‘In the summer of 1796, about two years after the death of his wife, he was prevailed on by Dr. Gregory to pass a few weeks at Edinburgh. He was accompanied by Mrs. Carmichael, who lived with him in Dr. Gregory’s house, a situation which united under the same roof every advantage of medical care, of tender attachment, and of philosophical intercourse. As Dr. Gregory’s professional engagements necessarily interfered with his attentions to his guests, I enjoyed more of Dr. Reid’s society than might otherwise have fallen to my share. I had the pleasure, accordingly, of spending some hours with him daily, and of attending him in his walking excursions, which frequently extended to the distance of three or four miles. His faculties (excepting his memory, which was considerably impaired) appeared as vigorous as ever; and, although his deafness prevented him from taking any share in general conversation, he was still able to enjoy the company of a friend. Mr. Playfair and myself were both witnesses of the acuteness which he displayed on one occasion, in detecting a mistake, by no means obvious, in a manuscript of his kinsman, David Gregory, on the subject of “Prime and Ultimate Ratios.” In apparent soundness and activity of body, he resembled more a man of sixty than of eighty-seven. He returned to Glasgow in his usual health and spirits; and continued for some weeks to devote as formerly a regular portion of his time to the exercise both of body and mind. It appears from a letter of Dr. Cleghorn’s to Dr. Gregory, that he was still able to work with his own hands in his garden; and he was found by Dr. Brown occupied in the solution of an algebraical problem of considerable difficulty, in which, after the labour of a day or two, he at last succeeded.’ It was thus in summer. In September he was attacked by a violent disorder, and after a severe struggle, attended with repeated strokes of palsy, he passed away on the 7th of October. Thus ended the tranquil life of deep and patient thought, which opened at Strachan and almost spanned the eighteenth century, morally and intellectually the representative of Scottish philosophical restoration under the conditions of the time. His ashes were laid in the College Church burial-ground, within the shadow of the College of which he had so long been the chief ornament, and under a tombstone bearing this inscription:—