The author's attempt, as stated in the preface, has been to put in book form, all available knowledge concerning epidemic encephalitis. The subject has been fairly well covered in a reasonably logical manner. The book in reality is a compilation with eighty-one titles mentioned in the bibliography—and with case records, more or less complete, added from the author's practice. Such a book can be read with some advantage by the general practitioner and without much difficulty, as the author has followed his avowed purpose of adhering strictly to the simplest terms. There are too many errors in spelling and phraseology and a too evident carelessness in the use of ordinary English, however, to win the approval of the scientist or purist in language.