Remarking on these, in In the above 68th Article, the “The Miners Friend,” Savery Marquis of W “A man _that tends says:--“So that P, No. 1, is by the work is but to turn two the external pressure of the cocks_, that _one vessel of water atmosphere, immediately refilled, being consumed, another begins to while P, No. 2, is emptying; force and refil with cold water_, which being done, you push the and so successively, the fire handle of the regulator from you, being _tended_ and kept constant, and throw the force on P, No. 1, which the self-same person may pulling the condensing pipe over likewise abundantly perform P, No. 2, causing the steam in between the necessity of _turning_ that vessel to condense, _so that the said cocks.” it fills while the other empties_. The labour of _turning these two And in No. 100, he says, parts_ of the engine, viz. the “a _child’s force_ bringeth up an regulator and water-cock, and hundred feet high, an incredible _tending the fire_, being no more quantity of water.” that what a _boy’s strength_ can perform for a day together * * * yet, after all, I would have men. * * *” We do not purpose to press any charge against Savery, but simply to relate what is on record respecting the engine he put forward; and to notice here the remarkable coincidence between his description, and that given by the Marquis 32 years before. The Marquis writes in the singular number of “_the fire_,” thereby indicating a single furnace; and in Savery’s first drawing we find the model represented with one furnace. Then in “The Miners Friend,” we have parts described agreeing precisely with the preceding article, No. 68. And at the particular point just quoted, we have even a closer analogy, in the use of the very same words in reference to the same parts--_turning_ and _tending_. And while, in No. 100, the Marquis informs us what “_a child’s force_” can perform; here Savery speaks of “_a boy’s strength_,” which is enlarged on, however, by recommending a man’s services. The next earliest notice we find of this engine is given by Richard Bradley, F.R.S., in his “New Improvements of Planting and Gardening,” 8vo. 1718, who, in the third part, at page 175, supplies an engraving of “the late Mr. Savory, F.R.S.,”[N] his engine, as set up by him “for that curious gentleman Mr. Balle of Cambden House.” It is represented as a spherical boiler, capable of holding forty gallons, supported on a tripod, with a fire on the ground underneath. It is connected with a bell-shaped receiver of thirteen gallons capacity, supplied below with a pipe sixteen feet long, and above with a pipe to elevate the water, forty-two feet. The steam pressure is stated to be capable of discharging fifty-two gallons per minute, the pipes being of three inches bore; and the original cost of the whole was £50.