622 
Wisconsin Academy of Sciences , Arts , aruZ Letters. 
TWENTY-NINTH ANNUAL MEETING. 
€ 
Milwaukee, Wis., December, £7-28, 1898. 
The several sessions were conducted in accordance with the follow¬ 
ing program for the meeting with a few exceptions as noted in the 
following: 
Tuesday, December 27th. —Reports of officers and other general busi¬ 
ness. 
Reading of papers. 
1. Lake temperatures. Edward A. Birge. 
2. Reports on the progress of the Geological and Natural History 
Survey of Wisconsin. (Illustrated by maps and specimens.) Edward 
A. Birge, Director of Survey, C. Dwight Marsh, Secretary, and others,. 
including the following: 
3. Wisconsin building stones. Ernest R. Buckley. 
4. Preliminary account of work done on the lake regions of Vilas 
and Oneida counties, Wisconsin. Dexter P. Nicholson. 
5. Contributions from the histological laboratory of the University 
of Wisconsin. (Illustrated by models and diagrams.) William S. 
Miller. 
6. Cell fusions occurring without nuclear fusions. Robert A. Harper . 
7. Further facts in relation to the succession-period of generations. 
Charles H. Chandler. 
8. The apparent size of the sun. Charles H. Chandler. 
9. Theoretical investigation on the motion of ground waters. III.— 
Mutual interference of two or more artesian wells. Charles S. Slichter. 
10. The maximum gravitational attraction at the pole of a spheroid. 
Elwyn F. Chandler. 
11. On the habit of finger-counting. Elwyn F. Chandler. 
12. Combinations of Pythagorean triangles as giving exercises in 
computation. Truman H. Safford. (To be read by Charles S. Slich¬ 
ter.) 
13. Lantern projections of three dimensional curves and surfaces. 
Charles S. Slichter. 
14. A study of the class of electric and magnetic oscillations known 
as aphotic. John H. Davies. (By title.) 
Wednesday, December 28th. —15. Forestry reform in Wisconsin. Er¬ 
nest Bruncken. 
16. Some facts in regard to the development of Epischura. C. 
Dwight Marsh. 
17. The block system of arranging insect collections. Harriet B. 
Merrill. 
