on the age of Niagara, 336. Lyons, 132. Maack, cited, 318. Macclesfield, England, 273. MacEnery, cited, 267. Machairodus, 270, 282. Mackintosh, quoted, 149, 150, 173. Mâcon, France, 369. McTarnahan, mortar discovered, by 297. Madison boulder, 71. Madisonville, Ohio, 232, 250, 254. Magdalena Bay, 13. Mahoning River, 220. Maine, 80; re-elevation of, 331. Malaspina Glacier, map of, 31. Mammoth, 188, 190, 263, 265, 269-272, 278, 280, 283-285, 287, 292, 293. Man, relics of, in the Glacial period, chapter on, 242-301; in glacial terraces of the United States, 242-262; of Europe, 262-267; in cave deposits of British Isles, 148, 267-274; of the Continent, 274-281; under lava-beds of the Pacific coast of North America, 294-301; extinct animals associated with, 281-293. Manitoba, 97. Mankato, Minn., 229. Marcilly, skull at, 279. Marietta, Ohio, 231. Marmot, 289, 293. Marsh Creek Valley, Utah, 233. Martigny, ancient glaciers near, 59, 60, 131, 211. Massachusetts, 67 _et seq._, 73, 77 _et seq._, 81, 344, 345. Mastodon, 262, 278, 285, 286. Mattmark See, 211. Maumee River, 220. McGee, cited, 245, 254 _et seq._ Medial moraines, formation of, 6; of Muir Glacier, 27; in Ohio, 100. Medlicott, cited, 312. Medora, Ind., 232, 251, 254. Menai Straits, 145. Mentone, skeleton of, 281. Mer de Glace, 11, 44. Merjelen See, 211, 241. Mersey, the, 140. Meteorites, 305. Metz, cited, 250. Meuse, valley of, 274 _et seq._ Miami, the Great, 204, 220. Miami, the Little, 231, 250. Millersburg, Ohio, 232. Mills, cited, 251. Minneapolis, 232; buried outlet near, 208; recession of falls at, 210, 340 _et seq._, 364. Minnehaha, Falls of, 342. Minnesota, 101, 107, 252 _et seq._; lakes of, 344. Minnesota River, a glacial outlet, 208, 225, 228, 342. Miocene epoch, animals of the, 285. Mississippi River, gorge of, at Fort Snelling, 208, 364; terraces on, 229; erosion by, 329; glacial drainage of, 335, 340. Missouri Coteau, 101, 126, 228. Missouri, 96, 98, 119. Moel Tryfaen, 145, 167 _et seq._, 178, 273. Mohawk River, glacial drainage of, 92, 202, 335; ice-dam across, 220, 334, 335. Mohegan Bock, 71; view of, 72. Monongahela River, 214 _et seq._ Montaigle, valley of the, 279. Montana, 96. Montreal, re-elevation of, 331. Moose, 262. Moraines, formation of, 6; in Wisconsin, 98-100; in Italy, 134, 135; between Speeton and Flamborough, 156; in Germany, 183. Morecambe Bay, 146, 180. Morgantown, W. Va., 215. Morlot, cited, 354. Mortillet, cited, 366, 369, 372. Morvan, the, 136. Moulins, formation of, 7. Mount Shasta, 21. Mount Washington, 61. Mueller Glacier, 17. Muir Glacier, 24 _et seq._. 47, 68, 212; view of front of, 26. Muir, John, 24. Muskingum River, 220, 231. Musk ox, 262, 280. Musk sheep, 289, 290, 293.