14 



pliical Tmnsiiftionsof llie Roj-al S«KMety for 1832 coiiUiiriitig Mr. BsiilyV inuiiiuir 

 in wliicli a sories of oliiluimU' i-xiH-rimciits to iV'torminf this correction are Jc* 

 iMilx'il. Among tlic many [«.'mltihiins wliich lie iiswl, wius one, "No 22" wliicli. 

 in font! and dinii'nsion«, rcsenililcs that used liere nincli inoii- closely and tin* 

 rcsnlts of his exiHjrinicnts witli it confinn the occunicy of tlic osBninptions ma«Kv 

 It wi'l ho rcnienil>orod that, as all results an- rediicoil to the Tokio conditions, 

 tlic correction is to In' made for only alniut one tliinl of an atniosjihere so tliat, 

 although inijiortjuit, it is loss so than if the reduction had Iwen to a vacuum. It 

 is liclieved, therefore, that the correction apiilie<t is not far wrong. 



The competed time, therefore, is obttineil as follows;— 

 time on the summit of Fujiyama, teini>cniture8"..')— Iwrometer 19.5 inches,— 



t = l.(XKJl4t; 



temi)erature correction = fX)«)14<) 



air c.rroction = .0<y>")5O 



eoTCCted time. — 



t., = l.(X)033(; 



Now letting ^|, '^ and (/,, ;/ , represent the time ijf \ ihr.itioii and lori-e nl 

 gravity at Tokio and on the summit of Fnjinoyama res|»ecfively «<■ h iv.- 



'Ji <i 



Hi = q 



Assuming the force of gravity at Tiikii> to lie, as previously determine«!,— 



,/, = 9,70S4 

 it follows that on the sinnmit of Fnjinoyama 



./, = 9.788« 



