— Dissolve Copper from Gold Articles, [382]
To Distinguish Cotton from Linen, [246]
— — Genuine Diamonds, [260]
— — Glue and Other Adhesives, [378]
— — Iron from Steel, [427]
— — Steel from Iron, [687]
— Do Away with Wiping Dishes, [399]
— Drain a Refrigerator, [616]
— Drill Optical Glass, [372]
— Dye Copper Parts Violet and Orange, [221]