In Committee of Safety during the recess of the Provincial Congress, January 17th, 1776 -- In Congress, Philadelphia, July 18, 1775 -- Method of making salt-petre at Hanover, 1766 -- The process for extracting and refining salt-petre according to the method practised at the provincial works in Philadelphia -- Experiments made by Capt. Pryor and Mr. Thomas Pain for the purpose of fixing some easy, cheap, and expeditious method of making salt-petre in private families in order to shew the practicability of a plan proposed by Mr. Pain of forming a salt-petre association for voluntarily supplying the public magazines with gun-powder -- An excellent method of making gun-powder