BIBLIOGRAPHY

Only the principal works consulted and found to contain valid contributions to the solution of the problem of the earth's interior.

• BALL, SIR ROBERT STOWELL, LL. D., F. R. S., Lowndean Professor of Astronomy in the University of Cambridge. A Popular Guide to the Heavens. New York. D. Van Nostrand Company. 1904.

• BARRINGTON, THE HON. D. AND COLONEL BEAUFOY, F. R. S., The Possibility of Approaching the North Pole Asserted. New York. James Eastburn & Company. 1818.

• BRUCE, WILLIAM S., LL.D., F. R. S. E. Polar Exploration. New York. Henry Holt and Company. 1911.

• BUEL, J. W. The World's Wonders as Seen by the Great Tropical and Polar Explorers. St. Louis, Mo., and Philadelphia, Pa., Historical Publishing Company. 1884.

• CHAMBERLAIN, THOMAS CHROWDER, head of the department of geology, the University of Chicago. The Origin of the Earth. Chicago. University of Chicago Press. 1916.

• CHAMBERS, GEORGE F., F. R. A. S. Stories of the Universe: the Stars. New York, Review of Reviews Company. 1909.

• COOK, DR. FREDERICK A., My Attainment of the Pole. New York and London, Mitchell Kennerley. 1913.

• DAVENPORT, HENRY, D.D., Earth, Sea and Sky or the Marvels of the Universe.

• DENOVAN, WILLIAM, Editor, (author of "The Laws of Nature") Story of the World's Wonders. 1897.

• DICK, HERMAN, A. AL, The Marvellous Wonders of the Polar World. Richmond, Va., B. F. Johnson & Co.

• EDWARDS, DELTUS. M., The Toll of the Arctic Seas. New York, Henry Holt & Company. 1910.

• FLAMMARION, CAMILLE, translated from the French and edited by James Glaisher, F. R. S., The Atmosphere. New York, Harper & Brothers. 1873.

• GIBSON, CHARLES, F. R. S. E., The Romance of Scientific Discovery. London, Seeley Service & Co. 1914.

• GIBSON, CHARLES, F. R. S. E., The Great Ball on Which We Live. London, Seeley Service & Co. 1915.

• GORDON, W. J., Round About the North Pole. New York., E P. Dutton & Company. 1907.

• GREELY, ADOLPHUS W., Three Years of Arctic Service, An Account of the Lady Franklin Bay Expedition of 1881-1884 and the Attainment of the Farthest North. New York. Charles Scribner's Sons. 1886.

• GREW, EDWIN SHARPE, M. A., The Growth of a Planet. New York. The Macmillan Company. 1911.

• GREW, E. S., M. A., editor of "Knowledge." The Romance of Geology. London. Seeley & Co. 1911.

• HAYES, DR. I.I., The Open Polar Sea: a Narrative of a Voyage of Discovery Towards the North Pole in the Schooner United States. New York. Hurd & Houghton. 1867.

• KANE, ELISHA KENT, M. D., U. S. N. Arctic Explorations in the Years 1853-54-55. Philadelphia. J. B. Lippincott & Company. 1856.

• KANE, ELISHA KENT, M.D., U. S. N., Arctic Explorations in Search of Sir John Franklin. 1853-54-55. Philadelphia. J. B. Lippincott & Company. 1856.

• LE CONTE, JOSEPH. Elements of Geology. New York. D. Appleton & Company. 1909.

• NORDENSKIOLD, DR. N. OTTO G. and DR. JOHANN GUNNAR ANDERSON, Antarctic: or Two Years Amongst the Ice of the South Pole. London, Hurst & Blacket. New York, The Macmillan Company. 1905.

• NORDENSKIOLD, ADOLF ERIK, The Arctic Voyage of 1858-1879. London, Macmillan & Company. 1879.

• PAYER, JULIUS, one of the commanders of the expedition, New Lands Within the Arctic Circle. New York. A. Appleton & Company. 1877.

• PHIN, JOHN, The Seven Follies of Science, a Popular Account of the Most Famous Scientific Impossibilities. New York. D. Van Nostrand Company. 1912.

• POUCHET, F. A., M. D., The Universe or the Infinitely Great and the Infinitely Little. Charles Scribner & Co. 1870.

• PROCTOR, RICHARD A., Our Place Among Infinities: A Series of Essays Contrasting Our Little Abode in Space and Time With the Infinities Around Us. New York. D. Appleton & Company. 1881.

• PROCTOR, RICHARD A., B. A. Camb. F. R. A. S., Light Science for Leisure Hours. New York. D. Appleton & Company. 1871.

• PROCTOR, RICHARD A., The Poetry of Astronomy. London. Longmans, Green & Co. 1880.

