Other steam devices are described by Hero. By one a horn was blown, and by another figures were made to dance upon an altar. But there is no trace in the ancient world of the application of steam to an important useful purpose. Professor Thurston of Hoboken, in his excellent work upon the "History of the Steam-Engine," has gleaned from the literature of the last seven hundred years several interesting allusions to the nature and power of steam. In 1125 there was, it appears, at Rheims in France, some sort of contrivance for blowing a church organ by the aid of steam. There is an allusion, also, in a French sermon of 1571, to the awful power in volcanic eruptions of a small quantity of confined steam. There are traces of steam being made to turn a spit upon which meat was roasted. An early French writer mentions the experiment of exploding a bomb-shell nearly filled with water by putting it into a fire. In 1630 King Charles the First of England granted to David Ramseye a patent for nine different contrivances, among which were the following:-- "To raise water from low pits by fire. To make any sort of mills to go on standing waters by continual motion without help of wind, water, or horse. To make boats, ships, and barges to go against strong wind and tide. To raise water from mines and coal pits by a way never yet in use." This was in 1630, which was about the date of the Marquis of Worcester's engine. It is possible, however, that these devices existed only in the imagination of the inventor. The marquis was then twenty-nine years of age, and as he was curious in matters of science, it is highly probable that he was acquainted with this patent, and may have conversed with the inventor. It is strange how little we know of a man so important as the Marquis of Worcester in our modern industrial development. I believe that not one of the histories of England mentions him, and scarcely anything is known of the circumstances that led to his experimenting with steam. Living in a county of coal and iron mines, and his own property consisting very much in coal lands, his attention must of necessity have been called to the difficulties experienced by the miners in pumping the water from the deep mines. There were mines which employed as many as five hundred horses in pumping out the water, and it was a thing of frequent occurrence for a productive mine to be abandoned because the whole revenue was absorbed in clearing it of water. This inventor was perhaps the man in England who had the greatest interest in the contrivance to which in early life he turned his mind.