INDEX 



, TIGS. 



Aaphala, Catnlogoe of, 233 



Aoervularia Davidsoni 65 



sp? 69,102,104 



Acknowledgments of Aid received , 



32, 33, 34, 217, 238, 246 



Ada.Kent Co., 98 



Adirondacs, N. Y., 49 



Adrian, Lenawee Co. , 76 



Agate 66 



Agogcbic L. , 48 



Agricultural resources of Helderberg and 



Niagara Limestone regions, 68 



Agricultural uses of marl, 194 



of Peat. See "Peat."' 



Alga from L. Superior Sandstone 60 



Allegan Co 86 



AUorisma dlavata 100, 109 



sp? 100,101, 109,110 



Alluvions 12 



Altitudes of various points 207 



Ambonychia amygdoMna, 62 



n. Bp. 63 



Amethyst 66 



Analysis, of Cannel Coal, 159 



of Gypsum, from Grand Rapids, 163 



from Ohio, 163 



of Brine, from Scribner's well, 167 



from E. Saginaw, 171 



of various brines, (Table,) 186 



by Dr. Houghton, 187 



of well water 203 



of Detroit R. water, 204 



of Chalybeate water, 204 



Arehaoeidarii, 1 J* 



Archimedes, wanting in Mich ,111 



Architectural materials, of Clinton Group, 64 



of Niagara Group 67 



of Upper Held. Group, 67 



of Huron Group, 76 



of Marshall Group, 88 



of Napoleon Group 89 



Artesian well, at Detroit 69, 76, 143 



at Jackson, 118,161 



Artesian wells , Philosophy of , in Mich. , . . 200 



where practicable, 201 



Am/pluagigae, , 62 



Ash trees, ■"? 



Athens, Calhoun Co., 76 



AOyris niMomdZosa 107 



tiUjquadrala,, - 107 



Bp? 1J| 



Jtrma reticularis 66,69,70 



n. sp., *" 



sp?.- «» 



AoGrisRiver So 



Au Sable • 29 



Austin E. P. , Information from , 246 



A«s. JSee" Birds." 



AvkuXa 168 1 



FAGS 



Axes of elevation in the region geologi- 

 cally connected withMlch., 44 



Axes of elevation in the Upper Peninsula, 46 



Azoic System of rocks, 48 



B. 



Baldwin, E. E. , Assistance from, 246 



Ball, Clay & Co. See " Indian Mill Creelc 



Salt Well." 

 Ball, John, Communication from, on Kent 



Co. 28 



Balsam Fir, 296 



Bangor, Van Buren Co. 76 



Barry, Jackson Co. 113,117 



See, also/' Coal." 



Basswood, 254 



Batrachia, Catalogue of, 234 



Battle Creek, Calhoun Co. , 84, 8T 



Bay Co., 93,114 



Beaume's Hydrometer 179 



Bedford, Monroe Co. , 61 



BeUerqphtm, 85 



galeriadatus, 82. 



Urei, 87 



n. sp. 66 



Bellevue, Eaton Co. 98,99 



Benton, Eaton Co .- 121 



Big Rapids, Mecosta Co. 121 



Billings, E. , on the geology of Canada W. , 79 



Birch trees 294 



Birds , Catalogue of, 222 



Notes on, 231 



Bitumen, in rocks, ...66, 77 



from peat - 196 



Black, Bituminous Limestone, 69 



Slate ......16,71,77,79 



uses of 198 



Blackman, Jackson Co. 114 



Blossom's Quarry 122" 



Bohemian Range, 48 



Bois Blanc I., 68,61,68 



Borings, Deep, Tables of 143 



Botanical Report 24S 



Botany, neglected In 1859, 37 



Sources of information on, 37, 246 



of theLower Peninsula. See'Tlants." 



Boulders at bottom of Drift 129 



Bounty on salt 176 



Bouteller j F. P. , information from 199 



Boynton's Quarry 113 



Brachiopoda 63,69 



Branch Co. , , ... 76, 97 



Brecciated limestone, at Mackinac 61, 68 



in Monroe Co. 62 



Brest, Monroe Co., 66,127 



.Brine, its source from the gypseous rocks, 24 



Analyses of, 167,170,171 



Investigation of density of, 180 



Constant values relating to 180 



Table of equivalent expressions for H 

 strength of ,. 184 



