George Howard Parker Volgorde van de boeken (chronologisch)

This volume expands upon the Joseph Leidy Memorial Lecture delivered at the University of Pennsylvania on March 3, 1936. It includes historical summaries and recent studies conducted by the author and students on activating color-cells in higher animals, exploring their significance for the nervous system. The concept of neurohumors, previously discussed in earlier works and elaborated upon here, is presented as a potentially valid framework for understanding general nervous functions. This essay aims to provide reasons for accepting and further testing this idea, acknowledging that it remains in a formative stage, with outcomes dependent on ongoing research. The invitation to deliver the lecture was extended by a committee including Dr. Josiah H. Penniman, Provost of the University, and others, to whom the author expresses gratitude for the honor. A personal sense of gratification regarding this acceptance is conveyed in the Foreword. The publisher, Forgotten Books, specializes in reproducing rare and classic works, utilizing advanced technology to preserve original formats while addressing imperfections in aged copies. While some flaws may remain, they are typically repaired to maintain the integrity of historical works.