A LIST OF SOURCES 



HERSCHEL, WILLIAM. See vol. iii., p. 20 ff. 



On the Proper Motion of the Solar System, Phil. Trans., 

 vol. 73, for 1783. (This paper was read in March, 1783.) 

 The Constitution of the Heavens, Phil. Trans, for 1785, 

 vol. 75, p. 213. 

 HOWARD, LUKE. See vol. iii., p. 182. 



Philosophical Magazine, 1803. 

 HUMBOLDT, ALEXANDER VON. See vol. iii., p. 192. 



Des lignes isothermes et de la distribution de la cha- 

 leur sur le globe, published in vol. iii., of Memoires 

 de physique et de chimie de la Societe d'Arcueil, Paris, 

 1819. 

 HUTTON, JAMES. See vol. iii., p. 178. 



Theory of Rain, in Transactions of the Royal Society 

 of Edinburgh, 1788, vol. i., pp. 53-56. See vol. iii., p. 121. 

 From Transactions of the Royal Society of Edinburgh, 

 1788, vol. i., pp. 214-304. A paper on the "Theory of 

 the Earth," read before the society in 1781. 



KANT, IMMANUEL (1724-1804). See vol. iii., p. 27. 



Allgemeine Naturgeschichte und Theorie des Himmels, 

 I 75S- Cosmogony, ed. and trans, by W. Hartie, D.D., 

 Glasgow, 1900. 



LAPLACE, M. LE MARQUIS DE. See vol. iii., p. 32. 



Exposition du systeme du monde, Paris, 1 796, is available 

 in CEuvres completes, in 12 vols., Paris, 1825-1833, vol. vi., 

 p. 498. 

 LYELL, CHARLES. See vol. iii., p. 88. 



Principles of Geology, 4 vols., London, 1834. 



MARSH, O. C. See vol. iii., p. 107. 



Fossil Horses in America (reprinted from American 

 Naturalist, vol^viii., May, 1874), pp. 288, 289. 



PLAYFAIR, JOHN. See vol. iii., pp. 131, 165. 



Illustrations of the Huttonian Theory, 1802. 



SCROPE, G. POULETT. See vol. iii., p. 132. 



Consideration of Volcanoes, London, 1823, pp. 228- 

 234- 



2 53 



