A full history of the English cabinet would be one of the seminal works on the technique of representative government; for, as Bagehot was the first to point out, the cabinet has been the primary source of decision in the modern English institutional system. Few books, it must be added, would be so difficult to write. Until 1917, the cabinet was without a secretary or authentic records; and there are even today purists who regret these obvious innovations. What account we have of its working is thus necessarily spasmodic and partial in character. A statesman who took a note of some meeting where his department was affected, a debate in the House of Commons after some dispute which has entailed resignation, a chance entry in a diary, the occasional revelation of autobiography–it is upon materials such as these that we are largely dependent for our knowledge. Even semi-official accounts, like those of Lord Morley and Mr. Gladstone, hardly give us more than the formal outline of the cabinet as it functions.

Yet one clue to its character has been curiously neglected; and it illustrates, as it happens, the nature of the social system in England in a quite special way. We know the men who occupied cabinet office; and by a careful study of who they were we can at least draw some inferences of interest and even importance. These inferences, let it be said at once, will not explain in any way the technique of the cabinet system. But at least they will serve to measure the way in which the changes in the structure of English social life are reflected in the choice of those responsible for the nation's effective governance.