In recent years there has been an increasing tendency for the papers presented at the meetings of this Association to deal with the application of science to industrial and social problems. The norms of science have been applied to the art of living. The rapprochement on this platform between the scientist and the man of practical affairs has gone even further. Valuable contributions have been made by administrators and leaders of industry which have indicated the scientific implications of the practical problems in their respective spheres; and by no means the least function served by these contributions has been that of propounding problems to the scientists.