Active Members. 25 
Gray, Harold, 2813 Ruckle St., Indianapolis. 
Research Chemist, Eli Lilly & Co. 
Chemistry. 
Greene, Frank C., 30 N. Yorktown St., Tulsa, Okla. 
Geology. 
Hadley, Murray N., 608 Hume-Mansur Bldg., Indianapolis. 
Physician. 
Surgery. 
Hanna, U. S., Bloomington. 
Professor of Mathematics. 
Hansford, Hazel Irene, 710 S. Fess Ave., Bloomington. 
Graduate Student in Botany, Indiana University. 
Happ, William, South Bend. 
Botany. 
Harding, C. Francis, 503 University St., West Lafayette. 
Head of Electrical Engineering, Purdue University. 
Harman, Paul M., 314 N. Dunn St., Bloomington. 
Physiology. 
Heimburger, Harry V., St. Paul, Minn. 
Instructor in Biology in Hamline University. 
Heimlich, Louis Frederick, 495 Littleton St., West Lafayette. 
Instructor in Botany, Purdue University. ° 
Hemmer, Edwin John, Somerville. 
Botany. 
Hendricks, Victor K., 1273 Railway Exchange Bldg., St. Louis, Mo. 
Assistant Chief Engineer, St. L. & S. F., Mo., Kan. & Texas; Mo., 
Okla. & Gulf Railroads. 
Civil Engineering and Wood Preservation. 
Hess, Walter E., Greencastle. 
Professor of Biology, DePauw University. 
Hetherington, John P., 417 Fourth St., Logansport. 
Physician. 
Medicine, Surgery, X-Ray, Electro-Therapeutics. 
Hinman, Jack J., Jr., State University, Iowa City, Iowa. 
Senior Water Bacteriologist and Chemist, Laboratories for State 
Board of Health. 
Chemistry and Biology. 
Hoffman, George L., care of Western Pennsylvania Hospital, Pitts- 
burgh, Pa. 
Bacteriology, Serology. 
Hole, Allen D., 615 National Road, Richmond. 
Professor Earlham Coilege. 
Geology. 
