1\% Jixpirimtnii if ofcertoin 



I then reftored the equilibrium, by putting into (he oppofite or left-hand grains. 



common fcale, Mr. Troughton's weights, No. 10. - -. ~ =512,00 



(The barbm. ftanding at 29,47 inches, 200, 



tiie therm, at 6o'',2.) ■ ' 30, 



grams. 



3>7o 



But a counterpoife of - - - - 400 T 745>70 



hnvinnr Kf»^n f^Irf»n_ \w mift-at-/* inn-parl nf «■ 4.4.2,7 C ! 



r = — 42,75 



= 42.7sJ 



having been taken, by miftake, inllead of - 44^,75 1 _ 



DeduiSt the difference, which was f<J left out 



The apparent weight of the cube in water becomes _ - -i ~ 702,9S 



Add the corredion * for the lofs of weight of the 4 wires, by im-1 



merfion 2^ inches deeper than when the counterpoife was ad-V = + ,08 



jufted - - - - - 3 



And the true correded weight of the cube in water, with 6o*,2 of heat? 



becomes - - - - - ^7 3>.> 



(§. 23.) Experiment of the Cylinder in dijlilled Water. 

 Sept. 5. The thermometer being at from 6o°,2 to 6o°,5, and the barometer 29,47 inches, 



grams. 



Put into the left fcale pan, the counterpoife to the water-fcale for the cy- . 



Under - - - - - - . M 100 > = 441,7 



C300 7 



4 100 J- = 441,7 



L 4i>73 



The cylinder, with its water-fcale, was immerfed in water. I then reftored the equili* 

 brium, by putting into the left fcale, 



grains. 



Mr. Troughton's weights, No. 12 - » - .. = 2048 



No. 9 » . - . = 256 



200 



30 



10 



4 

 1,10 



Weight of the cylinder in water « • - * - =2549,10 



* Wlien the cube was immerfed, tlie water in the glafs jar ftood 2j inches higher than when the counter- 

 poife for this water-fcale was adjufted, and found to be 442,7; grains ((ee §. iS.) 5 and 1 inch of alteration in 

 the height of the water having appeared to be = 0,0354 grain in weight (§. 19.), i\ inches will be = 0,07s 

 ^rain ; and fo much mull be added, to correft for the lofs of weight in the four wires that fufpended the 

 fcale and cube in water. When the cube was immerfed, the furface of the water ftood 1,5 inch below the 

 top of the glafs jar, and 9,7 inch below the centre of the beam, or index point. 



When the cube was iji the water, the beam was clearly fcnfible with ^ of a gra'n. 



Add 



