Rudolf
Leuckart

Ludwigs-Universität Giessen


Edward Laurens
Mark

Harvard (DevTree)


Ernst Heinrich
Haeckel

Universität Jena


William Thierry
Preyer

University of Jena (PsychTree)


Max
Verworn

University of Jena




Edward Laurens
Mark

Harvard (DevTree)


Rudolf
Leuckart

Ludwigs-Universität Giessen


George H.
Parker

Harvard (Anatomy Tree)


Samuel Otmar
Mast

Johns Hopkins (ID Tree)


William Hay
Taliaferro

Chicago (ID Tree)

Paul Roberts
Cannon

Chicago
(Options)

Earl Philip
Benditt

Chicago (Physiology Academic Tree)

Stephen Mark
Schwartz

University of Washington (Physiology Academic Tree)

Paul CannonX