BIBLIOGRAPHY. 741 



"American Geologist," vol. xxxv, pp. 236-240; ''Rate of Lateral 

 Erosion at Niagara," ibid, vol. xxix, pp. 140-143; "Report of the 

 Boulder Committee of the Ohio State Academy of Sciences," '•Ohio 

 State Academy of Sciences," 2d An. Report, pp. 5-10; 3d An. Report, 

 pp. 6-7; "The Revision of Geological Time," "Bibliotheca Sacra," 

 vol. lx, pp. 578-582. 



