MILITARY EQUIPMENT. Extract from the _Act for Regulating the Militia_:--"Every listed Soldier, and other Householder shall be always provided with a wellfixt Firelock Musket, of Musket or Bastard-Musket bore, the Barrel not less than three Foot and an half long, or other good Fire Arms to the satisfaction of the Commission Officers of the Company; a Cartouch Box: one Pound of good Powder: Twenty Bullets fit for his Gun, and twelve Flynts; a good Sword or Cutlass; a Worm, & priming Wire, fit for his Gun, on Penalty of six Shillings...."--_Boston News-Letter_, Feb. 7-14, 1733-4. BREECH-LOADING GUN. Made by John Cookson, and to be Sold by him at his House in Boston: a handy Gun of 9 Pound and a half Weight; having a Place convenient to hold 9 Bullets, and Powder for 9 Charges and 9 Primings; the said Gun will fire 9 Times distinctly, as quick, or slow as you please, with one turn with the Handle of the said Gun, it doth charge the Gun with Powder and Bullet, and doth prime and shut the pan, and cock the Gun. All these Motions are performed immediately at once, by one turn with the said Handle. Note, there is Nothing put into the Muzzle of the Gun as we charge other Guns.--_Boston Gazette_, Apr. 12, 1756. MATHEMATICAL BALANCEMAKER. Jonathan Dakin, Mathematical Balance maker, at the Sign of the Hand & Beam, opposite to Dr. _Colman's_ Meeting House, makes all sorts of scale Beams, and likewise mends all that can be mended; where all Gentlemen may be supplied with Beams ready adjusted and scaled, as the Law directs.--_Boston Gazette_, Nov. 12, 1745. MATHEMATICAL INSTRUMENTS. Stephen Greenleaf, Mathematical Instrument-Maker, in _Queen Street_, Boston, opposite to the Prison, Makes and Mends all Sorts of Mathematical Instruments, as Theodolites, Spirit Levels, Semi circles, Circumferences, and Protractors, Horizontal and Equinoctial Sun Dials, Azimuth and Amplitude Compasses, Eliptical and Triangular Compasses, and all sorts of common Compasses, drawing Pens and Portagraions, Pensil Cases, and parallel Rulers, Squares and Bevils, Free Masons Jewels, with sundry other articles too tedious to mention. N.B. He sets Load Stones on Silver or Brass, after the best manner.--_Boston Gazette_, June 18, 1745. MUSICIAN. Thomas Androus, "the scholar musician, was there with his music," at John Androus house in Ipswich, in the summer of 1656, at a merriment.--_Essex Co. Court Records_, April, 1657.