by succcssivc applications of clectrophorcsis at right angles Forty-two eminent scientists, representiug twenty-four reto each othcr, or by combining clectrophoresis with cliro- search institutions of seven nations, have collaborated in matography. The procedure has been used for many mix- such a way t h a t each of the twenty-seven chapters encom;ures, mostly of biological interest, and even for inorganic passes the recent thoughts of one or more brilliant minds ions. and/or the results of recent experiments by at least one The authors are t o be commended for producing a most qualified expert in the particular field of endeavor. The useful book which will have influence, not only in its own scope of the book is so broad t h a t i t embraces subjects field, but also in a whole range of research, particularly in ranging from dilute solutions to concentrated solutions, biology. It represents a vast amount of hard work on the fused salts and the pure ionic solid state. part of the authors. It is to be hoped t h a t the book will The book is not intended for the novice, but is pitched a t a get the recognition i t deserves from the scientific public. quite high level. It should be regarded as an authoritative The reviewer has only one criticism t o make, i . e . , t h a t the reference book to bc used by persons well acquainted with mathematical apparatus in some of the chapters is over- such treatises as “The Physicial Chemistry of Electrolytic elaborate for interpretation of the data a t the stage of Solutions” by H . S.Harned and B. B. Owen, and “Elecprecision now attained, but that is only his personal opin- trolyte Solutions” by R. A . Robinson and I
