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[ 16 ] great advantage as in France, Germany, or the East-Indies.
METHOD OF MAKING SALT-PETRE AT HANOVER, 1766. THE Salt-Petre works are within two miles of the town---they consist of a house that had probably been an old wooden barn, it had an earthen floor---on one side within, stood a row of casks open at top, filled with earth, and under each cask a tub to receive what water passed thro' the earth in the casks---
