However, amidst the social unrest, buffeted and perplexed by the cross currents of our time, we should not be pessimistic but should look forward with courage, parting reluctantly with whatever of good the past contained and living hopefully in the present. As Ellis says: "The present is in every age merely the shifting point at which past and future meet, and we can have no quarrel with either. There can be no world without traditions; neither can there be any life without movement. As Heraclitus knew at the outset of modern philosophy, we cannot bathe twice in the same stream, though as we know to-day, the stream still flows in an unending circle. There is never a moment when the new dawn is not breaking over the earth, and never a moment when the sunset ceases to die. It is well to greet serenely even the first glimmer of the dawn when we see it, not hastening toward it with undue speed, nor leaving the sunset without gratitude for the dying light that once was dawn." So to-day I bring to you from the New York Academy of Medicine felicitations on your one hundredth anniversary and greetings to your guests who have come from all over the world to join in your birthday celebration. ADDRESS BY DR. RICHARD G. ROWS _The Chairman_: Besides the Royal Charter, the New York Hospital is indebted to Great Britain for invaluable encouragement and financial aid in our natal struggle in Colonial days. Dr. Rows has added charmingly to that debt by journeying from London to take part in these exercises. His subject will be, "THE BIOLOGICAL SIGNIFICANCE OF MENTAL ILLNESS." As Director of the British Neurological Hospital for Disabled Soldiers and Sailors, at Tooting, he is giving the community and the medical world the benefit of his rich professional experience in the trying years of war as well as in peace, and gaining fresh laurels as he marches, like Wordsworth's warrior, "from well to better, daily self-surpast." DR. ROWS I must first express to you my keen appreciation of the high honor you have conferred on me by inviting me to come from England to address you on the occasion of the centenary celebration of the opening of this Hospital.