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This is the first volume of a "Handbuch der Psychiatrie" under the editorial management of Professor G. Aschaffenburg. It is also the first volume of Jakob's work. The book is one of the best and most complete summaries of what we know today of the minute structure of the brain and the changes that may occur. The subjects are taken up systematically. In the first chapter, under morphology, the basic factors in ontogenesis and phylogenesis are briefly but well discussed. General considerations about the brain are also taken up under this heading and in particular one subdivision considers the weight of the brain and convolutional pattern in the brains of normal and abnormal men.
In the second chapter the microscopic structure of the end-brain is discussed. Here the cyto-architecture and the myelo-architecture is one of the high spots of this work. All that is new is considered and all of