(1) (p. 25). William Herschel, Phil. Trans. for 1783, vol. LXXIII. (2) (p. 30). Kant's Cosmogony, ed. and trans. by W. Hartie, D.D., Glasgow, 900, pp. 74-81. (3) (p. 39). Exposition du systeme du monde (included in oeuvres Completes), by M. le Marquis de Laplace, vol. VI., p. 498. (4) (p. 48). From The Scientific Papers of J. Clerk-Maxwell, edited by W. D. Nevin, M.A. (2 vols.), vol. I., pp. 372-374. This is a reprint of Clerk-Maxwell's prize paper of 1859. CHAPTER III THE NEW SCIENCE OF PALEONTOLOGY (1) (p. 81). Baron de Cuvier, Theory of the Earth, New York, 1818, p. 98. (2) (p. 88). Charles Lyell, Principles of Geology (4 vols.), London, 1834. (p. 92). Ibid., vol. III., pp. 596-598. (4) (p. 100). Hugh Falconer, in Paleontological Memoirs, vol. II., p. 596. (5) (p. 101). Ibid., p. 598. (6) (p. 102). Ibid., p. 599. (7) (p. 111). Fossil Horses in America (reprinted from American Naturalist, vol. VIII., May, 1874), by O. C. Marsh, pp. 288, 289. CHAPTER IV THE ORIGIN AND DEVELOPMENT OF MODERN GEOLOGY (1) (p. 123). James Hutton, from Transactions of the Royal Society of Edinburgh, 1788, vol. I., p. 214. A paper on the "Theory of the Earth," read before the Society in 1781. (2) (p. 128). Ibid., p. 216. (3) (p. 139). Consideration on Volcanoes, by G. Poulett Scrope, Esq., pp. 228-234. (4) (p. 153). L. Agassiz, Etudes sur les glaciers, Neufchatel, 1840, p. 240. CHAPTER V THE NEW SCIENCE OF METEOROLOGY (1) (p. 182). Theory of Rain, by James Hutton, in Transactions of the Royal Society of Edinburgh, 1788, vol. 1, pp. 53-56. (2) (p. 191). Essay on Dew, by W. C. Wells, M.D., F.R.S., London, 1818, pp. 124 f. CHAPTER VI MODERN THEORIES OF HEAT AND LIGHT (1) (p. 215). Essays Political, Economical, and Philosophical, by Benjamin Thompson, Count of Rumford (2 vols.), Vol. II., pp. 470-493, London; T. Cadell, Jr., and W. Davies, 1797. (2) (p. 220). Thomas Young, Phil. Trans., 1802, p. 35. (3) (p. 223). Ibid., p. 36. CHAPTER VII THE MODERN DEVELOPMENT OF ELECTRICITY AND MAGNETISM (1) (p. 235). Davy's paper before Royal Institution, 1810. (2) (p. 238). Hans Christian Oersted, Experiments with the Effects of the Electric Current on the Magnetic Needle, 1815. (3) (p. 243). On the Induction of Electric Currents, by Michael Faraday, F.R.S., Phil. Trans. of Royal Society of London for 1832, pp. 126-128. (4) (p. 245). Explication of Arago's Magnetic Phenomena, by Michael Faraday, F.R.S., Phil. Trans. Royal Society of London for 1832, pp. 146-149. CHAPTER VIII THE CONSERVATION OF ENERGY (1) (p. 267). The Forces of Inorganic Nature, a paper by Dr. Julius Robert Mayer, Liebig's Annalen, 1842. (2) (p. 272). On the Calorific Effects of Magneto-Electricity and the Mechanical Value of Heat, by J. P. Joule, in Report of the British Association for the Advancement of Science, vol. XII., p. 33. CHAPTER IX THE ETHER AND PONDERABLE MATTER