40 
jl. 
38. 
Proceedings of Indiana Academy of Science. 
Geology. 
A Preliminary Report on the Origin of Indianaite in Indiana, 10 
minutes—Wm. N. Logan, Indiana University. 
The Occurrence of Coal in Monroe County, Indiana, 5 minutes— 
Wm. N. Logan, Indiana University. 
The Occurrence of Indianaite in Monroe County, Indiana, 5 min- 
utes—Wm. N. Logan, Indiana University. 
Notes on the Paleontology of Certain Chester Formations in Sovth- 
ern Indiana, 10 minutes—Allen D. Hole, Earlham College. 
Soil Survey of Cass County, 10 minutes—Colonzo C. Beals, Indiana 
University. 
Physics. 
A New Method of Measuring the Velocity of Sound, 15 minutes 
(lantern) —A. L. Foley, Indiana University. 
The Instantaneous Velocity of Sound at Points Near the Source, 
5 minutes (lantern)—A. L. Foley, Indiana University. ; 
An Experimental Determination of the Relation Between Sound 
Velocity and Intensity, 5 minutes (lantern)—A. L. Foley, Indiana 
University. 
An Experimental Determination of the Duration and Luminosity 
of an Electric Spark, 10 minutes (lantern)—A. L. Foley, Indiana 
University. 
A Simple Method of Determining the Character and Frequency of 
the Oscillation of Machine Parts, 5 minutes (lantern)—A. L. 
Foley, Indiana University. 
Energy Losses in Commercial Hammers, 5 minutes—Edwin Mor- 
rison, Earlham College. 
New Surface Tension Apparatus, 5 minutes (lantern)—Edwin Mor- 
rison, Earlham College. 
Effect of Certain Dissolved Salts Upon the Surface Tension of 
Water, 10 minutes (lantern)—Edwin Morrison, Earlham College. 
Physiography. 
The Chester Series of Indiana and Their Correlation with Those of 
Kentucky, 10 minutes—Clyde A. Malott and James D. Thomp- 
son, Jr. 
A Peculiar and Remarkable Adjustment of Drainage—the Case of 
“The American Bottoms” of Greene County, Indiana, 10 minutes— 
Clyde A. Malott and Frederick J. Breeze. 
A Notable Case of Successive Stream Piracy, 10 minutes—Clyde A. 
Malott. 
