2 1 6 RECENT P UBLICA TIONS 



— Kahlenberg, Louis, and Azariah T. Lincoln. The Dissociative Power 



of Solvents. Journal of Physical Chemistry, Vol. Ill, No. i, January 

 1899. 



— Kahlenberg, Louis, and Oswald Schreiner. Die wasserigen Losun- 



gen der Seifen. Separat-Abdruck aus Zeitschrift fur physikaliche 

 chemie, XXVII. Leipzig, 1898. 



— Russell, I. C, Professor. Glaciers of Mount Ranier. Extract from 



the Eighteenth Annual Report of the U. S. Geological Survey, 1896-7. 

 Part II. Papers Chiefly of a Theoretic Nature. Washington, 1898. 



— Sardeson, F. W. What is the Loess ? American Journal of Science, 



Vol. VII, 1899. 



— Smith, William Sidney Tangier. A Geological Sketch of San Clem- 



ente Island. From the Eighteenth Annual Report of the U. S. Geolog- 

 ical Survey, 1896-7. Part II. Washington, 1898. 



— Todd, James E., State Geologist. South Dakota Geological Survey, 



Bulletin No. 2. First and Second Biennial Reports on the Geology of 

 South Dakota, with Accompanying Papers, 1895-6. 



— Woodworth, J. B. The Ice Contact in the Classification of Glacial 



Deposits. From the American Geologist, Vol. XXIII. February 1899. 



ERRATUM 



On page 38, eleven lines from the top, instead of " are freqtiently found 

 one foot" read "are someti?nes found one- half mile." 



