100 
Steam Engine, 
mate just mentioned, the power of a horse is rated, as we 
think it is, above the ordinary average, this circumstance 
cannot be complained of by the public, as it tends to repre- 
sent the advantage of the engines less than it will be found 
in real practice,” 
The following account ^Steam Engines, from Gre- 
gory’s Encyclopedia, being connected with the last plate 
of this number, I give it, though at the expence of some 
repetition, T. C, 
Engine, steam. The steam-engine is one of the no- 
blest monuments of human ingenuity. It was originally 
invented by the marquis of W orcester, in the reign of 
Charles IL This nobleman, who appears to have been 
possessed of much knowledge, with a fertile imagination, 
published in 1663, a small book, called “ A Century of 
Inventions,” giving an account of a hundred discoveries 
or contrivances of his own ; but the descriptions of many 
of them are altogether unintelligible. 
Among them is an account of his invention of raising 
water by the force of steam, which, now that we are pos- 
sessed of the engine, appears to agree very well with its 
construction. But as there is no plate to accompany his 
description, we are entirely unacquainted with the particu- 
lar mode in v/hich he applied the poorer of steam. It 
does not appear, however, that he met with sufficient en- 
couragement ; and this useful discoyery was long neglect- 
ed. 
Towards the end of the century, captain Savary, a per- 
son of great ingenuity, having probably seen the account 
of the marquis of Worcester’s invention, was convinced 
of its practicability, and succeeded in constructing a ma- 
chine of this kind. He obtained a patent for the inven- 
tion, and erected several steam-engines, n Iiich he descri- 
bed in a book entitled “ The Miner’s Friend/’ published 
in 1696. 
