24 
CAPTAIN W. DE W. ABNEY ON THE TRANSMISSION 
CO 
a 
a 
o 
00 
o 
44 
CO 
c3 
o 
_g 
i 2 
d f 3 
o o 
F-- -+^ 
c3 cl 
o:> 
oq 
CO 
CO 
CO 
CO 
lO) 
00 
00 
d 
-1-3 
CO 
Q 
hJ 
-ci 
w 
Q 
12 ; 
I—I 
O 
1 
So 
O H 0^ 
n3 a . 
<H .PC 
O 
!^ 
CO 
O 
pH 
o 
o 
o 
o 
OJ 
CO 
CO 
oi 
CO 
I-O 
9. 
^ (D 
OT 
CC 
U 
fl o 
03 
O 
-+J 
Pi 
i=i U 
>4 
^ q_i 
P 
P ^ 
r- *02 
<M O 
o o o 
rs. o CO o 
oq 00 o 
^ cq 
1> O 
>••5 0 
CO O 
CM r—1 O 
CO CO ^ 
00 <r> 00 
O .-H 
iO> iO »—1 liO 
'3 -S 
1—! 
T—i oq CO 
rH CO 
rH Tfl 
oq O 
1—1 CO 
cr' c 
H 
Depth of 
tint. 
Wliite 
= •100. 
oq lO 
CO cb 
CO rH 
iO Oi rH 
^ oq pq 
lo qq 
6q cb Oi rH 
CO CO CO oq 
ip qq ip 
cb cb 
1-0 CO rH 
lO CM 
O CM 
OO T—l 
lO Ip 
CO ir^ CO 
CO CO rH CO 
Ail- 
thickness, 
that of ZD 
being I. 
2-49 
1-90 
1-26 
i-24 
1-50 
1 4*04 
1 
Barometer, 
pressure 
in inches. 
cb 
Ol 
o i 
rj 
CO 
lO) 
. ! 
4-0 
H 1 
CO 
oi 
^ I-O 
O 
-J 
CO 
o 
CO 
o 
p^ o g 
M P O 
p=^ g g 
CO 
00 o 
r-i 
o o o 
r -1 oq pq 
lO O Ci C5 
o o o 
r-H CO 
xO O 
o o o o 
rH CO CO CO 
6 
t+-i 
o 
5 
CO 
6 
o 
CL, 
M 
o 
' oq CO 
Tf^ iO CO 
00 o 
Ol CO 
CO CO Ci 
