FOOTNOTES:

[1] Brannt. Animal and Vegetable Fats and Oils.

[2] Brannt. Animal and Vegetable Fats and Oils.

[3] Crew; Practical Treatise on Petroleum. Lesquereaux; Transactions American Philosophical Society. Winchell; Sketches of Creation. Henry; Early and Later History of Petroleum.

[4] Crew. Practical Treatise on Petroleum.