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Show [ 26 ] Fear's feeble hand direB:s the fiery darts, And Strength and Courage yield to che1nic arts; Guilt with pale brow the mimic thunder owns, And Tyrants tre1nble on their blood-fiain' d thrones. VI. '' NYMPHs! you erewhile on fimmering cauldrons play'd, And call' d deljghted SAVERY to your aid ; Delighted Savery. l. 254· The invention of the fteam-engine for raifing water by the preiTure of the air in confequence of the condenfation of fteam, is properly afcribed to Capt. Savery; a plate and defcription of this machine is given in Harris's Lexicon Technicum, art. Engine. Though the Marquis of Worcdl:er in his Century of Inventions printed in the year r663 had defcribed an engine for raiflng water by the explofive power of fieam long before Savery's. Mr. Defaguliers affirms, that Savery bought up all he could procure of the books of the Marquis of W orcefier, and defiroyed them, profeffing himfelfthen to have difcovercd the power of ficam by accident, which feems to have been an unfounded flander. Savery applied it to the raifing of water to furply houfes and gardens, but could not accomplifh the draining of mines by it. Which was afterwards done by Mr. Newcomen and Mr. J ohn Cowley at Dartmouth, in the year 1712, who aduccl the pifl:on. A few years ago Mr. Watt of Glafgow much improved this machine, and with Mr. Boulton of Birmingham has applied it to a vari ety of purpofes, fllch as raifing water from mines, blow'ing bellows to fufe the ore, fupplying towns with water, grinding corn, and many other purpofes. There is reafon to believe it may in time be applied to the rowing of barges, and the moving of carri:~ges along the road. As tht,; fpccific levity of air is too great for the fupport of ~reat burt hem by balloons, there feems no probable method of flying conveniently but by the power of fieam , or fame other explofive material ; which another half century may probably difcover. See additional notes, No. XI. •• [ 27 Bade_ round the youth explofive STEAM afpire In gathering clouds, and wing' d the wave with fire ; Bade with cold {heams the quick expanfion flop, And funk the immenfe of vapour to a drop.- Prefs' d by the ponderous air the Pifton falls Refifilcfs, fliding through it's iron walls ; Quick 1noves the balanced bea1n, of giant-birth, \Vields his large limbs, and nodding iliakes the earth. '' The Giant-Power from earth's remotefi caves Lifts with fl:rong ann her dark reluCtant waves ; Each cavern' d rock, and hidden den explores, 2 65 Drags her dark coals, and digs her iliining ores.Next, in clofe cells of ribbed oak confined, Gale after gale) He crowds the firuggling wind ; The imprifun' d fionns through brazen nofirils roar, Fan the white flame, and fufe the fparkling ore. 270 Here high in air the ri:Gng firean1 He pours To clay- built cifierns, or to lead-lined towers |
