1424. Iron: Black, for ships' guns, shots, &c.
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 lampblack, and three-quarters of a pound of copperas; stir it up at intervals for a couple of days. 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 woollen rag, and it will look like ebony.
1425. Paper and Parchment: Blue
- Stain the material green with the verdigris stain given in No. [1433], and brush over with a solution of pearlash—two ounces to the pint—till it becomes blue.
- Use the blue stain for wood.
1426. Paper and Parchment: Green and Red
The same as for wood.