TY - BOOK TI - Color changes of animals in relation to nervous activity UR - https://www.biodiversitylibrary.org/item/29115 PB - University of Pennsylvania Press CY - Philadelphia PY - 1936 N1 - "The present volume is a somewhat extended form of the Joseph Leidy memorial lecture in science delivered at the University of Pennsylvania March 3, 1936."--Pref. --- Introduction.--The dogfish.--The killifish.--Neurohumors.--The nervous system and chromatophores. AU - Parker, George Howard, KW - Body fluids KW - Chromatophores KW - Color KW - Fishes KW - Nervous system ER -