Okayama, Japan, The Okayama Medical Society, 1922. Stapled. 24 p. With illustrations. Offprint from the Okayama-Igakkwai Zasshi, No. 386, 1922. Some wear. Old rubberstamp of the 'Centraal Instituut voor Hersenonderzoek, Amsterdam' and shelf-number in pen. Inscribed by the author K. Kosaka: 'Dr. C.U. Ariëns Kappers/ With Compliments of/ K. Kosaka'. Prof.Dr. C.U. Ariëns Kappers (1877-1946) was the director of the Dutch Brain Institute from 1909-1946. Very rare with dedication.