law and insanity have been published. I have made it my duty to become familiar with these. I have, however, in no material particular altered the views I expressed in 1871, although I have in some cases modified the form, and in many cases added illustrations of the correctness of these opinions. I have found, with satisfaction, that some medical men who stand high in their profession hold the same doctrine with regard to disease, and the responsibility and capacity of those who labour under it, that I then enunciated. There are, however, still many who regard the law in this relation as erroneous and absurd. If this work does nothing to convince the latter, it may at least refute some of their arguments.
The chapters have been subdivided into sections, to which the index and table of contents refer; the pages of the first edition being noted by boldface superior figures. I have added much to the work as it was originally published, and have referred to all the most important cases which have been decided in England, Scotland, and America. In that respect, I am confident that the work will prove-and it is the highest encomium on a text-book-useful.