120 bulletin of the 



193d Meeting. February 5th, 1881. 



Vice President Welling in the Chair. 

 Thirty-eight members present. 



The minutes of the last meeting were read and adopted. 

 A communication was then read by Mr. C. E. Dutton, on 



THE SCENERY OP THE GRAND CANON DISTRICT. 



The communication was reserved by the author. 

 Remarks upon this communication were made by Mr. J. W. 

 Powell, at the conclusion of which, the Society adjourned. 



194th Meeting. February 19th, 1881. 



Vice President Taylor in the Chair. 

 Thirty-one members present. 

 The minutes of the last meeting were read and adopted. 



The President announced to the Society the death of Dr. George 

 A. Otis. It was moved and carried, that a committee be appointed 

 to prepare suitable resolutions for the action of the Society, relative 

 to the death of Dr. Otis, and the Chair appointed a committee 

 consisting of Messrs. Antisell, Billings, and Mew. 



Tbe first communication for the evening was by Mr. J. E. Todd, 

 of Iowa who had been invited by the General Committee to read a 

 communication on the 



QUARTERNARY DEPOSITS OF WESTERN IOWA AND EASTERN 

 NEBRASKA. 



Mr. Todd gave first an account of the three members which com- 

 pose the Quarternary deposits of the regions in questions. The lowest 

 is in Iowa, and is the boulder-clay consisting of the hard compact 

 clay usually occurring in this formation, with its included rocky 

 glaciated fragments. In central and western Nebraska this clay 

 is wanting. Upon it rests the red clay, a formation of varying 

 thickness, but usually quite thin, rarely exceeding 20 feet. Upon 

 this rests the loess which constitutes a subject of special interest. 

 One peculiarity of it is found in the fact, that it overlies the ine- 

 qualities of the country which existed prior to its disposition ; being 



