0EO~CUM 



109 



CroU (James). On the opinion that the Southern Hemisphere loses 

 by E-adiation more heat than the Northern, and the supposed 

 influence that this has on Climate. (Tract.) 



8vo. London, 1869. 

 On the Physical Cause of the Motion of Glaciers. (Tract.) 



8vo. London, 1869. 



On two Eiver-channels buried under Drift, belonging to a period 

 when the land stood several hundred feet higher than at present. 

 (Tract.) 8vo. Edinburgh; 1870. 



The Boulder-clay of Caithness, a product of Land-ice. (Tract.) 



8vo. London, 1870. 

 The Cause of the Motion of Griaciers. (Tract.) 



8vo. London, 1870. 



On Ocean-currents. — Parts I.-III. (Tracts.) 2 copies of Parts 

 I. & III. 8vo. London, 1870-71. 



A Supplementary Letter. (Tract.) 8vo. London, 1874. 



On the Mean Thickness of the Sedimentary Eocks of the Globe. 

 (Tract.) 8vo. London, 1871. 



On the Transport of the "Wastdale Crag Blocks. (Tract.) 



8vo. London, 1871. 



What determines Molecular Motion ? — The Fundamental Problem 

 of Nature. (Tract.) 8vo. London, 1872. 



Climate and Time in their geological relations. 



8vo. London, 1875. 

 Mr. Hill on the cause of the Glacial Epoch. (Tract.) 



8vo. London, 1880. 



Cronstedt (Axel Predric). An Essay towards a System of Mineralogy, 

 translated from the Swedish, with notes, by Gustav von Engestrom. 

 The whole revised by Emanuel Mendes da Costa. 



8vo. London, 1770. 



Crosby (W. 0.). Eeport on the Geological Map of Massachusetts pre- 

 pared by W. O. C. (Tract.) 8vo. Boston, 1876. 

 Crosse (H.). See AjS"gas (George French). 



and Fischer (P.). Etude sur la machoire et I'armature linguale 



des Cylindrellidse, etc. (Tract.) 8vo. Paris, 1870. 



Crosskey (Henry William). See Brady (George Stewardson). 



Criiger (Herman). On the Meteorology of Trinidad. With an Obituary 

 Notice of the Author by Alexander Williams Anderson. (Tract.) 



8vo. Trinidad, 1864. 



CuUen (Edmund). See Beegmat^ (Torbern). 



Cumberland (George). Eeliquise Conservatao. 8vo. Bristol, 1826. 



. On the Black Eock at Bristol. (Tract.) MS. 



Cumming (J.). On the Application of Magnetism as a Measure of Elec- 

 tricity. (Tract.) 4to. Cambridge, 1821. 



. On the Connexion of Galvanism and Magnetism (Tract.). 



4to. Cambridge, 182]. 



— . On the Development of Electro-magnetism by Heat. (Tract.) 



4to. Cambridge, 1823. 



dimming' (Joseph George). The Isle of Man ; its history, physical, eccle- 

 siastical, civil, and legendary. 8vo. London, 1848. 

 . A Guide to the Isle of Man. 8vo. London, 1861. 



