We accord a hearty welcome to this manual. Those who are acquainted with the author, either personally or from the Pathological Retrospect which has appeared from time to time in this Journal, would be certain that no book with the above inscription on the title page would be other than a most painstaking and accurate production. Such a reader will not find his confidence misplaced. It is, of course, up to date, but this means up to the date of as careful and skilful a microscopist as it is possible to have. There is an excellent index by Dr. Craig, who was formerly on the staff of Bethlem Hospital. A work of this kind does not admit of quotation, and we must therefore content ourselves with referring the reader to Dr. Goodall's book itself.