• RECLUS, ELISEE. The Earth: A Descriptive History of the Life of the Globe. New York. Harper & Brothers. 1872.

• SARGENT, EPES. Perils and Escapes Among Icebergs: the Wonders of the Arctic World: A History of All the Researches and Discoveries in the Frozen Regions of the North From the Earliest Times. Philadelphia, John E. Potter & Company. 1873.

• SCOTT, O. FIRTH, The Romance of Polar Exploration. London. Seeley Service & Co. 1915.

• LOWELL, PERCIVAL, A. B., LL. B. Mars. Boston and New York. Houghton Mifflin Company. 1894.

• LOWELL, PERCIVAL. Mars as the Abode of Life. New York. The Macmillan Company. 1910.

• LOWELL, PERCIVAL. The Evolution of Worlds. New York. The Macmillan Company. 1910.

• MCCLINTOCK, CAPTAIN, R. N., LL.D. A Narrative of the Discovery of the Fate of Sir John Franklin and His Companions. New York. J. T. Lloyd. 1860.

• MACPHERSON, HECTOR, JR. The Romance of Modern Astronomy. London. Seeley, Service & Co. 1913.

• MAUNDER, E. WALTER. F. R. A. S., Superintendent of the Solar Department, Royal Greenwich Observatory. Are the Planets Inhabited? London and New York. Harper & Brothers. 1913.

• MELVILLE, GEORGE 'W., Chief Engineer, U. S. N. A Narrative of the Search for Lieutenant-Commander De Long, Followed by an Account of the Greely Relief Expedition. Boston. Hough-ton Mifflin Company. 1892.

• MILLER, HON. J. MARTIN, editor. Discovery of the North Pole: Dr. Frederick Cook's Own Story of How He Reached the North Pole, April 21, 1908, and the Story of Commander Peary's Discovery of April 6, 1909. 1909.

• MITCHELL, O. M., LL.D. Director of the Cincinnati and Dudley Observatories. A Concise Elementary Treatise on the Sun, Planets, Satellites, and Comets. New York, Phinney, Blakeman & Mason. 1860.

• MORSE, EDWARD S., Member National Academy of Science. Mars and Its Mystery. Boston. Little, Brown & Co. 1906.

• MOULTON, FORREST RAY, A. B., Ph. D. Professor of Astronomy at the University of Chicago. Descriptive Astronomy. Chicago. American School of Correspondence. 1912.

• MOULTON, F. R. An Introduction to Astronomy. New York. The Macmillan Company. 1906.

• NANSEN, FRIDTJOF, G. C. V. O., D. Sc., D. C. L., Ph. D. Professor of Oceanography in the University of Christiana, etc. In Northern Mists, Arctic Exploration in Early Times. 2 vols. London. William Heinemann. 1911.

• NANSEN, FRIDTJOF, The First Crossing of Greenland. 2 vols. London. Longmans, Green & Co. 1890.

• NANSEN, DR. FRIDTJOF, Farthest North: Being the Record of a Voyage of Exploration of the Ship Fram 1893-1896 and of a Fifteen Months Sleigh Journey by Dr. Nansen and Lieut. Johnson. 2 vols. New York and London. Harper & Brothers. 1898.

• NANSEN, DR. FRIDTJOF, Farthest North. 2 vols. New York and London. Harper & Brothers. 1879.

• NEWCOMB, SIMON, L. L. D., Superintendent American Nautical Almanac. Popular Astronomy. New York. Harper & Brothers. 1882.

• NEWCOMB, SIMON, LL. D., Astronomy for High Schools and Colleges. New York. Henry Holt & Company. 1883.

• NEWCOMB, SIMON, LL. D., Professor of U. S. Naval Observatory. Popular Astronomy. Harper & Brothers. 1879.

• SENN, DR. NICHOLAS, M. D., Ph. D., C. M., In the Heart of the Arctics. Chicago. W. B. Conkey Company. 1907.

• SERVISS, GARRETT P., Curiosities of the Sky: A Popular Presentation of the Great Riddles and Mysteries of Astronomy. New York and London. Harper & Brothers. 1909.

• STEFANSSON, VILHJALMER, My Life With the Eskimo. New York. The Macmillan Company. 1913.

• Symmes' Theory of Concentric Spheres, by A Citizen of the United States. Morgan Lodge & Fisher. 1826.

• TODD, DAVID, M. A., Ph. D., New Astronomy. New York and Chicago. American Book Company. 1897.

• WILLIAMS, HENRY, Editor and compiler, Curious Facts Relating to Almost Anything Under the Sun. New York. A. L. Burt Company. 1903.

PERIODICALS

• Scientific American, published by Munn & Co., New York.

• Scientific American Supplement. Munn & Co., New York.