In 1712 Newcomen and his partner, Cawley, contracted to erect an engine at Wolverhampton. Next they erected two engines near Newcastle. The fourth was put up at Leeds in 1714. The fifth was erected in Cornwall at Wheal Fortune in 1720, and was on a larger scale than any previously constructed, having a cylinder of nearly four feet in diameter, and its performance was regarded as extraordinary, since it made fifteen strokes a minute, and drew up at each stroke a hogshead of water from a depth of 180 feet.
Thomas Savery was a captain of military engineers in 1702, and in 1705 he published a translation of Cohorn's work on fortification. In the same year he was appointed Treasurer of the Hospital for Sick and Wounded Seamen. In 1714, by the favour of Prince George of Denmark, he was given the surveyorship to the waterworks at Hampton Court; but he died in the course of the following year, 15 May, 1715.
The date of Newcomen's death has been already mentioned. Engines of his pattern continued to be erected long after his death, till there was scarcely a tin or copper mine of any importance in Cornwall that had not one or more of such engines at work, and the gaunt and ugly ruins of the engine-houses disfigure the landscape throughout the mining districts of Cornwall.
In 1882 Louis Figuier produced a five-act play at the Gaieté in Paris on Denis Papin. According to this version, Papin, who was a Huguenot, having fled to London with his family after the Revocation of the Edict of Nantes, abandoned wife and family to go to Germany, there to pursue his scientific investigations. When skimming a pot, he noticed the force that raised the lid, and conceived the idea of the power of steam.
He next set about contriving a model of a steamboat,
