BY the word prerogative we usually understand that special pre-eminence, which the king hath, over and above all other persons, and out of the ordinary course of the common law, in right of his regal dignity. It signifies, in it's etymology, (from _prae_ and _rogo_) something that is required or demanded before, or in preference to, all others. And hence it follows, that it must be in it's nature singular and eccentrical; that it can only be applied to those rights and capacities which the king enjoys alone, in contradistinction to others, and not to those which he enjoys in common with any of his subjects: for if once any one prerogative of the crown could be held in common with the subject, it would cease to be prerogative any longer. And therefore Finch[i] lays it down as a maxim, that the prerogative is that law in case of the king, which is law in no case of the subject. [Footnote i: Finch. L. 85.] PREROGATIVES are either _direct_ or _incidental_. The _direct_ are such positive substantial parts of the royal character and authority, as are rooted in and spring from the king's political person, considered merely by itself, without reference to any other extrinsic circumstance; as, the right of sending embassadors, of creating peers, and of making war or peace. But such prerogatives as are _incidental_ bear always a relation to something else, distinct from the king's person; and are indeed only exceptions, in favour of the crown, to those general rules that are established for the rest of the community: such as, that no costs shall be recovered against the king; that the king can never be a joint-tenant; and that his debt shall be preferred before a debt to any of his subjects. These, and an infinite number of other instances, will better be understood, when we come regularly to consider the rules themselves, to which these incidental prerogatives are exceptions. And therefore we will at present only dwell upon the king's substantive or direct prerogatives.