714 Wisconsin Academy of Sciences, Arts, and Letters. 
Second Session, Thursday, 7:30 p. m. 
The second session was held on the evening of Thursday 
April 9th, at 7:30 o’clock, when Professor S. W. Williston 
of the University of Chicago, delivered a lecture on Early 
Land Animals of North America. This lecture was fully 
illustrated by many restorations of early extinct animals, 
for the most part made by the lecturer. The lecture was 
well attended by the public, and was most interesting and 
valuable. 
Third Session, Friday, April 10, 9:30 a. m. 
The third session was held at 9:30 o’clock on Friday, 
April 10th, Dr. George P. Barth presiding. The following 
programme was presented: 
11. The Climate of Madison, Wis. 1. A Discussion of the 
Observations of Temperature, 1869 to 1913. Eric 
R. Miller. 
12. The Approach to Popular Literatuie. Arthur 
Beatty. 
13. A Method for Determining Approximate Metabolic 
Demands of Plants for Soil Water. H. E. Pulling. 
By title. 
14. Physiological Changes Causing Black Heart in Potato 
Tubers. E. T. Bartholomew. By title. 
15. Further Studies on Wisconsin Tremellineae. E. M. 
Gilbert. By title. 
16. Successful Method for Growing Clitocybe illudens and 
Armillaria mellea. V. H. Young. By title. 
17. The Effect of Lateral Pressure on the Formation and 
Direction of Growth of Plant Organs. J. B. 
Overton. By title. 
18. The Development of Botanical Microtechnique. Gil¬ 
bert M. Smith. By title. 
19. The Reaction of Pigment Cells in the Trout to Chemical 
Stimuli. John M. Lowe. 
20. Fertilization in the Parasitic Copopeda. Lernaeopoda 
Edwardsii Olsson. Nathan Fasten. 
21. Mutation and Atavism in Plants. Howland Russel. 
22. Heat Budgets of European and American Lakes. 
E. A. Birge. 
23. Physiological Age as Determined by Growth of 
Epiphasis of Wrist Bones. A. H. Yoder. 
24. On Habits and Relationship of Some Muscoid Flies. 
Sigmund Graenicher. 
