Rudolf
Leuckart

Ludwigs-Universität Giessen




Ernst Heinrich
Haeckel

Universität Jena


William Thierry
Preyer

University of Jena (PsychTree)


Max
Verworn

University of Jena






Rudolf
Leuckart

Ludwigs-Universität Giessen




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