TITLES OF PAPERS PRESENTED 
The Address of the President — The Cosmology of the Universe. 
D. W. Morehouse 41 
Archaeology 
The New Albin Inscribed Tablet. Ellison Orr 49 
Decorative Markings on Some Fragments of Indian Pottery from 
Mills County, Iowa. Paul R. Rowe 53 
Geology 
Recent Studies of the Pleistocene in Western Iowa. G. F. Kay 
Till-like Deposits South of Kansas River in Douglas County, Kansas. 
Walter H. Schoewe 61 
Some Black River Brachiopods from the Mississippi Valley. Carroll 
Fane Fenton and Mrs. Mildred Adams Fenton 67 
Records of Paleozoic Glass-Sponges in Iowa. A. O. Thomas 85 
The Status of Certain Rhynchonellid Brachiopods from the Devonian 
of Iowa. A. O. Thomas and M. A. Stainbrook 93 
The Laramie Hiatus in the Southern Rockies. Charles Keyes 101 
Horizontal Oblique Faulting in Inclined Strata. Charles Keyes 104 
Taxonomic Rank of Pennsylvanian Grouping. Charles Keyes 105 
A Deposit of Pyrites in Coal. John M. Lindly 107 
The Deep Well at Winfield. John M. Lindly 110 
The Structure of the Fort Dodge Beds. James H. Lees 113 
Oil Prospects in Iowa. John E. Smith 
The Area Near Stuart, Iowa. John L. Tilton 
Some Deductions from the Occurrence of Two Large Quartzose Con- 
glomerate Bowlders of Unknown Origin, Found in the Kansan Drift 
Sheet at Centerville, Iowa. Ben H. Wilson 121 
Status of Sedimentation in Iowa. A. C. Trowbridge 127 
An Iowa Cambrian Eurypterid. O. T. Walter 127 
Schedules for Field Descriptions of Sedimentary Rocks. A., C. 
Trowbridge 128 
Origin of Limestone Conglomerates. Miss Louise Fillman 128 
Classification of Lenses. Miss Louise Fillman 128 
The Rockford Geodes. Sidney L. Galpin 128 
Notes on Some Mammalian Remains Reported in Iowa During the 
Past Year. A. O. Thomas 129 
Mathematics 
Iowa Section, Mathematical Association of America, 
The Method of Averages. G. W. Snedecor 
Mathematical Bulletins. T. M. Blakslee 
