1985-1997 xxix, 702, xxxiii, 603, xxix, 523, xxxiii, 711, xxix, 705, xxix, 637, xxxv, 671, xxxvii, 766, xxxiii, 609, xxxvii, 936 p., several figs & pls, num. portraits, cloth (dust jacket). Four volumes with the signature of Dr. A. Brouwer in first end-papers, else clean and spotless.Good set of the cloth-bound edition (in good dust jackets) of the first 10 volumes, which includes the very interesting years just before, during and after the first appearance of ''The Origin of Species".