young fellow of energetic mind and body who at the age of sixteen or seventeen discovered what he wanted to do with his life and stuck by that with a most consummate doggedness. From his medical student days onward he was a hard, regular and systematic worker. "Work" he gave as the master-word of success in the profession. He had performed more than a thousand autopsies before he left McGill, and that was but an incident in his labors. In another of his addresses, he offered students three master keys: the Art of Detachment, the Virtue of Method and the Quality of Thoroughness. The Art of Detachment he explains as "the faculty of isolating yourselves from the pursuits and pleasures incident to youth." Perhaps he was jesting a little, but so far as the record shows he was master of the Art of Detachment. Till he went to Oxford and let himself out in his bibliographical passions and in society he seems to have sought all his pleasure in his work, in the hospital, in scientific publications, in association meetings, in professional dinners.
There is no indication that getting rich was one of his ambitions. His "Principles and Practice of Medicine," of which he presented the hundred thousandth copy to his son, made him so independent that when fire devastated Baltimore he could offer to turn his salary for a period of five years back fo the Johns Hopkins. Checks for a hundred dollars to needy students or struggling libraries slipped from him easily. But when he took to purchasing first editions, incunabula, and manuscripts, he appreciated a gift of £1,000 from a prosperous brother. Always he looked on medicine as "a calling, not a trade." He refused to become involved in a general practise; he wanted to
