How Savery was led to the study of the power of steam has been differently stated. Desaguliers says his own account was this,--that having drunk a flask of Florence at a tavern, and thrown the empty flask on the fire, he called for a basin of water to wash his hands, and perceiving that the little wine left in the flask had changed to steam, he took the vessel by the neck and plunged its mouth into the water in the basin, when, the steam being condensed, the water was immediately driven up into the flask by the pressure of the atmosphere. Desaguliers disbelieved this account, but admits that Savery made many experiments upon the powers of steam, and eventually succeeded in making several engines “which raised water very well.” Switzer, who was on intimate terms with Savery, gives another account. He says the first hint from which he took the engine was from a tobacco-pipe, which he immersed in water to wash or cool it; when he discovered by the rarefaction of the air in the tube by the heat or steam, and the gravitation or pressure of the exterior air on the condensation of the latter, that the water was made to spring through the tube of the pipe in a most surprising manner;[28] and that this phenomenon induced him to search for the rationale, and to prosecute a series of experiments which issued in the invention of his fire-engine. However Savery may have obtained his first idea of the expansion and condensation of steam, and of atmospheric pressure, it is certain that the subject occupied his attention for many years. He had the usual difficulties to encounter in dealing with a wholly new and untried power, in contriving the novel mechanism through which it was to work, and of getting his contrivances executed by the hands of mechanics necessarily unaccustomed to such kind of work. “Though I was obliged,” he says, “to encounter the oddest and almost insuperable difficulties, I spared neither time, pains, nor money, till I had absolutely conquered them.” [28] Switzer, ‘System of Hydrostaticks and Hydraulicks,’ London, 1729. Having sufficiently matured his design, he had a model of his new “Fire Engine,” as he termed it, made for exhibition before the King at Hampton Court in 1698. William III., who was himself of a mechanical turn, was highly pleased with the ingenuity displayed in Savery’s engine, as well as with its efficient action, and he permitted the inventor to dedicate to him ‘The Miner’s Friend,’ containing the first published description of his invention. The King also promoted Savery’s application for a Patent, which was secured in July, 1698,[29] and an Act confirming it was passed in the following year.