in publishing a third edition of these memoirs, i have to express the grateful sense i entertain of the indulgence with which they continue to be received.

since the appearance of the second edition, miss abernethy has kindly placed at my disposal the few papers which mr. abernethy had preserved; and i trust that the additions they have enabled me to make, may not prove unacceptable. besides circumstances of minor interest, interspersed through the volume, there are some of great importance. the facts relating to the marriage of mr. abernethy not only disprove a number of idle reports, but offer another contribution to the general kindness and sincerity of his character. in selecting a few extracts from his thoughts on religion and morals, i have been desirous of placing on record some of mr. abernethy's sentiments on these all-important questions, without forgetting that i am writing the memoirs, not of a divine, but of a philosophical physiologist and surgeon. in like manner, in the accompanying observations which i have submitted on the relations of science and religion, i have restricted myself to little more than a layman's repudiation of a vulgar error. some little anxiety to impress this may be excused, lest it should be supposed that an argument has been stated in a few pages, which, even in an abridged form, wouldxiv require a volume; besides being inconsistent with the more measured objects of a biographical memoir. i have carefully avoided quoting any papers which, either by opinion or otherwise, reflected on the conduct of any party; and i have taken some pains to render this unnecessary. no man could be more sensitive than abernethy with regard to any imputation on his honour; but that once satisfied, i am persuaded that nothing would have been more unwelcome to him than that his memoirs should have contained, unnecessarily, one word that should offend any one; nor anything more acceptable than its avoidance under circumstances of provocation. i have had to contend with difficulties which i need not particularize; it is far more agreeable to express the gratitude i feel for that sympathy and assistance which have placed papers and documents at my disposal, with a generous confidence which, though scarcely easy sufficiently to appreciate, i trust it is impossible knowingly to abuse.

should it appear that, in my anxiety to avoid disagreeable discussions, i have left any subject imperfectly handled, as regards the high character of mr. abernethy, i should of course avail myself of the documents now in my possession. i trust, however, nothing of the kind may be necessary. having long thought it would be interesting to many persons, old pupils and others, to record his manner in his later days, when delivering his surgical or evening lectures, as well as the position he was so accustomed to assume when enunciating the fundamental axiom of that improved surgery of which he was the author, i have added the lithograph at page 219. for this artistic sketch i am indebted scarcely less to the painstaking than to the genius of the late mr. charles blair leighton, who, as stated in the text, did not live to realize those expectations of future excellence to which his talents had given rise. mr. leighton, after a short illness, died in may, 1855.

g. m.

the court yard, albany,

november, 1856.