"The multiplication of administrative agencies is the outstanding characteristic of our time. . . . The controversies within the range of administrative action may be different and extremely important, and they may call for a particular type of experience and special methods of inquiry, but the spirit which should animate that action . . . must be the spirit of the just judge."
This expression of Chief Justice Charles Evans Hughes's alarm at the bulging group of quasi-judicial Federal agencies which take evidence, hand down decisions and generally fulfill functions formerly reserved to the courts insofar as they were performed...