Hard Cover, 382 pages. G. P. Putnam's Sons, 1922.
ISBN: none

Notes about this volume:
Translation by Professor & Mrs. R. F. Alfred Hoernle from the German edition of 1894. (Reprinted several times by the Anthroposophical Publishing Co. in the 1920s). Edited by H. Collison. One source claims Dr. Herman Poppelbaum was involved in this revised translation, though he is not credited in the text. Second revised and enlarged edition, 1922. Reprinted 1932.