Above Grindelwald towards Faulhorn, 25tli December, 1890. 
38 CAPTAIN W. DE W. ABNEY ON THE TRANSMISSION 
Xfl 
c: 
a 
o 
o- 
> 
O 
CO 
Zu 
•43 .bJO 
ce, 
o 
pq 
Calculated 
intensity. 
10 
c 2 o 
»— 1 
lO) 
cb 
rH 
lO) 
rH 
9-7 
iC 
Adopted 
mean 
intensity 
fm* 10 sec. 
exposure. 
17-7 
0 
60 
10) 
cb 
rH 
lO) 
rH 
9-7 
47 
Intensity 
for 10 sec. 
exposure. 
•TO --p p> (01 
(X) 
rH rH rH 
cp CO 
X 60 
1—1 r—1 
Ip 
x> cb X CO 
-H rH rH rH 
10 i-O 
A -if 
r-1 rH rH 
IN ip 
cc> <0 cn> 
rH 
IN JO) 
10 ) 
Equivalent 
in 
intensity. 
CO CO CO Ol 
CM 10 10 X 
XO X 
iO 01 
I> CO ^ 01 
rH CO lO) CO 
0 X CO 
CO lO) X 
lO) IN 
oq Tfi jlo 
lO) X 
rH CM Ol 
1 
Depth of 
tint. 
White, 
= T 00 . 
ip CO CO 
6^ (CO CO CD 
X iO 10 ) CO 
oq 0 
lO) X 
ip !>• ip 
lO) cb (>i 6 j 
O i i>“ O !>• 
lO lO) 
a: CO 
IN, ^ X 
IN 
Ci 0 0 
IN CO lO) 
ip 
IN lb IN 
05 X X 
1 
Air 
thickness, 
that of ZD 
being 1 . 
cq 
CO 
cb 
X 
CO 
lOl 
In 
Barometer, 
pressure 
in inches. 
1 
-ff 
CM 
Time. 
1 
i 
1 
12.0 
12.25 
1 
1.30 
2.0 
2.40 
X 
cb 
! 0 ^ 
Ph S 
X ^ 0 
iO> 0 0 lO) 
1 —1 CO CO 
0 iO 
X rH 
0000 
rH Oq X CM 
000 
CM CD 
0 lO 0 
X ^ CO 
000 
X CO CD 
No. ol 
exposure. 
r-' Ol CO 
10 ) CO 
X 0 
rH 
(—1 CM CO 
rH rH rH 
14 
lO) CO IN 
rH rH rH 
X 05 0 
rH CM 
