Active ilembers. 23 
Hanna, U. 8., Atwater Street, Bloomington. 
Professor of Mathematics, Indiana University. 
Hansford, Hazel I., S. Eastern Hospital for Insane, North Madison. 
Psychology. 
Happ, William, South Bend. 
Botany. 
Harding, Charles F., 503 University St., West Lafayette. 
Head of Electrical Engineering School, Purdue University. 
Hardy, Eugene H., 1230 S. Keystone St., Indianapolis. 
Tool-maker. 
Microscopy, Diatomaceae. 
Harmon, Paul M., 311 East South Ave., Bloomington. 
Physiology. 
Hedebol, Frederick C. N., 106 E. Jefferson St., Valparaiso. 
Instructor in Biology, Valparaiso University. 
Heimburger, Harry V., St. Paul, Minnesota. 
Instructor in Biology, Hamline University. 
Heimlich, Louis F., 495 Littleton St., West Lafayette. 
Instructor in Botany, Purdue University. 
Hemmer, John E., Somerville. 
Botany. 
Hendricks, Victor K., 5642 Kingsbury Boulevard, St. Louis, Missouri. 
Assistant Chief Engineer, St. L. & F., Mo., Kans. & Texas R. R. 
Railroad Engineering. 
Hess, Walter N., South College Avenue, Greencastle. 
Professor of Biology, DePauw University. 
Zoology. 
Hetherington, Dr. J. P., 417 4th St., Logansport. 
Medicine, Surgery, Electro-Therapeutics. 
Hiestand, T. C., 514 8. Lincoln St., Bloomington. 
Senior, Indiana University. 
Geology. 
Hinman, Jack J., Jr., P. O. Box 3138, Iowa City, Iowa. 
Assistant Professor of Epidemiology, State University of Iowa. 
Chemistry and Bacteriology. 
Hoffman, George L., Western Pennsylvania Hospital, Pittsburg, Penna. 
Bacteriologist and Serologist. 
Hole, Allen D., 615 National Road West, Richmond. 
Professor of Geology, Earlham College. 
Holman, Richard M., Berkeley, California. 
Professor of Botany, University of California. 
Houseman, H. V., 300 S. Bradford St., Plattsville, Wisconsin. 
Chemistry and Physics. 
Howlett, Berton A., Valparaiso, 503 Elm Street. 
Associate Professor of Physics, Valparaiso University. 
Huber, Leonard L., Hanover. 
Professor of Chemistry and Biology, Hanover College. 
Hull, Julia, St. Anne, Illinois. 
Nature Study. 
