This is the twentieth annual meeting of our Association, and it has been thought of as a suitable event for marking off a first period of our history. A score of years is a sufficiently conventional unit of measure to assure the form and the significance of a celebration of that character, and the nearness to the hyphen of the centuries would also lend appropriateness to our first comprehensive retrospection. But these thoughts have not been ‘submitted’ regularly to the Association; they have, on the contrary, not spread much beyond the few individual minds of their spontaneous and coincident birth, and therefore no authorized historic sketch has been prepared, no tablet has been inscribed, no bronze is to be unveiled.