The Human Cerebrospinal Fluid. An Investigation of the Most Recent Advances, as Reported by the Association of Research in Nervous and Mental Disease. The Proceedings of the Association, New York, Dec. 29 and 30, 1924.

This is the fourth volume so far published by this active association, which has developed new methods in both organization and publication. There are thirty-nine contributors and, in addition, the volume contains much discussion, chiefly in the form of rigid cross-examination of the writers by the members of the commission to whom the papers are addressed. The following statement by the editorial committee in its preface, in view of the completeness and high quality of the volume, is a conservative estimate: "The committee believes that the volume represents the most up-to-date information on the subject, that it comprises material which up to now has been difficult of accessibility, and that the symposium that it embodies really furnishes the latest investigative results and the best current interpretation of both the physiological and the pathological aspects of the human cerebrospinal fluid." There are thirty-one separate articles in the seven sections, which have