248 
MESSRS. R, T. GLAZEBROOIv AND J. M. DODDS ON THE 
t 0 = 14°'6 a= '0003 
r =-C007 X=-0159 
a = 259 centims. 
p= -000072 ohm. 
S + Y 3073-39 
V “1-0167 
while giving p and q their mean values for the whole series of experiments, the term 
r , n» 3 —8o ,3 i 
< 1 + —f comes to 1-0018 
As we have explained, the value of M is slightly different for each of the four 
positions. 
The methods used to determine have been explained ; the values obtained were 
M : = 1-55636 
M 3 = 1-55430 
M 3 = 1-55539 
Mj = 1-55744 
where the suffixes refer to the positions. 
Table II. gives the results of the calculations. As the results stand there, the 
negative errors are fewer in number than the positive, the two greatest errors being- 
negative. 
The greatest of these is '453, which is about 1 part in 350. 
Table II. 
Position. 
I- < 
II. 
III. 
IV. 
/ 
R 0 in ohms. 
Error from 
Mean value of 
Error from 
Percentage 
mean of set. 
R 0 for each position. 
mean of whole. 
error. 
158-82 
•147 
1 
158-98 
•307 
158-84 
158-48 
•167 
-■193 
158-673 
| 
•047 
•029 
158-70 
•037 
I 
158-22 
-•453 
J 
- 
158-27 
— •297 
1 
158-68 
•103 
> 158-567 
—■059 
-■039 
158-76 
•193 
J 
158-69 
•093 
1 
158-77 
•173 
> 158-597 
-•029 
-•018 
158-33 
-■267 
J 
158-87 
•241 
1 
158-51 
-119 
> 158-629 
•003 
+ -002 
158-51 
-•119 
J 
Mean value.158'626 ohms. 
Mean error of mean of each from mean of whole . . '037 
Mean percentage error .. "023 
