The nature of man, by Élie Metchnikoff 75505 [Subtitle: Studies in optimistic philosophy] [Author: Élie Metchnikoff] [Translator: P. Chalmers Mitchell] [Link: https://www.gutenberg.org/ebooks/75505] Thanks to Richard Tonsing and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Jacqueline