Charles Darwin's correspondence provides a unique window on Darwin's working methods, the atmosphere of intellectual revolution of his time, and his doubts, anxieties, and false starts that are now little known. This volume is the most comprehensive catalog to date of all presently known letters between Charles Darwin and his friends and associates. The editors of Darwin's Correspondence give information on the source and location of each letter, as well as a brief summary of the content of each. First published in 1985 (by Garland Publishing Company), the Calendar has been thoroughly updated...