1718. Iron.—Black, for Ship's Guns, Shot, etc.—To one gallon of vinegar add a quarter of a pound of iron rust, let it stand for a week; then add a pound of dry lamp-black, and three-quarters of a pound of copperas; stir it up for a couple of days.
1719. Lay five or six coats on the gun, &c., with a sponge, allowing it to dry well between each. Polish with linseed oil and soft woolen rag, and it will look like ebony.
1720. Paper and Parchment.—Blue.—Stain it green with the verdigris stain given below, and brush over with a solution of pearlash—two ounces to the pint—till it becomes blue.
1721. Use the blue stain for wood.
1722. Green and Red.—The same as for wood. (See 717, [page 178.])