Note 30 — Chapter XV · THE POWER OF THE TRAINED HAND.

“The first patent of Sir H. Bessemer in which air is mentioned as the oxidizing agent is dated October 17, 1855, and other three months were spent in experimenting before the idea of introducing the air from the bottom of a large converter struck him. The patent embodying the latter idea is dated February 11, 1856.”—“The Creators of the Age of Steel,” note to p. 38. By W. T. Jeans. New York: Charles Scribner’s Sons, 1884.