MISCELLANEOUS PAPERS. 



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defcriptlon of a SELF-MOVING 



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rlSTER, invented by William Henry of Lane after. 



EIE machine confifls of the following parts : 

 1, Aj A door or common regifter, applied in the flue 

 of a furnace. The door is fitted in a frame, and made to 

 flideeafily up and down. Plate VL Fig. i. 



2. By a balance or beam, moving on a center; the two 

 arms are of unequal lengths, the longer exceeding the 

 fhorter in the proportion of two to one; the extremity of 

 each arm is formed into a fegment of a circle, whofe radius 

 is equal in length to each refpedive arm. Thefe fegments 

 muft be equal to the greateft rife or fall of each end of the 

 balance when in ufe. 



The length of the whole beam or balance muft be re- 

 gulated by the fituation of the regifter Aj and the copper 

 C, hereafter mentioned. 



3. C A copper veftel, about 13 inches diameter, and 

 10 inches deep, with a double bottom and fides, which 

 are placed about an inch and a half apart from each other 



Vol. I 



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leaving 



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In ENGLISH ruus: 



Pofterity, pofterity, this is your concern. 

 One day enlightens the next, that next 



improves the third. 

 Bo attentive. 

 Twenty times, fincc the creation of the Sun, 

 has Vefuvius blazed, never without a horrid 

 deltrVidion of thofc, that hefuated tofly. 

 This is a warninjr, that it may never 



fcizeyou uiiLLppiized. 

 The wombof thi» mountain is pregnant with 

 bitumen, alum, iron, gold, filver, nitre 



and fountains of water. 

 Sooner or later it kindles, and, when the fea 

 ruflu'sin, wiU give its hirth vent. 

 But, hefnre its labours come on, itislhaken, 

 and fliakep the earth round it j iiuokcs, gleams, 

 throws up bickering flames, fliakes tlie air, 

 roars horridly^ bellows, thunders, drivesthc 



inhabitants from its quarters. 

 Retire whilft you may; 

 Now, now, its throes come on, itbuifts out, * 



it flings up Jakes mixt with fire; 

 Down, down it rufiu's and precipitate 

 Prevents your tardy_ flight, and flamps your fate : 

 If it once lurprlzesyou, all is over. 

 If you are wife, hear thisfpeakihg flonc. 

 NcgU'ft your domeftic concerns, negled your 

 goods and chattels, there is no delaying; 

 ■r ■ Fly. 



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