[ 39 ] mill. Put in a few pounds at a time, and let it be rolled as above, which will make the Powder smooth; then sift it in the finest sieve, till the fine parts that work off the barrel pass through the sieve, which is to be returned again into the mor- tar. THe Powder must be put in flat trays or dishes, and set by to dry either in a small room kept warm with a large stove, or, if the weather be dry, in the shining of the sun.
I therefore most heartily recommend to the good people of this continent to enter into these necessary businesses with spirit, being well assured, that a greater quantity may with ease, be made than will be needed for our own consumption, even admitting the times to be worse than the threats of the British administration would lead us to expect.
Any person inclining to build a Powder-mill will be shewn a plan, with directions for the con- struction of all its parts and utensils, by applying to their very humble servant.
HENRY WISNER
F I N I S
