1878.] using the Balance ivith great delicacy, fyc. 25 



IV. — June 14. — Determination of 1 Value of Scale Division. 



Rider on 

 beam. 



Extremities of 

 oscillations. 



Resting point. 



Mean of pre- 

 ceding and 

 succeeding 



resting points. 



Differences 

 due to R — L. 



R 



252-5 



253-4 

 2517 



252-5 



This was taken 

 tering the rc 

 much lower 

 ceeding that 



soon after en- 

 >om. It is so 

 than the suc- 

 it is rejected. 



L 



290 -8 



273-7 

 288-8 



281 -75 







R 



242-4 



266 7 

 245-1 



255-22 



281 '96 



26 -74 



L 



272-6 



289-7 

 276-7 



282 -17 



255-89 



26-28 



R 



252 -8 



253-9 

 258 -7 



256 '57 



282 67 



26-10 



L 



286-2 



280-0 

 286-5 



283-17 







Mean R— L = 26*37 division. 



1 division=^?? = '01244. 

 26-37 



Being interrupted, I could not continue the series of rider determi- 

 nations farther. 



