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in case the quantity of hard soap, afterwards produced therefrom, shall be found by the gauge in the frames to be less than ought to have been produced according to the rates and proportions herein before mentioned, then the deficiency therein shall be charged with the duties thereupon, according to the rates and proportions herein before mentioned: Provided always, That if any maker of soap shall have charged the copper or boiler with rough fat or rough kitchen grease, then eight pounds of rough fat shall be deemed equal to seven pounds of tallow, and five pounds of rough kitchen grease shall be deemed equal to four pounds of clean kitchen grease.
And be it further enacted, by the authority aforesaid, That no maker or makers of hard soap shall, after the 20th day of September 1784, sell any hard soap but in the shape or form of cakes or bars, or what
