The power, office, and duty of a justice of the peace depend on his commission, and on the several statutes, which have created objects of his jurisdiction. His commission, first, empowers him singly to conserve the peace; and thereby gives him all the power of the antient conservators at the common law, in suppressing riots and affrays, in taking securities for the peace, and in apprehending and committing felons and other inferior criminals. It also empowers any two or more of them to hear and determine all felonies and other offences; which is the ground of their jurisdiction at sessions, of which more will be said in it's proper place. And as to the powers given to one, two, or more justices by the several statutes, that from time to time have heaped upon them such an infinite variety of business, that few care to undertake, and fewer understand, the office; they are such and of so great importance to the public, that the country is greatly obliged to any worthy magistrate, that without sinister views of his own will engage in this troublesome service. And therefore, if a well meaning justice makes any undesigned slip in his practice, great lenity and indulgence is shewn to him in the courts of law; and there are many statutes made to protect him in the upright discharge of his office[t]: which, among other privileges, prohibit such justices from being sued for any oversights without notice beforehand; and stop all suits begun, on tender made of sufficient amends. But, on the other hand, any malicious or tyrannical abuse of their office is sure to be severely punished; and all persons who recover a verdict against a justice, for any wilful or malicious injury, are entitled to double costs.

[t] Stat. 7 Jac. I. c. 5. 21 Jac. I. c. 12. 24 Geo. II. c. 44.

It is impossible upon our present plan to enter minutely into the particulars of the accumulated authority, thus committed to the charge of these magistrates. I must therefore refer myself at present to such subsequent parts of these commentaries, as will in their turns comprize almost every object of the justices' jurisdiction: and in the mean time recommend to the student the perusal of Mr Lambard's eirenarcha, and Dr Burn's justice of the peace; wherein he will find every thing relative to this subject, both in antient and modern practice, collected with great care and accuracy, and disposed in a most clear and judicious method.

I shall next consider some officers of lower rank than those which have gone before, and of more confined jurisdiction; but still such as are universally in use through every part of the kingdom.

IV. Fourthly, then, of the constable. The word constable is frequently said to be derived from the Saxon, koning-staple, and to signify the support of the king. But, as we borrowed the name as well as the office of constable from the French, I am rather inclined to deduce it, with sir H. Spelman and Dr Cowel, from that language, wherein it is plainly derived from the Latin comes stabuli, an officer well known in the empire; so called because, like the great constable of France, as well as the lord high constable of England, he was to regulate all matters of chivalry, tilts, turnaments, and feats of arms, which were performed on horseback. This great office of lord high constable hath been disused in England, except only upon great and solemn occasions, as the king's coronation and the like, ever since the attainder of Stafford duke of Buckingham under king Henry VIII; as in France it was suppressed about a century after by an edict of Louis XIII[]: but from his office, says Lambard[w], this lower constableship was at first drawn and fetched, and is as it were a very finger of that hand. For the statute of Winchester[x], which first appoints them, directs that, for the better keeping of the peace, two constables in every hundred and franchise shall inspect all matters relating to arms and armour.

[] Philips's life of Pole. ii. 111.

[w] of constables, 5.

[x] 13 Edw. I. c. 6.

Constables are of two sorts, high constables, and petty constables. The former were first ordained by the statute of Winchester, as before-mentioned; and are appointed at the court leets of the franchise or hundred over which they preside, or, in default of that, by the justices at their quarter sessions; and are removeable by the same authority that appoints them[y]. The petty constables are inferior officers in every town and parish, subordinate to the high constable of the hundred, first instituted about the reign of Edward III[z]. These petty constables have two offices united in them; the one antient, the other modern. Their antient office is that of headborough, tithing-man, or borsholder; of whom we formerly spoke[a], and who are as antient as the time of king Alfred: their more modern office is that of constable merely; which was appointed (as was observed) so lately as the reign of Edward III, in order to assist the high constable[]. And in general the antient headboroughs, tithing-men, and borsholders, were made use of to serve as petty constables; though not so generally, but that in many places they still continue distinct officers from the constable. They are all chosen by the jury at the court leet; or, if no court leet be held, are appointed by two justices of the peace[c].

[y] Salk. 150.