INDEX. 



335 



PACK. 



Michigan Salt Group, thickness of, in Jack- 

 eon Co., 116 



thickness of, further north, 163 



remarks on, 138 



Middle I. , L. Huron, 62. 64 



Midland Co., J 114 



Milwaukee, Wis. 68 



Mineral character of Plutonic, Volcanic 



and Azoic rocks, 48, 49 



Mineral Faint, of Ohio, 78 



. of Miohigan, 162 



Mineral springs, 204, 205 



Missaukee Co 87 



Missionaries, explorations of, along L. Sup. 6 

 Mottusca, Catalogue of, 236 



Notes on, , 238, 240 



HOnguagon, Wayne Co. 64 



Monroe Co., 68 



Montcalm Co., 114 



Montgomery's Quarry, Monroe Co. , 68 



Jfonttculipora, 105 



Montreal Channel, 62 



Montreal R 47,48,60 



lion t rose , Sagina w Co., 120 



Mosa, C. W 72 



Moscow, Hillsdale Co., 84 



' Mt. Morris, Genesee Co 118 



Uucqua, L., 72,77 



Mai r, W. K. , (Sept.,) communication to 



on coal at Corunna, 27 



aid received from 33 



Mnnnusco Bay,.... 65 



Bfurchisoniabicinda, 52 



sp? 62,65 



Muskegon Rapids 88 



Myalina, 85 



lamdlosa, IIP 



IN". 



Naphtha from peat, 196 



Napoleon, Jackson Co.', 89 



Napoleon Group, description of, 88 



characters of, Obscure in Huron Co.,. 89 



economical uses of , 89 



thickness of, at " deep boring," 116 



distribution of, 90 



Bottom Clayof 90 



thickness of, 163 



Napoleon Sandstone, compared with Ohio 



Conglomerate, .. . ... 90 



contains brine,. ' 97 



iVautaus, 87 



Neebish Rapids 50 



Newaygo Co., 85,87,98 



Newberry,Prof. J. S.,aid rec'dfrom,..31,78 



Newton, Calhoun Co., 76 



Niagara Group, 55 



Niagara Limestone, description of, 55 



composition of 56 



distribution of, 57 



Noe's Well, Jonesville, 83 



Noquot, Little Bay de, 63 



Noquet.Big Bay de 63 



North I., Saginaw Bay, 100 



No tes , on Mammals , 221 



on Birds,... 231 



' on Reptiles 232 



on Molluscs, 238,240 



Notes, Dr. Houghton's, amount of lost,.. 11 



publication of, 21 



Notes, system of registering 30 



5&, :- .80,84,85,110 



/Vwcwto Uimghloni 87 



O. 



Oakland Co., 73,83,97 



43 



HOB. 



Oak trees, 293 



Oceana Co., 8& 



Ochre Beds 162 



Ogemaw Co 97 



Oil, Mineral. See " Petroleum." 



Old British Fort, Dr urnmond 's I. 65 



Old Fort Holmes, 61 



Onondaga Salines 188, 190 



Onondaga Salt Group, description of, 57 



geographical extent of, 58 



economical importance of........... 69 



perhaps sallferous in Mice., 69,177 



Oolitic limestone, Mackinac I., 62 



in Monroe Co., 63 



Organization of Survey and Flan of Ope- 

 rations, 21 



Or jskany Sandstone, 60 



Ornamental Plants. See " Plants." 



Orthis, 52,84,86,107 



bcllirugosa, 62 



trisenaria, 62 



umbraculum, 107 



Sp? 62,84 



Orthocerai, 86,81 



aneVrnn, 52 



sp? 84 



Ottawa Co., 84 



Ottawa Lake, 59,65 



Ottawa R., 9fi 



Otter Creek, 69 



Ott, George, information from, 123 



Owssso, Shiawassee Co., 122, 125, 126 



Paints, materials for, 162 



Paraffinefrom peat, 196 



Parallelism of Michigan and New York 



formations 16 



Paris, Kent Co., 98 



Parma, Jackson Co., 98,112 



Parma Sandstone, 112,116, 117 



thickness of, 153 



Parties, Geological, Zoological and Botani- 

 cal, united in 1860, 26 



Partridge Pt., Thunder Bay, 69, 71, 79 



Pafiton, Mr,, explorations of, for coal, 120 



Peat, agricultural properties of, 132, 193 



how prepared for use, 194 



used for fuel, 194 



for other purposes 195 



Peat Deposites, how produced 131 



PcnUvmerus, ...' 66 



(t Pentamerus Portion of Upper Lime- 

 rock,"....... 15 



P&dremilcs, 69 



Petroleum, in Canada West 73 



in Ohio, 73,78 



in Mich., 73,189 



Pettibone, S-, communication from, 29 



Phacops iyafo, 64 



PhiUipsia, 110 



Physa in Modified Drift, 130 



Physical Geography 207 



Pigeon R., 97 



Pilot Knob, Mo., 49 



Pine Lake ,72 



Pine trees 286 



Pipestone, 100, Note. 



Pirate Harbor, Drummond's I. , 63 



Plan of operations, for 1869, 22 



for 1860 '. 26 



Pl/tnwbis tnmcatw, description of, 238 



Plants, Catalogue of, 147 



general remarks on, 319 



■ distribution of. 324 



useful in medicine 321 



