France not only gave to Pittsburgh her site but the crucibles in which her fortunes lay. Bessemer was the son of a French artist living in London in poverty. Young Bessemer had invented many devices, when Napoleon III, one day in a conversation, complained to him that the metal used in making cannon was of poor quality and expensive. He began experiments in London at the Emperor's suggestion and later sent the Emperor a toy cannon of his own making. It was in this experimenting, as I infer, that the idea struck him of making malleable iron by introducing air into the fluid metal. But his first experiments were not particularly encouraging, and when he read a paper on the process of manufacturing steel without fuel before the British Association for the Advancement of Science, it is said that every British steelmaker roared with laughter at the "crazy Frenchman" and that it was voted not to mention his silly paper in the minutes of the association. [Footnote: "On the 13th of August, 1856, the author had the honor of reading a paper before the mechanical section of the British Association at Cheltenham. This paper, entitled 'The Manufacture of Malleable Iron and Steel without Fuel,' was the first account that appeared shadowing forth the important manufacture now generally known as the Bessemer process. "It was only through the earnest solicitation of Mr. George Rennie, the then president of the mechanical section of this association, that the invention was, at that early stage of its development, thus prominently brought forward; and when the author reflects on the amount of labor and expenditure of time and money that were found to be still necessary before any commercial results from the working of the process were obtained, he has no doubt whatever but that, if the paper at Cheltenham had not then been read, the important system of manufacture to which it gave rise would to this hour have been wholly unknown." Henry Bessemer, "On the Manufacture of Cast Steel: Its Progress and Employment as a Substitute for Wrought Iron." British Association for the Advancement of Science, Report, 1865. Mechanical Science Section, pp. 165- 6.] To-day, on the same authority, "there are more than a hundred Bessemer converters in the United States," and they "breathe iron into steel at the rate of eighteen billion pounds a year"--"two and a quarter millions of pounds every hour of the day and night."