206 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1932 



Chambebun, T. C. 



1922. The age of the earth from the geological viewpoint. Proc. Amer. 

 Philos. Soc, vol. 61, pp. 266-270. 

 Clakke, F. W. 



1924. The data of geochemistry. U. S. Geol. Suvv. Bull. 770, 5th ed., 

 pp. 150-155. 



Hendricks, R. W. 



1927. Analysis of the precipitation of rain and snow at Mount Vernon, 

 Iowa. Monthly Weather Rev., vol. 55, p. 363. Also personal com- 

 munication. 



Holland, T. H. 



1914. Discussion on the physiography of arid lauds. Rep. British Assoc. 

 Adv. Sci., pp. 383-371. 



JOLY, .7. 



1899. An estimate of the geological age of the earth. Sci. Trans. Roy. 

 Dublin Soc, ser. 2, vol. 7, pp. 23-66. 

 Lane, A. C. 



1929. The earth's age by sodium accumulation. Amer. Journ. Sci., ser. 5, 

 vol. 17, pp. 342-346. 

 Leith, C. K., and MeiVd, W. J. 



1915. Metamorphic geology, p. 73. 

 Mackie, William. 



1903. The saltncss of the sea in relation to the geological age of the 

 earth. Edinburgli Geol. Soc, vol. 8, pt. 2, pp. 240-255. 

 Peck, E. L. 



1917. Chem. News, vol. 116, p. 283. 

 Spencer, E. 



1925. Albite aud other authigenic minerals in limestone from Bengal. 

 Mineralog. Mag., vol. 20, pp. 365-387. 



Stbemme, H. 



1922. Die Verwenduug der Ikuischanalyse.i klastisclien Gosteine zu geo- 

 logischen Vergleiehen unter besonderer Beriicksichtigung des Buntsand- 

 steins. Zeitschr. Deutsch. Geol. Ges. B Monatsber., vol. 74, pp. 276-291. 



ZiES, E. G. 



1928. The acid gases contributed to the sea duriug volcanic activity. 

 Journ. Washington Acad. Sci., vol. 18, pp. 511-512. 



