Monism as a knot between religion and knowledge (naturalist's credo). Lecture given on October 9, 1892 in Altenburg during the celebration of the 75th anniversary of the Naturalist Society of Osterland. Translated on the author's authority by Maks Rosenfeld, Krakow 1906, published by the National Printing House in Krakow, f. 14 x 20.5cm, p. 67
original publisher's booklet cover preserved, losses at bottom and top of spine of cover, tears on spine, minor soiling, otherwise good condition
