If any brewer for sale shall conceal any worts or beer so as to prevent any officer from taking an account thereof, or shall mix any sugar with any worts or beer so as to increase the quantity or gravity thereof after an account of such worts or beer has been taken by an officer and the duty has been charged thereon, he shall, for every such offence, incur a fine of one hundred pounds, and the worts or beer in respect of which the offence is committed, together with the vessels containing the same, shall be forfeited.