"The promoters of every private bill have to satisfy the [Parliamentary] Committee that their proposals are sufficiently beneficial to the public to justify the Committee in entrusting them with the special powers necessary to carry them out; it is only on this condition that private rights and interests can be required to give way to public necessity. The task of the Committee is to examine the proposals from this point of view and for this purpose to hear the arguments and evidence both of the promoters and of thhe opponents, being specially vigilant to see that justice is done by way of compensation and protection to those who may be called upon to make sacrifices for the public benefit. The range of the subjects which may come before Parliament by way of private bill is immensely varied, including such matters as the construction of railways, the building of harbours and bridges, the extension of city boundaries, the development of water power and electricity, the provision of water supplies, and the alteration of the constitution and objects of charitable and educational institutions."