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78. 
Proceedings of Indiana Academy of Science 
PHYSICS AND CHEMISTRY, FRIDAY 2:00-6:00, PARLOR “B.” 
Fakers in Science. 10 minutes. E. G. Mahin, Purdue University. 
The Integrating Power of Photographie Plates. 5 minutes. Arthur 
L. Foley, Waterman Institute for Research, Indiana University. 
PHYSICS AND CHEMISTRY, FRIDAY, 2:00-6:00, PARLOR “B.” 
Acyl Derivatives of O-Aminophenol. 10 minutes. R. E. Nelson 
and H. L. Davis, Purdue University. 
Beta Sulphur Trioxide. 5 minutes. E. G. Mahin, Purdue Uni- 
versity. 
A Study of Explosions. Lantern. 8 minutes. John B. Dutcher, 
Indiana University. 
Some Diffraction Patterns. Lantern. 5 minutes. John B. Dutcher. 
The Dependence Between Sound Wave Reflection and Frequency. 
Lantern. 5 minutes. Arthur L. Foley, Waterman Institute for 
Research, Indiana University. 
The Amplifying Effect of Horns and Other Sound Receivers. Lan- 
tern. 5 minutes. Arthur L. Foley. 
The Effect of Horns on the Distribution of Sound Energy about 
a Sounding Body. 10 minutes. Arthur L. Foley. 
The Actinic Quality of the Electric Spark. 5 minutes. Arthur L. 
Foley. 
The Effect of Ultra-Violet Light and X-Rays on the Stability of 
Matter. Lantern. 10 minutes. Arthur L. Foley. 
GEOLOGY AND GEOGRAPHY, FRIDAY, 2:00-6:00, PARLOR “B.” 
A Field Trip Through the Eastern States. 15 minutes. Fred J. 
Breeze, Indiana State Normal School, Eastern Division. 
The Hewitt Oil Field, Carter County, Oklahoma. By title. Louis 
Roark, Okmulgee, Okla. 
BOTANY, FRIDAY, 2:00-6:00, ASSEMBLY ROOM. 
The Toll of Weeds in Indiana. 10 minutes. Albert A. Hansen, 
Purdue Agricultural Experiment Station. 
ZOOLOGY, FRIDAY, 2:00-6:00, ASSEMBLY Room. 
A National Insect Pest Survey and Its Relation to Indiana. 15 
minutes. John J. Davis, Purdue University. 
An Insect Pest Survey for Indiana. 10 minutes. John J. Davis. 
All meetings at which papers are read are open to the public. 
Visitors are especially welcome at the general program to be given 
Friday at 8:00 p. m. in the Assembly Room. 
The program committee will appreciate suggestions with regard 
to the meetings, especially with regard to the coming spring meeting. 
If you have not paid your dues, they should be given to the treas- 
urer during the meetings. 
HAVE YOU RESERVED YOUR PLATE FOR THE BANQUET? 
