them to place the preparation of the fourth edition entirely in the hands of the American collaborator; and it is but the duty of the latter to acknowledge his full responsibility for the above-mentioned changes and additions.
The favorable reception of this MANUAL has been most gratifying to its authors, as the best proof of its having with some measure of success filled an existing need; their earnest hope is that it will continue to do so.
Symptoms common to all forms, simple form, cata- tonia, delusional forms, délire chronique à évolution systématique, diagnosis, prognosis, etiology, nature, pa- thological anatomy, and treatment.