The next three chapters, on "Serviceable Memory," "Mental Efficiency," and "Mental Health," are full of sound practical advice. The first contains a clear and attractive presentation of the principles of remembering, so arranged as to exemplify the rules which it inculcates. The second emphasizes the importance of the wave form of attention in all mental work, the superiority of efferent to afferent response as an educational process, and the acquirement of mastery by a transfer of control from higher to lower mental levels. There is also good counsel with regard to the best time and manner in which to rest, although the author's deductions from the physiological "curve of sleep" appear somewhat hasty. "Mental Health" is defined in terms of our mental "members" in the classical way, and the "Ten Maxims of Wise Living," which are given, are selected from the history of moral philosophy rather than from current psychotherapeutic results.
The chapter on "Mental Law" is the most interesting one for the theoretical psychologist, and discusses in a general but illuminating manner, principles of perception and of perseveration which are of interest to the psychological psychiatrist. The chapter on "Law in Illusion" seems disproportionately long, but gives an interesting description and analysis of three different types of illusions: those based on "units of direction," the over-estimation of "cylinder height," and upon the "size-weight" error. In connection with the second, the results of original investigations in the author's laboratory are presented. It is shown that a knowledge of the complex but definite principles underlying illusions can be made practically serviceable, for example, in tests of mental normality.
The final chapter deals with a specific illustrative problem in "Mental Measurement," viz. the determination of a subject's fitness for a musical career. A detailed analysis of the problem is offered, and it is shown that the elemental questions involved can be answered by the methods of the psychological laboratory, but that these answers require expert interpretation before they can be made practically applicable.
The author's style is engaging and clear. LEONARD THOMPSON TROLAND.
AN OUTLINE OF PSYCHOBIOLOGY. By Knight Dunlap, Associate Professor of
Psychology in the Johns Hopkins University. Baltimore, The Johns Hopkins
Press, 1914. Pp. 121, octavo; illustrated.
This volume even though brief will be highly appreciated by very many students of normal and of abnormal psychology because it is the first book to afford them just what, in an elementary way, they need concerning the nervous system, the essential musculatures, and the epithelia, whose manifold activities are in some certain mode concomitant to the succession of compound mental events. Surely, and widely, those who a few years ago "came to scoff" at the ever-rising scientific stream of mind-protoplasm relationship will "remain to pray" to the rising and satisfying goddess of the new philosophy. The body with its unimagined intricacies and beauties of still unguessed adaptation and its marvels of Someone's ingenuity is surely now at length coming into its own. And when, after the years, it has come into its own in a reasonable measure, "the continuity of mind-and-energy" and "the dynamic-spiritualism of the Cosmos" when they are mentioned will no longer draw that quasi-withering smile of toleration to the face of the orthodox psychologist with which some of us are familiar.
This volume, happily devised by Professor Dunlap to meet this real need, at first in his own pupils and later in a wider public, will materially help this progress, for it has within it in fairly up-to-date and simple form much of the structure and function, always of surpassing interest when understood, of the human action-system. Seventy-seven excellently clear and well-chosen illustrations make the well-printed text still more informing. There is a good index; and short lists of books at the ends of the chapters.
The present reviewer notes only one omission of substantial importance from the neurologic part of the book, and that is the very recent, howbeit important, matter of the functional opposition between the sympathetic proper and the other, the cranio-sacral, portion of "the autonomic." The work lacks also, in this first edition, a statement and discussion of the important all-or-none principle which is now applicable to voluntary muscle, probably, and to the neurones. And it is to be hoped too that the author will take the bull by the horns and, in the next edition, show the nature of protoplasm in general in an homologous way, as the basis, through its uniquely complex kineticism, of the onward rush of the mental process. With this addition the essential nature of irritability too might be set forth in this already valuable (and inexpensive) treatise. GEORGE V. N. DEARBORN. Sargent Normal School.
PSYCHOLOGY, GENERAL AND APPLIED. Hugo Munsterberg New York and London: D.
Appleton and Co., 1914; Pp. xiv X487 1.75.
In this volume, designed to serve the needs both of the general reader and of the college student, Professor Munsterberg has represented in most readable form the essentials of the entire range of his contributions to psychology. The well-known differentiation of the "two psychologies" is the core of the book; herewith is reintroduced the psychology of the soul, not merely as being on a level with, but ultimately even superordinate to, the descriptive psychology which had banished from so many systems all mention of the soul or even of the self. For we are shown how all description and explanation, whether of material objects or of conscious processes, is after all but construction in the service of purposes, to apprehend, understand, and realize which is the primary business, of life.