WAGNER FREE INSTITUTE OF SCIENCE OF 
PHILADELPHIA 
TRUSTEES 
SAMUEL WAGNER, President Emeritus. 
SAMUEL TOBIAS WAGNER, President. 
SYDNEY T. SKIDMORE, Secretary. J. VAUGHAN MERRICK, Treasurer. 
HARRISON S. MORRIS. HENRY LEFFMANN, Chairman. 
JOHN WAGNER, Jr. 
FACULTY 
WIKEIAM HEALEY DALIC AM. Se: 
Honorary Professor of Invertebrate Paleontology. 
HENRY LEFFMANN, A.M., M.D., Ph.D. 
Honorary Professor of Chemistry. 
WILEIANMG Be] SCOii AM. Ph De ie) 
Honorary Professor of Geology. 
GEORGE VEY SuRADEING eh»: 
Honorary Professor of Physics. 
SAMUEL TOBIAS WAGNER, B.S., C.E. 
Professor of Engineering. 
SPENCER: PROMTERS MED: 
Professor of Zodlogy. 
SAMUEL EG SECHMUCKER: sens) aD: Se 
Professor of Botany. 
ESEIE BB. SERIA BAe 
Professor of Physics. 
CHAREES Ho IcAWALIES Pha\icsD!Sc: 
Professor of Organic Chemistry. 
DAVID W. HORN, Ph.D. 
Professor of Physical and Inorganic Chemistry. 
MAY VIEGE We si WilmtChHiEEL  eheb: 
Professor of Geology. 
JOHN WAGNER; Jr.; B:S. In GE. GCE. 
Lecturer on Engineering. 
JOHN G. ROTHERMEL, Director. 
