D Observations by Lord Simonds in Commissioners of Inland Revenue v. National Anti-Vivisection Society(2 ) that "One of the tests, and a crucial test, whether a trust is charitable lies in the competence of the Court to control and reform it. . . . . . that it is the King as parens patriae who is the guardian of charity, and that it is the right and duty of his Attorney-General to interE venue and to inform "the Court if the trustees of a charitable trust fall short of their duty.· So too it is his duty to assist the ,Court, if need be, in the formulation of a scheme for the execution of a charitable trust. · But . . . . is it for a moment to be supposed that it is the function of the Attorney-General on behalf of the Crown to intervene and demand that a trust shall F be established and administered by the Court, the object ot which is to alter the law in a manner highly prejudicial, as he and His Majesty's Government may think, to the welfare of the State ?" do not assist the case of the revenue. In the view of Lord Simonds the object of the trust was political and, therefore, G void, and not because it was vague or indefinite.