Comparison of with the French Standards. 
430 
MR. E. H. GRIFFITHS ON THE VALUE OF 
iO' 
o 
rH 
iO 
rH 
iO 
lO 
^o 
CO 
IN 
o 
1 1 1 1 '-P *F 
iO) 
o 
CO 
iO iO> 
ib 
ib 
lb 
ib 
iO 
(M CM 
01 
CM 
CM 
M 
V 
O GO 
05 
iO 
<M 
IN 
CO 
iO 
o 
1 1 1 1 
I> 
CO 
CO 
o 
o 
iO 
<M CM 
oi 
<M 
Ol 
CM 
JiO 
O 00 
Oi 
00 
CX) 
rH 
CO 
1 1 i 1 ^ CO 
CO 
lO 
O 
o 
1 1 I 1 
rH 
o 
o 
o 
o 
CO ot> 
CO 
cb 
sb 
(M Ol 
Ol 
<M 
M 
HH 
HH 
> 
X 
<M 
ip 
GO CM 
o 
rH 
lO 
CM 1 1 1 CO , 
CO 
lO 
o 
lO 
o 
IN. 
I 1 1 ® 1 
OC' 
IN 
3 
IN 
o 
o 
1-^ rH 
rH 
rH 
c3 
CO 
Ol (M 
CM 
CM 
CM 
H 
o 
o 
<M 
c3 
6 
CO 
CO 
ip 
cS 
^ ^ uO 
IN 
CO 
JN 
o 
•^1 1 ^ 1 
'cfl 
iO 
CO 
o 
I> 
cc 
lO lO lO 1 
lO 
m 
c3 
o 
CO 
o 
■CO 
o o o 
<b 
o 
o 
-4.3 
o 
OJ <01 CM 
OJ 
a; 
be 
Ol 
pp 
s 
CM 
s 
CM 
o 
b£) 
o 
o 
a 
u 
1 
iC 
i-H 
t-H 
00 
GO 
o 
"-0 
00 
O 
r 
IN. 
CO 
JZ 
Oi 
o 
<X> 
(M 
O 
-HJ 
?-H 
-tJ 
rH 
o 
C<J 
-+^ 
p 
Oi 
rH 
Oi 
rH 
Gi 
rH 
o 
CTw 
rH 
a 
6i 
rH 
a 
0 
g 
o 
O 
-4.3 
ip 
o 
iO 
iO 
o 
CO 
I 1 1 1 1 
'f 
© 
O 
JN 
00 
o 
jlC 
CM 
S 
o 
1 1 1 P* 1 1 
oo 
(M 
00 
rH 
o 
fi 
0) 
M 
rH 
<X) 
rH 
0 
< 
rH 
00 
rH 
a 
o 
rH 
00 
rH 
o 
'll 
o 
0 
ip 
05 (X) 
Oi 
CM 
rH 
• rH 
IN 
CO 
1 1 1 1 
IN. 
CO 
a 
00 
o 
oi 1 
(M 
rH 
rH 
rH 
o 
IN 
IN 
-+=> 
tb 
rH rH 
rH 
rH 
O 
t-H 
n:: 
00 
o5 
ip 
O 05 
o 
CO 
CO 
oT 
00 
lO 
. CO 1 »0 , 1 
CO 
Oi 
Ci 
o 
1 CM 1 (M 1 
CM 
rH 
rH 
T—' 
o 
cb cb 
cb 
cb 
i. 
cb 
■ 
nH 
rH 
rH 
rH 
ip 
CM O CO 
(M 
M 
O 
iO 
lO 
, CM 01 01 , , 
<M 
iit> 
CO 
CO 
o 
1 o o o 1 1 
O 
Oi 
Oi 
o 
lio iO iO 
ib 
rH rH rH 
rH 
rH 
rH 
rH 
T?< iO 
!>. 
lO 
o 
iO 
ifO 
IN 
00 
Oi 
o 
1^ 
1 P ?' 9 1 1 
o 
<:y5 
Oi 
Oi 
o 
00 
cb 
cb 
cb 
rH rH 
rH 
i 
^H 
rH 
. 
X 
s 
PJ 
w 
o; 
• 
tD 
c 
ti X 
Hr* 
rC O 
HH 
c3 
<v 
Ph 
iO cr> 00 Oi 
> 
0) rO 
rH rH rH rH —H rH 
X 
fi H 
Oi 
^ ^ ^ ^ 
— 
s- ^ 
O r 
C3 
^5 
^ 5 
Mean difference N—XVII = - -0055. 
Mean discrepancy from the mean ± 'OOll. 
Diffeienco in range between 14° and 25° : '001. 
