We had the pleasure of recommending the first edition of this little book to the readers of the “Journal of Mental Science,” and we hope in time to see a third edition. We know that the work has been found a useful text-book for students in the Edinburgh Medical School, and no doubt also in other places. Any medical man who wishes to refresh his knowledge of the spinal cord and brain will find a timely help in Mr. Whitaker's clear descriptions and well-planned illustrations and diagrams. In the present edition the page is larger, and there are now 178 pages instead of 135. The chapter on the methods of ascertaining the location of the different sulci and gyri in relation to the skull and scalp is a useful addition at present, when surgery is busy with new operations on the cranial contents. The principal improvement is, however, in the lithographic plates, of which we have now 40 instead of 22. They are also more elaborate in outline, and the effect of the diagrams has been more carefully studied. The labour in designing these illustrations must have been fully equal to that of writing the text. Mr. Whitaker does not claim to teach any new views in his book, but for a clear and concise description of the nervous centres it has not been surpassed.