Proceedings jof the Academy. 
1357 
30. A Simple Method of Determining the Energy of Baker’s 
Yeast. W. D. Frost. 
31. A Consideration of the Nesting Habits of Some Fossorial 
Wasps. George P. Barth. 
32. Close Relations of Certain Flies to Flowers of the Com¬ 
posite. Sigmund Graenicher. 
33. Vitalism and the Ultimate Divisibility of Living Matter. 
Charles T. Brues. To be presented by Richard A. Muttkowski. 
34. The Chief Sense of Guidance and the Origin of the Tent- 
Building Habits of the Ant Cremastogaster lineolata Say. 
Alfred C. Burrill. 
35. The Nomenclature of Types and its Practical Applica¬ 
tion. Richard A. Muttkowski. 
36. Apogamy in Aspidium falcatum. Ruth F. Allen. 
37. Embryo-sac Development and Polyembryony iu Smiles 
cina racemosa. Fred McA llister. 
38. A Comparison of Mitoses in Mosses with those in the 
Seed Plants. C. E. Allen. 
39. The Grass Flora of Milwaukee County, Wisconsin. 
Charles T. Brues and Beirne B. Brues. By title. 
40. The Structure of the Peridium in Certain Slime Molds. 
R. A. Harper. 
4,1'. Nuclear Phenomena in the Root-tip of Dolichos multi- 
florus. R. H. Denniston. 
42. Experiments on the Sex Ratios in Hemp. F. J. Prit¬ 
chard. 
Morning Session, February 17. 
The meeting was called to order, with Mr. Henry L. Ward 
in the chair. Upon motion, the reading of the minutes of the 
last meeting was dispensed with. Mr. George Wagner pre¬ 
sented the report of the Exchange Committee; and it was 
moved that the report be accepted. 
The reading of papers was then taken up; at which point 
President Samuel Plantz took the chair. The reading of the 
papers proceeded as announced on the programme. 
