To make our retrospect more complete, we propose to give the titles of such essays and papers on insanity and cerebral disease as appear in the foreign journals exchanged with us or purchased, but winch, from want of space and other reasons, we are unable to present to our readers in summary. By so doing we shall increase the value of these quarterly reports on the progress of psychological medicine, particularly to those who desire to make reference to the opinions and practice of Continental and American physicians. In other words, our retrospect will serve as a more complete index to the labours of our contemporaries in other countries.