摘要：Birthdays give us the chance to pause and glance back into the record of the past and then to turn our faces with a smile of confidence toward the years ahead. Ten years ago it was my privilege to stand in the auditorium of one of our great medical libraries, the College of Physicians of Philadelphia, as President of the Association on the occasion of its Fiftieth Anniversary. I said then (1) "With minds open and alert, let us profit by the best that will come to us in the way of new ideas and new experience, yet let us never lose sight of the fine ideals which have made us what we are. So with courage, with assurance, and with heads held high, let us step unafraid across the threshold of our next half century!" With pardonable pride in looking back, I think that during this past decade we have done just that. Miss Troxel's excellent paper (2) covers this decade so well that I recommend that all new members of the Association make it priority reading. Here I shall comment only briefly concerning a few of the changes and developments which have seemed to me especially significant.
