PROCEEDINGS OF THE ACADEMY 
1921 TO 1923 
FIFTY-FIRST ANNUAL MEETING, 1921 
The fifty-first meeting of the Wisconsin Academy of Sciences, 
Arts, and Letters, in joint session with the Wisconsin Archeological 
Society, was held at Madison, in Room 301, Biology Building, 
University of Wisconsin, on Friday and Saturday, April 15 and 
16, 1921. 
Under the direction of the president the following program was 
presented: 
First Session, Friday, April 15, 3:00 P. M. 
General Business. 
Presentation of Papers. 
1. Pood Value of some Aquatic Organisms found in Lake Mendota. 
Chancey Juday. 
2. Notes on the Herpetology of Wisconsin. George Wagner. 
3. The Distribution of the Pishes in Six Wisconsin Lakes. A. S. Pearse, 
4. The Eadiation Hypothesis of Chemical Action. Parrington Daniels. 
Illustrated. 
5. The Polarization Method of Measuring the Gloss of Paper. L. E. Inger- 
SOLL. Illustrated. 
6. Notes on the Chemical Composition of some of the Larger Aquatic Vege¬ 
tation of Lake Mendota. Henry A. Schuette. By title. 
7. A Preliminary List of the Water Mites of Wisconsin. Euth Marshall. 
By title. 
Second Session, Saturday, April 16, 9:30 A. M. 
8. Bisexual Organs in Bryum medium. George S. Bryan. Illustrated. 
9. Some Cytological Studies on Beloniella BehniL E. M. Gilbert. 
10. Aquatic Pungi of the Madison Lakes. Progress Eeport. E. M. Gilbert. 
11. The Antherozoid of Biccardia pinguis. W. N. Steil. 
12. Notes on Parasitic Pungi in Wisconsin, IX. J. J. Davis. 
13. Stone Celts from Southern Colorado. C. E. Brown. 
Effigy Mound Photographs. George E. Pox. 
14. Jacob Wimpfelings Germania, Strassburg 1501 and Thomas Murners 
Germania Nova, 1502. A Controversy about the Nationality of Alsace 
(at the beginning of the Sixteenth Century). Ernst Voss. 
