Über die integrative Natur der normalen Harnbildung

579 thesis of the book is that "The active use of big muscles is essential to the health of individuals. These activities are not secured in the home, on the street, or in ordinary business. Big muscle activities are essential to the development of vocational and other kinds of skill. The higher levels of the nervous system depend for their health and stability upon the organic development of the middle and lower levels of the nervous system. Big muscle activity in physical recreation is an essential part of emotional control in relation to the formation of character." The primary fault of this text lies in its complete neglect of the basic phenomena of muscular contraction and nervous control of activity, and the mechanism of the circulatory and respiratory adjustments which follow muscular exercise. Without this basic material, a great amount of the subject matter presented in the chapters on circulation, respiration, and muscular contraction is largely meaningless. The second fault is the carelessness with which it has been written and edited. One gains the impression of a compilation of unrelated facts rather than of a unified account of a particular topic, and the defect is noticed not only in chapter structure, but also in composition of individual paragraphs. The mistakes in proofreading are excessive. Haggard is twice called Haz-zard, blood glucose is given as 108 mg. per cc., and completely ungrammati-cal sentences are found throughout the book. The material now available concerning muscular exercise demands a more careful study and a more critical evaluation than this book presents.: This work, The Integrative Nature of the Normal Formation of Urine is a continuation of a previous book, Principles of Renal Function, by the same author. The present publication is divided into three parts, each being published as a separate volume. The first volume contains three sections dealing, respectively, with "General considerations of the renal processes," "The tubular fate of absorbed solids," and "The tubular reabsorption of water." The second volume also consists of three sections entitled, respectively, "The work of the kidney cells," "The resorption of threshold substances in the convoluted tubule," and "Observations on the biophysics of reabsorption." The third volume consists of discussion and summary and is entitled "Systematic Retrospect ." This latter volume is a splendid integration of the voluminous material which the author has offered in the previous two volumes. The considerations presented in these volumes are …