaw Bay 69 



Flushing 140 



Fossils of Water-Lime Group 32-34 



" " Gypsiferous Strata 106, 109 



" " Carboniferous Limestone 103, iii, 113, 120 



" " Black Shale Formation 66 



" " Grindstone Quarries 72, 73 



" " Marshall Sandstone 82, 83 



" " Hamilton Group 41-49 



FoRKST Lands, Distribution of 7 



FossiLiFEROUS Kidney Ores 89 



Gas Wells 6S 



Geographical Position of Lower Peninsula i 



General Geological Structure of Lower Peninsula 21 



Glass Sand 27 



Grand River 4 



Grandville Plaster Quarries 109 



Grand Ledge Outcrops of Coal Measures 131 



Grindstone Quarries 71 



Gibraltar Limestone Quarries 31 



Gypsum, Alabaster Point 105 



" on Aux Grees River 107 



" in Grand River Valley 108 



Hat Point ... 70 



Hamilton Group. 38 



Helderberg Group 23 



Hillsdale Artesian Boring 8i 



Heinzelman's Island. 121 



Holland Waverly Group 84 



Huron Shales of Winchell 65 



Huron River 4 



Hydraulic Cement Rock of Alpena 44 



Ida" Quarries 27, 34 



Ionia Sandstone Quarries. ... 134 



Jackson Coal Mines 123 



Kawkalin Salt Wells ^ 96 



Khagashewung Point 58 



Kidney Ores, Fossiliferous 89 



