PROCEEDINGS 



OF THE 



EIGHTH ANNUAL MEETING 



OF THE 



IOWA ACADEMY OF SCIENCES. 



The eighth annual session of the Iowa Academy of Sciences was 

 held ill Des Moines, December 26 and 27, 1893. 



The following papers, read in full or by title, were, by action of the 

 Executive Committee, referred to the Secretary for publication: 



L. W. Andrews— Ou the Assumption of a Special "Nascent State." Some 

 Peculiarities of Solutions of Sulpho-cyanate. 



A. A. Bennett — Work in the Chemical Laboratory of the Iowa Agricult- 

 ural College. 



W. S. Hendrixson— The Electi-olysis of Silver: Some Laboratory Appa- 

 ratus. 



G. W. BissELL— Experimental Engineering at the Iowa Agricultural Col- 

 lege. 



S. Calvin— On the Geological Position of Benetlites dacotensis Macbride, 

 with Observations on the Stratigraphy of the Region in which the Spe- 

 cies was Discovered. 



Wm. H. Norton — Some Preliminary Notes on the Lower Devonian Strata 

 of Iowa. 



C. R. Keyes— Relations of the Cretaceous Formations iu Northwestern 

 Iowa. Derivation of the Unione Fauna of the Northwest. Process of 

 Formation of Certain Quartzites. 



J. L. Tilton— Origin of the Present Drainage System of Warren County 



H. Foster Bain— Structure of the Mystic Coal Basin. The Deep Well at 

 Sigourney. 



