“The Institute has now fairly started on its new career of usefulness as an incorporated society.” Usefulness, then, in the admirable words of the Council on the 5th June last, is to be the ruling principle of the Institute's new and corporate life, as few, who are acquainted with what has been done with hut small opportunity, will deny it has been of its action in the past. But for its usefulness to be thorough, the Institute must be concerned with both the theoretical and practical sides of our profession in all its branches—recollecting as well its commercial basis as its mathematical speculations, considering its connection with medical and legal specialties, collecting data, comparing methods, proving uncertainties, destroying chimæras, teaching students and testing their acquirements, not to mention accumulating a library for reference and instruction—always advancing, suggesting, restraining, reforming.