This is a series of seven essays, connected with one another, as the author indicates in his preface, both by a certain community of subject and by a common point of view from which each 'problem' in turn is regarded. This point of view lies in the importance attached to 'affect' and the insistence upon its undue neglect by the majority of ('academic') psychologists—a point of view which is linked on clearly and interestingly enough to a pragmatic position in philosophy. Clearness is indeed one of the strongest features of the work. Professor Rignano's theories are simple, attractive, perspicuous and (for those willing to adopt his fundamental outlook) full of common-sense. Under his able guidance, moreover, they seem time after time to fit in admirably with the facts. So smooth indeed is the process that at the end of each voyage of discovery the reader is