INDEX Gentleman's Magazine - Gunpowder June 1740. Volume 10. Friday, 20. - Complaint having been made to the Lords of the Admiralty that the Gunpowder used by the 3 Men of War when they took the Princessa was weaker than the Powder taken in the said Ship in Proportion of 7 to 12, it was thought proper to make a publick Tryal; in order thereto some Gunpowder was taken out of each of the above 4 Ships, put into 4 Boxes at Portsmouth which were sealed up by some Officers of the Navy and Ordnance, and sent to Town, and...