Pacific coast of America, 349. Pacific Ocean, 318, 320. Panama, Isthmus of, 113, 313, 314, 318. Parsimony, law of, 117. Pasterzen Glacier, 134. Patagonia, 1. Patton, 25. Payer, 14, 39. Peat-beds, 68, 125; in Ohio, 107; in Minnesota, 108; in valley of the Somme, 355 _et seq._ Pembina River, 228. Pengelly, cited, 267, 270. Pennine Chain, glaciation of, 137, 144, 146, 147, 154, 177. Pennsylvania, 57, 61, 84 _et seq._, 119, 217. Perry County, Ohio, 232. Perthes, Boucher de, 262 _et seq._ Philadelphia Academy of Sciences, 296. Philadelphia, red gravel of, 254 _et seq._ Phillips, cited, 267. Picardy, glacial gravels of, 262. Pittsburg, Pa., submergence of, 214, 217, 230. Plum Creek, Ohio, 344. Po, valley of the, 135; erosion by, 328. Pocatello, Idaho, 236, 299. Pocono Mountain, 61. Poland, 181. Polynesian skull, 276. Pomp's Pond, section of kettle-hole near, 345. Portageville, N. Y., 220. Port Neuf River, Idaho, 236. Portsmouth, Ohio, 231. Portugal, human relics in glacial terraces of, 264; supposed Tertiary man in, 367, 371 _et seq._ Post-glacial erosion, 332 _et seq._; in Ohio, 343, 344; in Illinois, 345 _et seq._ Potomac River, 256 _et seq._ Pot-holes in Lucerne, 133. Pouchet, cited, 263. Precession of equinoxes, 308. Preglacial climate in England, 141, 142. Preglacial levels in England, 139-142. Prestwich, cited, 186, 189, 263 _et seq._, 284; on date of Glacial period, 354, 357, 363, 364. Provo shore-line, 237. Putnam, cited, 250. Puy-Courny, France, supposed Tertiary man at, 367, 370, 371. Pyramid Lake, 350. Pyrenees, glaciers of the, 11, 136; Quaternary animals of, 280, 282; age of, 328. Quaternary animals of California, 281, 287; in Germany, 279; in Hungary, 279. Quatrefages, cited, 276. Queenston, Canada, 333 _et seq._