24 6 
MESSRS. R. T. GLAZEBROOK AND J. M. DODDS ON THE 
_£>] = 454*75 — 231'45 —22 3'3 
j\— 231-45- 7-4 =224-05 
While for the second throw the zero is 230'7, and the values are 
^ = 454-1—230-7 =223-4 
p,= 230-7— 6-25 = 224-45 
Thus the mean value of jq for the experiment is 
and of p 2 
223-35 
224-25 
These numbers require correcting for scale error. 
The correction to p x is 
+ 1-2 
that to p 2 is 
+ 1-0 
so that 
2 ^ = 224*55 millims. 
£>.,= 225"25 millims. 
The difference between them being only '7 millim. it is clear that the adjustments 
are all right. 
Before taking the deflections the zero reading was 231*5, after taking them it had 
become 230-8. Thus interpolating, the zero reading at the moment of the deflection 
to the left was 231 "3, and we find 
go = 231-3 —91-0=140-3 
while at the moment of the deflection to the right the zero reading was 231'], and, 
hence, 
p 1 = 370-9 —231-1 = 139-8 
Correcting- for scale error we have 
c * 1 
We have also 
= 140*6 millims. 
q 2 = 141" 1 millims. 
R 
Mean value of temperatures — 
13°-65 S 13°-7 Galv. 14°-65 
Mean value x 
x 
565 
475 
33 
