If he had laboured hard to fit himself for the front rank of his profession, his work on attaining that position showed increase rather than abatement. His private practice alone was the work of more than one ordinary individual, and his professorial duties took up some of the best hours of his day. In the evenings and at all odd times he busied himself with absorbing current or ancient literature, or in preparing his own contributions to both professional and general knowledge either with the pen or by experiment. "Oh that there were double twenty-four hours in the day," he sighed at a time when he was working at highest pressure, practising amongst peers, commoners, and cottagers alike, who all flocked to his residence or sent long distances for him. When Princess Marie of Baden, wife of the Duke of Hamilton, came under his special care in 1843 he felt that he was placed at the top of his profession in Scotland, and must have smilingly recalled the words of old Dr. Dawson, of Bathgate, when he heard of the successful contest for the Chair. "It's all very well," he had said, "to have got the Chair! But he can never have such a practice as Professor Hamilton. Why, ladies have been known to come from England to consult him!" They came from the furthest parts of Greater Britain to consult Hamilton's successor, in spite of the old doctor's prognostication! The energy as well as the versatility of the man is well shown in the works which he found time to carry on while he was thus establishing himself as a teacher and as a practitioner, during the years from 1840 to 1845. One of his first literary efforts, not wholly professional, the Memoir on "Leprosy and Leper-Houses," was produced at that time. It was a work of relaxation and pleasure, for it carried him deeply into his favourite archaeology. The fascination which this subject always had for him sprang from his love of nature, and of the greatest work of nature--man. "The leading object and intent of all the antiquarian's pursuit is MAN," he said, "and man's ways and works, his habits and thoughts, from the earliest dates at which we can find his traces and tracks upon the earth, onwards and forwards along the journey of past time. During this long journey he has everywhere left scattered behind him and around him innumerable relics forming so many permanent impressions and evidences of his march and progress."