39. 
40. 
Program. 41 
Monadnocks and Similar Physiographic Features, 10 minutes—Clyde 
A. Malott. 
A New Explanation cf the Valley Filling of Southwestern Indiana 
and Associated Regions, 10 minutes—Clyde A. Malott. 
Zoology. 
The Crustaceans of Lake Maxinkuckee—Barton W. Evermann, 
Director of the Museum of the California Academy of Sciences, 
and Howard W. Clark, Scientific Assistant, U. S. Bureau of 
Fisheries Biological Station, Fairport, Iowa; 20 minutes. 
The Insects of the Lake Maxinkuckee Region—Barton W. Ever- 
mann, Director of the Museum of the California Academy of 
Sciences, and Howard W. Clark, Scientific Assistant, U. S. Bureau 
of Fisheries, Biological Station, Fairport, Iowa. 
Aphids on Fruit Trees, 5 minutes—S. D. Conner, Associate Chemist, 
Agricultural Experiment Station, Purdue University. 
Some Further Experiments for Low and High Bristle Number in a 
Mutant Strain of Drosophila Ampelophila, 10 minutes—F. Payne, 
Indiana University. 
A Memorial, Albert Homer Purdue—George H. Ashley, Washing- 
ton, D.C. 
A Memorial, Prof. M. J. Golden—R. B. Trueblood, Purdue Uni- 
versity. 
Some Trees of Indiana—F. M. Andrews, Indiana University. 
Ascomycetes New to the Flora of Indiana—Bruce Fink and Sylvia 
C. Fuson, Miami University. 
The Dormant Period of Timothy Seed After Harvesting—M. L. 
Fisher, Purdue University. 
The Birds of the Sand Dunes of Northwestern Indiana—C. W. G. 
Eifrig, Oak Park, IIl. 
A Synopsis of the Races of the Guina Flycatcher—Harry C. Ober- 
holser, the U. S. National Museum. 
Erosional Freaks of the Saluda Limestone—Elmer G. Sulzer, Mad- 
ison. 
Remnant Monuments Near Madison—Elmer G. Sulzer, Madison. 
A Kinetic Model of the Electron Atom—R. R. Ramsey, Indiana 
University. 
New Methods of Measuring the Speed of Sound Pulses Near the 
Source—Arthur L. Foley, Indiana University. 
