16 IOWA ACADEMY OF SCIENCES. 



*" Addition to Lichen Distribution in the Mississippi Valley," by Bruce 

 Fink. 



*" The Orchidacese of Iowa," by T. J. and M. L. F. Fitzpatrick. 



*" The Genus Viburnum of Iowa," by T. J. and M. L. F. Fitzpatrick. 



*" Saprophytic Basidionycetce of Ames," by Alice Ward Hess and Har- 

 riet Vandivert. 



*" Quince Fruit with an Unusual Number of Seeds," by L. H. Pammel. 



*"The Occurrence of Spha?rotheca Mali in Iowa," by L. H. Pammel. 



*" Preliminary Notes on Some Bacteria of the Ames Flora," by L. H. 

 Pammel. 



*"Some Cercospora of Macon County, Alabama," by George Carver. 



*" The Genus Salix in Iowa," by Carleton R. Ball. 



*" The Distributon of Trees in Iowa," by B. Shimek. 



" An Abnormal Fermentation of Bread," by C. H. Eckles. 

 ' " A Notable Ride; from Driftless Area to lowan Drift," by Samuel 

 Calvin. 



*" Formational Synonomy of the Coal Measures of the Western Interior 

 Province," by Charles R. Keyes. 

 y *" Terraces of the Nile Valley," by Charles R. Keyes. 



*" Genesis of Normal Compound and Normal Horizontal I'aulting," by 

 Charles R Keyes. 



" Observations in the Vicinity of Wall Lake," by Frank A. Wilder. 

 (Introduced by H. F. Bain). 



"Sand Ridges of Marioo County," by B. L. Miller. (Introduced by H. 

 F. Bain). 



A study of the distribution, movement and origin of certain sand ridges. 



Prof R. D. Salisbury of the University of Chicago, guest of 

 the Academy, attended the afternoon session on Tuesday, and 

 upon motion was invited to address the Academy upon such 

 sub] ect as he might choose He spoke briefly upon the features 

 of the edge of a drift sheet and significance of certain extra 

 morainic gravels found in the " Driftless Area." 



* Read by title and published in Proceedings. *' Read by title but paper with- 

 drawn. 



