336 



INDEX. 



Ida, Monroe Co. , 58 



JUcenus, 52 



Indian Mill Creek Salt Well, . . .90, 93 



statistics of, 149, 169 



Ingham Co., 114 



Investigations to be undertaken by ex- 

 perts, 31 



Ionia Co. , 114, 121 



Ipperwash (Cape), 71, 72, 74 



Iron Mountain , Mo. , 49 



Iron Ores, magnetic and specular, of L. 



Superior, 49 



Kidney, 26,76 



Black Band, 115 



" Iron Region," reported on by Foster and 



Whitney, 16 



Isabella Co. , 114 



Isle Royale, 48 



«T. 



Jackson, Dr. C. T. , U. S. Geologist of L. 



Superior, 15 



Jackson City, 117,118,126 



Jackson City Coal Co., 117 



Jackson Co. , 84, 90, 97, 113, 114, 129, 132 



Jacobs, S. , Jr. , well of, 84 



Jesuit Missionaries, explorations of, 5 



Jewell, Dr., Zoological Assistant, 25 



Jonesville, Hillsdale Co., 84, 88 



K. 



Kalamazoo Co. , 84 



Kaskaskia Limestone in Mich. , Ill 



Kent Co., 90 



Kerr,Jno. A. , information from, 124 



Kettle Pt.,C. W. See "Ipperwash (Cape).-"' 



Keweenaw Pt. , 48 



" Kidney Iron Formation," 13 



L. 



Lake Co., 85, 97 



Lake Huron, Coast-trend of, 61 



Lake Ridges and Terraces , 129 



Lakes, Inland, origin of, 131 



Lakes, the great, general conformation of 



strata about, 44 



Lake Superior , explorations along, 5 



Land District of, organized, 15 



reported on by Foster and Whit- 

 ney, 15 



geological position of, 45 



Lake Superior Sandstone, 48, 49 



Lamont, Ottawa Co. , 84 



Lampblack from peat, 197 



Lansing, Ingham Co. , 120 



Lapeer Co., 83,97 



Lathrop, Dr. G. A., his connection with 



salt discoveries, 24 



aid received from, 32, 120 



Laurentian Series of Logan , 49 



Lawson, Jas. S., description of "Lake 



Terrace" by, 32 



Leda demsmammiUata, 87 



nueulceformis, 87 



Ledapandoraformis, 87 



Leelanaw Co. , 73 



Lenawee Co. , ,..". 76 



Leoni, Jackson Co. , 98 



Leonidas, St. Joseph Co. , 76 



Uperditiafabulites, 52 



Leptama mbtenta, 52 



Leroy, Calhoun Co., 76 



Liberty, Jackson Co. , 84 



Ldgnilites, 66 



Lignite, .130*198 



Limestone of L. Erie 14 



Linvstone, Corniferous, (See, also, "Up- 

 per Helderberg,") 13 



Thunder and Little Traverse Bay, 14 



Black Bituminous, (See, also, "Ham- 

 ilton Group,") 15 



Mackinac, (See, also, " Upper Helder- 

 berg,") 15 



Lingula, 116, 117,119,120 



Lithographic stones, 54 



Lithostrotion mammillare , 103 



longieonicum, 103 



Little Traverse Bay ,.. 63, 64, 66, 68, 69, 70, 77 



Livingston Co. , 114, 121 



Local catalogues of Plants. See " Plants." 



Lock , Ingham Co. , 121 



Lockport, N. Y., 57 



Logan, Sir William, on Azoic rocks, 49 



Long Lake, Presqu' Isle Co., 62 



" Lover's Leap," Mackinac, 60 



Lower Limerock of Houghton, 15 



Lower Peninsula of Mich., general strati- 

 graphical position of, 44 



Loxonema Boydii, 59 



Lucina, 85 



Lyons. Ionia Co. , 126 



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



statistics of, 145 



Machceracartlhus, , 64 



Machigamig R 48, 49 



Mackinac I.,...' 58, 60, 62, 64, 68, 128 



Macomb Co., 73, 83,132 



Maiden, Capt. , aid received from, 33, 72 



Mammals, Catalogue of, .' 219 



Notes on, 221 



Manistee Co. , ; 85 



Manitoulin Is. , . . . 57 



" Manitoulin portion of Upper Limerock," 15 



Marble, * 68 



Marblehead , Drummond's I. , 55, 56 



Marengo, Calhoun Co., 84 



Marl depbs ites , how produced , 131 



Marshall, Calhoun Co., 84 



Marshall Group, description of, 80 



distribution of, 82 



palaeontology of. 85 



fauna of, compared with that of Rhe- 

 nish Provinces, 87 



economical uses of, 88 



contains brine, 97 



thickness of, 153 



Mason Co. , 85 



Mastic from peat, 197 



Mastodon, 132 



Materials of Michigan rocks derived from 



theN 137 



Maumee R. , collections from , 22 



McArthur, Alex., coal mining of,. ..122,161 

 McReynolds & Stewart's plaster quarry,. . 91 



Meade, Capt. , aid ofTered by , 31 



Mecosta Co., 121 



Medicinal Plants. See " Plants." 



Medina Sandstone, 55, 80 



Melania in modified drift, 130 



Mendon , St. Joseph Co. , 76 



Menomonee R. , 49 



Merista, 65, 75 



Mwistella, 65 



Metallic ores of Mich. , list of, 155 



Mctamorphic rocks, 15 



Metcalf, Martin, aid received from,.. .32, 168 



Meteorology, 31,207 



Michigan Salt Group, description of, 91 



petrography of, 91 



distribution of.' 93 



