The Mutiny Act, like the grant of supplies, has remained annual ever since the Revolution; and as it is impossible for the State to exist without supplies or for the army to exist without discipline and pay the annual assembly of Parliament has become a matter of absolute necessity. The greatest constitutional change which our history has witnessed was thus brought about in an indirect but perfectly efficient way. The dangers which experience had lately shown lay in the Parliament itself were met with far less skill. Under Charles the Second England had seen a Parliament, which had been returned in a moment of reaction, maintained without fresh election for eighteen years. A Triennial Bill which limited the duration of a Parliament to three was passed with little opposition, but fell before the dislike and veto of William. To counteract the influence which a king might obtain by crowding the Commons with officials proved a yet harder task. A Place Bill, which excluded all persons in the employment of the State from a seat in Parliament, was defeated, and wisely defeated, in the Lords. The modern course of providing against a pressure from the Court or the administration by excluding all minor officials, but of preserving the hold of Parliament over the great officers of State by admitting them into its body, seems as yet to have occurred to nobody. It is equally strange that while vindicating its right of Parliamentary control over the public revenue and the army the Bill of Rights should have left by its silence the control of trade to the Crown. It was only a few years later, in the discussions on the charter granted to the East India Company, that the Houses silently claimed and obtained the right of regulating English commerce. [Sidenote: The Toleration Act.]