ON UNDERGROUND TEMPERATURE. 253 



the Secular Cooling of the Earth," in Trans. E. S. E., 1862, (reprinted at 

 the end of Thomson and Tait's " Treatise on Natural Philosophy ;") "The 

 Doctrine of Uniformity in Geology Briefly Eefuted,"in Proc. E. S, E., De- 

 cember, 1865; "On Geological Time," in Trans. Geol. Soc, Glasgow, vol. 

 Ill, part I ; " Of Geological Dynamics," in Trans. Geol. Soc, Glasgow, vol. 

 Ill, part II ; J. D. Everett " On a Method of Eeducing Observations of 

 Underground Temperature," in Trans. E. S. E., 1860; " On the Mean Tem- 

 perature of a Stratum of Soil," in Trans. E. S. E., 1862 ; " Eeduction of 

 the Observations of the Deep-sunk Thermometers," in Greenwich Ob- 

 servations, 1860 ; "Eeports of Committee on Eate of Increase of Under- 

 ground Temperature," in B. A. Eeports, from 1868 onward. 



