Chicago: The Open Court Publishing Co., 1907. 8vo. xiii, [iii], 360 pp., plus 4 pages publisher's advertisements. First edition. With 114 illustrations. Original cloth; pencil annotations in English and possibly Chinese, heavier in the first half of the book. With the bookplate of Arnold Thackray. Item #14915
First edition of de Vries' lectures delivered in 1906 at Berkeley and Chicago. He deals with the discoveries of Hjalmar Nilsson and Luther Burbank, relating their work as well as his own to agriculture and horticulture. The final part deals with geographical distribution of plants.