+Temperature, Waste, and Drainage+ 273 The winter wave, 274. The summer wave, 276. The temperature of the bottom, 276. Temperature of the interior of the ice, 277. Compression and friction as causes of heat, 278. Summary, 279. Movement under low temperature, 279. Evaporation, 279. Drainage, 280. +The Work of Glaciers+ 281 _Erosion and Transportation_ 281 Getting load, 282. Conditions influencing rate of erosion, 283. Summary, 286. Varied nature of glacial débris, 286. The topographic effects of glacial erosion, 287. Fiords, 290. The positions in which débris is carried, 290. Transfers of load, 292. Wear of drift in transit, 298. _Deposition of the Drift_ 298 Beneath the body of the ice, 298. At ends and edges of glaciers, 299. +Types of Moraines+ 301 The terminal moraine, 301. The ground moraine, 301. The lateral moraines, 302. Distinctive nature of glacial deposits, 304. Glaciated rock surfaces, 304. +Glacio-Fluvial Work+ 305 +Icebergs+ 307 +The Intimate Structure and the Movement of Glaciers+ 308 The growth and constitution of a glacier, 308. The arrangement of the crystal axes, 312. _The Probable Fundamental Element in Glacial Motion_ 313 Melting and freezing, 313. Accumulated motion in the terminal part of a glacier, 316. _Auxiliary Elements_ 317 Shearing, 317. High temperature and water, 318. Applications, 319. _Corroborative Phenomena_ 320 _Other Views of Glacier Motion_ 321 CHAPTER VI. THE WORK OF THE OCEAN. Volume and composition, 324. Topography of bed, 326. Distribution of marine life, 328. +Processes in Operation in the Sea+ 329 Diastrophism, 329. Vulcanism, 332. Gradation, 333. +Movements of the Sea-water+ 334 Differences in density and their results, 335. Differences in level and their results. 335. Movements generated by winds, 336. Movements generated by attraction, 322. Aperiodic movements, 338. Summary, 339. +Waves+ 339 Wave-motion, 339.