INDEX 



319 



Lower White Banks, section at, 156. 

 Lowest observed temperatures, 



table, 255. 

 Lumber production, possibilities of, 



302. 

 Lyell, Chas., 53. 



M. 



Maclure, Wm, 37, 49, 50. 



Mac Farlane, J. R., 58. 



Magnesia, 97. 



Magnetic declination, 289. 



Magnetic stations, description of, 

 289. 



Marcou, X, 39, 43, 53. 



Marple, M., farm of, 167. 



Marsh, O. C, 43, 175. 



Martenet, Simon J., 36. 



Martin, G. C, 45, 62. 



Maryland Clay Co., 212. 



Maryland Geological Survey, 61, 62. 



Maryland State Weather Service, 

 59. 



Mason & Dixon's line, 34. 



Matawan formation, 149, 158. 



Mather, E., 275. 



Mathews, E. B., 20, 29, 32, 41, 61, 

 84, 195, 198. 



Maulden mountain, 27, 66, 156, 157, 

 158, 159, 166, 210. 



McClenahan, E. D., 197. 



McClenahan Granite Co., 203. 



McCormick, Jas. O., 249. 



McCullough Iron Co., 220. 



McGee, W J, 42, 43, 45, 46, 47, 56, 

 57, 58, 169. 



McKinneytown, 211. 



McKinseys Mill, 128. 



Mean monthly and annual tempera- 

 ture, table, 253. 



Mechanics Valley, 99, 216. 



Megredy, Daniel, 197. 



Meridian line, description of, 290. 



Meridian line, instructions for us- 

 ing, 290. 



Merrill, G. P., 58, 61, 237. 



Meta-gabbro, 92, 93, 121, 140. 



Meta-peridotites, described, 93. 



Meta-pyroxenites, described, 93, 100. 



Meta-rhyolites, 98, 136. 



Mica-gneiss, age of, 103, 108. 



Mica-gneiss, chemical analyses of, 

 116. 



Mica-gneiss, described, 88. 



Mica-gneiss, petrography of, 113. 



Micro-granitic dikes, 139. 

 Micro-granitic dikes, analysis of, 



140. 

 Middle Neck, 239. 

 Miller, B. L., 31, 151. 

 Miller, P. R., 295. 

 Mineral resources, 195. 

 Mitchell, Samuel L., 50. 

 Monthly discharge of Susquehanna 



river, 282, 283, 286, 287. 

 Monmouth formation, 149, 159. 

 Monroe, Chas. E., 56. 

 Morton, Samuel G., 38, 50, 51. 

 Mount Pleasant, 238. 



Nagle, C. M., 275. 



Navesink marls discussed, 160. 



Navesink marls, fossils in, 161. 



Neocene in Cecil county, 165. 



Newark shale, 194. 



Newberry, J. S., Prof., 42. 



" Niggerheads," 233. 



Non-feldspathic rocks, 132. 



Norfolk sand discussed, 241. 



Norfolk sands, products of, 242. 



Norite, 92, 125. 



Norite, chemical analysis of, 128. 



Normal temperatures and depar- 

 tures therefrom, 252. 



Northeast, 87, 119, 152, 171, 182, 211, 

 212, 219. 



Northeast, analysis of clay from, 

 214. 



Northeast Creek, 28, 119. 



Northeast, kaolin at, 212. 



Northeast River, 34, 67. 



0. 



Oakwood, 94, 100, 113, 133. 



Octoraro Creek, 28, 34, 78, 86, 102, 

 111, 121, 127, 135, 218, 263, 265, 

 266, 272. 



Onion, Stephen, 220. 



Operators in Cecil county, list of, 

 225. 



Ordinary Point, 160. 



Origin of the streams of the Pied- 

 mont Plateau, 78. 



P. 



Page, Chas. G., 202. 

 Parmunkey group, 149. 

 Parke Bros., 220. 



