Page:History of the Royal Society.djvu/309

Rh themselves, and serve for Cannon Powder. The lower Sieve is called the Dry-duster, and retains the small corns (which serve for Musquet and Pistol) and lets fall the dust into the Bin, which is to be mingled with fresh Materials, and again wrought over in the Mill.

'So that good Powder differs from bad (besides the well working and mingling of the Materials) in having more Peter and less Coal; and lastly, in the well dufting of it.

The last Work is to put the Powder into Barrels; every Barrel is to contain five score weight of Powder, and then 'tis ready for sale.



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