334 



INDEX. 



PAGE. 



Brine. Table of analyses of, 186 



British Fort (old), Drummond's I., 65 



Brown. A. J., shaft of, at Flushing, 119 



Brown's Quarry , Drummond's I. , 55 



Bryoeoa, 69,101 



Burnt Cabin Pt., 82 



Burt, William A., cooperating with Dr. 



Houghton , 10 



Butterworth's Salt Well, 74, 76, 90, 93 



Statistics of, 148, 168 



C. 



Oalam.Ua , 73 , 113 , 114 , 117 



Calciferous Sandstone, 51 



Caledonia, Shiawassee Co., 122 



Calhoun Co. , 76, 81 , 82 



Campement d'Ours, 50 



Cannon, Kent Co., 98 



Canwrigbt's well, Ooldwater, 77 



Carboniferous Limestone, 93 



distribution of, 93 et seq. 



Geological equivalents of, — 103 " 



Palaeontology of, 103 " 



Thickness of, 153 



Cardivm, 85 



Carp Lake, 72 



Carter's Quarry, 69 



Caryopkyllia duplicate, 104 



Cass River, 82,89 



ChceLetes lycoperdcn, 53 



Chalcedony, . 66 



Challis, « Prof. ,» 95,119 



Charity Islands, 101 



Chazy Limestone, 51 



Cheboygan Co., 61 



Cbeboyong Creek, Huron Co., 100,102 



Chemung Group in Mich., 136 



Cherty concretions, 66 



Chesaning. Saginaw Co. , 124 



Chimney Bock, 60 



Chocolate river, 49 



Chonetes 65,77,84,85 



Michignnensis, 87 



SmUJiii, 119 



■Christiancy, Hon. I. P., aid received 



from,....: 32,64 



Christiancy 's Quarry, 64, 66, 67 



Cincinnati, Geological position of, 44, 64 



Cfadopora sp ? 105 



Clark, George, aid received from, 22 



Clark, Hiss Mary, Botanical information 



from, 37,246 



Cliff Limestone, 5? 



Clinton Co. , 114 



Clinton Group, 54,63 



v 47l^mmia i 75, 80, 82, 86, 87 



Coal, reported on by Dr. Houghton and 



assistants 89 



Coal, divided into " Upper" and "Lower" 



by Dr. Houghton and assistants, 89 



Coal, misguided explorations for, 23, 177 



In the Huron Group, 74 



hints on the search for, 157 



qualities of, at Woodvillo mine, .116, 161 



at Barry , 117, 159 



at Corunna, 122, 161 



ovidences of proximity to, 130, 157 



prices of, at Barry, 159 



operations for, at Wbodville, 159, 160 



at Corunna, 161 



consumption of, in Mich. , 162 



'Coal, Cannel, analysis of, 159 



■Coal Creek, Eaton Co. , 121 



Coal Measures, description of in Mich.,. .. 114 



contain brine, 97 



geographical extent of, 114 



PAGH. 



Coal Measures, general section of, 125 



never continuous from Ohio to Mich., .136 



thickness of, , 16S 



Coke, from Michigan coal, 116,161 



from Peat, 196 



Cold water, Branch Co., 76, 7T 



Conglomerate of L. Superior, 16 



on Sulphur I., 60 



at base of Helder berg Group, 60 



at base of Marshall Group, 80 



ComfercB, 68,296 



Copper Bay, 62 



Copper, Native, Geological position of,. 49, 80 



found in Marshall Sandstone, 80 



Copper Ores, Geological position of, 49 



Corunna, Shiawassee Co. , 122, 135 



See, also, "Coal." 



Cosdnium, 106 



County Surveyors, Circular to, 28 



Crawford's Marble Quarry, 61, 63, 64, 68 



Crawford, Thomas, aid received from,,.. 33 



Oryptoceras, 86 



Cummins, James, 06 



Currier, A. O., aid received from, 32 



Cuyahoga river, Ohio, 78 



Oya^uxrimda^ 60 



Cyathophyttidce, 69, 64, 69, 101, 102 



OycUhophyUum fungiteSj 103 



sp? 104 



Cypricardites ventricosus, 62 



sp? 62 



Cyprinoid shells in Marshall Sandstone,. . 80 



Oyrtia y 05 



Cyrtoceras, 86 



Cylkerina, 36 



Dalmanniks caZKeep&aius, 82 



Dead Creek, Iosco Co., 06 



De Camp, Dr., aid received from, 32 



Deep boring for coal, statistics of, 161 



Deer Creek, Ottawa Co., 84 



Delta, Eaton Co. , 124 



Denudation of strata, 41 



Deposition of strata 41 



Depositories of specimens of the survey , . . 86 

 Descriptions of new species of sheila,. 238, 240 



Detroit, Huron Group at, 70 



Depth of Drift at, 120 



Artesian well at, ..146 



Detroit and Milwaukee Railway Co., coal 



mining of, ...122 



Devonian System 60 



Dickinson's Quarry, 64, 66 



*' { Diluviums," *. 12 



Dip of strata, what and bow caused, 43 



Dislocation, at Mackinac, 61 



at Pt. aux Barques Light-house, 76 



Disturbance of strata, 41 



Dodge, Mr. , Zoological Assistant 1859,. ... 25 



Dog Tooth Spar, 66 



Dolomite of Drummond's I., i56 



Douglass, C. C, Assistant State Geo'ogist, 7 



Drift Forces, continuity of, ..128 



Drift materials and phenomena, ... 127 



Drift, modified , 129 



Drummond's I., 63,66 



E. 



Eastmanville, Ottawa Co. , 84 



East Saginaw, Salt explorations at, 24 



Depth of Drift at, 129 



East Saginaw Salt Wells,. . . .90, 102, 114* 124 



Communication on geology of,, 25 



Statistics of, .162 



Eaton Co. , Ot , U! 



