The great demand for rubbish of a villanous description during the existence of the slave trade, induced some philanthropic gentlemen in Birmingham to found a Company, with suitable premises, for the proof of all gun barrels; and an Act of Parliament was obtained in the year 1813, incorporating the body. The first Act proved insufficient, as the Birmingham makers found easy means of evading it; so they had to obtain a fresh Act in 1815, by which parties receiving any barrel to rib, stock, &c., without its having previously been proved, became liable to a penalty of twenty pounds, and not less than twenty shillings: it also enacted that any person or persons making and selling any gun, the barrels of which had not been proved at either this or the London proof-house, became liable to the same penalty; and it further enacted, that any person or persons forging the stamps or marks of either of the two proof-houses, should be liable to the same penalties, and in default of payment, to a certain term of imprisonment, &c. It also ordered, that all barrels be proved with the quantity of powder in proportion to the various bores enumerated in the table. The severe, but just, strictures cast upon the lax nature of this Act of Parliament, and the equally lax way in which its provisions were carried out (individual benefit being held to be the most important element in the interpretation), imperatively called for an immediate improvement. The heavy denunciations which I felt bound to visit on the defective working of this “miscalled proof of gun barrels” in my former works, at length opened the eyes, not only of the sportsman and the trade, but also of the Government; and (I believe in 1854) it was intimated to the proof companies of London and Birmingham that the time had arrived “_when gun barrels should be proved in reality_;” and that if the initiative was not taken by the trade, the Government were prepared to introduce a public Act of Parliament for that purpose. The natural consequence followed, and in 1855 an Act was passed entitled “The Gun Barrel Proof Act 1855,” by which most extensive powers are delegated to the two companies. The clause of most vital importance enacts that all gun barrels shall be proved twice; first in the rough, which is called provisional proof; and secondly, when the barrels are soldered together, breeched, and percussioned. Thus, in a comparatively finished state, when all the necessary reductions and other operations have been effected, the barrels become properly tested. Not only the metal of the barrels and the soundness of the breeches, but the screwing in of the nipples is proved--a most important check on a very important branch of workmanship, and which if imperfectly done renders the gun dangerous. The first regulation enacts that “barrels are not to be made up unless proved, and marked as proved.” 2nd. Small arms are not to be sold or exported unless proved, and marked as proved.