TITLES OF PAPERS PRESENTED 11 



Page 



Some Improved Laboratory Methods W. S. Hendrixson 497 



Further Work on Acid Potassium Phthalate as a Standard in . 



Volumetric Analysis W. S. Hendrixson 501 



Milk as the Sole Diet of Ruminants. . .Andrew C. McCandlish 505 



Experiments with Soy Bean Meal as a Substitute in the Army 



Ration Arthur 'W. Dox 517 



Geology 



Contributions to the Geology of Southwestern Iowa 



George L. Smith 521 



Progress Report on Recent Investigations of the Pleistocene 



in Iowa George F. Kay 



History of the Investigation of the Pleistocene of Iowa 



E, J. Cable 



Relation of the Wisconsin Drift to the lowan Drift as Revealed 



in Worth County Emmet J. Cable 539 



ProvinciaJl Unity of Continental Interior Coal-fields 



Charles Keyes 545 



Preglacial Moingona River Charles Keyes 551 



Alpine Structures of Jasper Park Charles Keyes 501 



Park Sites Along Des Moines Valley James H. Lees 569 



The Deepest Well in the State James H. Lees 



Some Features of the Fort Dodge Gypsum James H. Lees 537 



The Ste. Genevieve Marls of Fort Dodge and Their Fauna 



James H. Lees and A. O. Thomas f.39 



