JAMES D. FORBES. Travels Through the Alps of Savoy and other Parts of the Pennine Chain with Observations on the Phenomena of Glaciers. Edinburgh, 1845, pp. 456, pls. 9, maps 2. A. PENCK, E. BRÜCKNER, et L. DU PASQUIER. Le système glaciare des alpes, etc., Bull. Soc. Sc. Nat. Neuchâtel, vol. 22, 1894, pp. 86. E. RICHTER. Die Gletscher der Ostalpen. Stuttgart, 1888, pp. 306, 7 maps. JAMES D. FORBES. Norway and Its Glaciers, etc. Edinburgh, 1853, pp. 349, pls. 10, map. I. C. RUSSELL. Existing Glaciers of the United States, 5th Ann. Rept. U. S. Geol. Surv., 1885, pp. 307-355, pls. 32-55; Glaciers of Mt. Ranier, 18th Ann. Rept. U. S. Geol. Surv., 1898, pp. 349-423, pls. 65-82. W. H. SHERZER. Glaciers of the Canadian Rockies and Selkirks, Smith. Cont. to Knowl. No. 1692, Washington, 1907, pp. 135, pls. 42. H. F. REID. Studies of Muir Glacier, Alaska, Nat. Geogr. Mag., vol. 4, 1892, pp. 19-84, pls. 1-16. I. C. RUSSELL. Malaspina Glacier, Jour. Geol., vol. 1, 1893, pp. 219-245. G. K. GILBERT. Harriman Alaska Expedition, vol. 3, Glaciers, 1904, pp. 231, pls. 37. W. M. CONWAY. Climbing and Exploration in the Karakoram Himalayas, Maps and Scientific Reports, 1894, map sheets I-II. FANNY BULLOCK WORKMAN and WILLIAM HUNTER WORKMAN. The Hispar Glacier, Geogr. Jour., vol. 35, 1910, pp. 105-132, 7 pls. and map. The cycle of glaciation:— WILLIAM H. HOBBS. The Cycle of Mountain Glaciation, Geogr. Jour., vol. 36, 1910, pp. 146-163, 268-284. Upper and lower cloud zones of the atmosphere:— R. ASSMANN, A. BERSON, and H. GROSS. Wissenschaftliche Luftfahrten ausgeführt vom deutschen Verein zur Förderung der Luftschiffahrt in Berlin, 1899-1900, 3 vols. E. GOLD and W. A. HARWOOD. The Present State of our Knowledge of the Upper Atmosphere as Obtained by the Use of Kites, Balloons, and Pilot-balloons, Rept. Brit. Assoc. Adv. Sci., 1909, pp. 1-55. W. H. MOORE. Descriptive Meteorology, Appleton, New York, 1910, pp. 95-136. WILLIAM H. HOBBS. The Pleistocene Glaciation of North America Viewed in the Light of our Knowledge of Existing Continental Glaciers, Bull. Am. Geogr. Soc., vol. 42, 1911, pp. 647-650. The continental glacier of Greenland:— F. NANSEN. The First Crossing of Greenland, 2 vols, Longmans, London, 1890 (the scientific results are contained in an appendix to volume 2, pp. 443-497). R. E. PEARY. A Reconnaissance of the Greenland Inland Ice, Jour. Am. Geogr. Soc., vol. 19, 1887, pp. 261-289; Journeys in North Greenland, Geogr. Jour., vol. 11, 1898, pp. 213-240. T. C. CHAMBERLIN. Glacier Studies in Greenland, Jour. Geol., vol. 2, 1894, pp. 649-668, 768-788, vol. 3, pp. 61-69, 198-218, 469-480, 565-582, 668-681, 833-843, vol. 4, pp. 582-592, 769-810, vol. 5, pp. 229-245; Recent glacial studies in Greenland (Presidential address), Bull. Geol. Soc. Am., vol. 6, 1895, pp. 199-220, pls. 3-10. R. S. TARR. The Margin of the Cornell Glacier, Am. Geol., vol. 20, 1897, pp. 139-156, pls. 6-12.