( XVI 
) 
Weight of Vapour 
in a 
Cubic Foot of Air. 
Diff. from 
average of 
27 years. 
H b b b 
b 
M u^ o 
b, b b b 
b 
d 
& n rt 
»^ 
. o o> N 
^ t-n 
*^ 
Elastic Force 
of Vapour. 
Diff. from 
average of 
27 years. 
d o p ? 
" 1 + + 
00 
o 
o 
+ 
0^ vD »0 
o ^ o 
c o o _o 
+ 4- + 
O 
O 
+ 
a 
el 
M M 
.53 M n M 
M OO 
d ^ ^ ^ 
<s 
Temperature of 
Water 
of the 
Thames. 
oo 
rA 
rt o O 
VTN 
« 
to 
a 
(2 
>, 
"5 
Q 
i 
Diff. from 
average of 
27 years. 
O H M M 
1 + + 
O 
+ 
+ + + 
O 
+ 
a 
as 
V 
O OO O 
" OO rj- 
i-( r< (N 
<N 
s 
"o 
PL, 
& 
Q 
Diff. from 
average of 
27 years. 
O M ri 
1 + + 
O 
+ 
u^ O 
n O o 
+ + + 
+ 
§ 
(N-i ri^ 
0 -'-I r--- CO 
f-A r/^ 
O 
o ' L_ ■ 
'-' c> — 
'4- »^ 
s 
o 
CJ 
o 
CJ 
>■ 
Diff. from 
average of 
27 years. 
H IS 
M tA n 
° 1 + + 
M 
+ 
IH OO 
° + + + 
+ 
d 
g 
o ^ 
O ,/^ o " 
^ 
O O 
" fv> o 
tJ- 
».ri 
Diff. from 
average of 
27 years. 
b r» 
O 
-f- 
O 
U 
4- _j_ 4- 
OO 
-|- 
Diff. from 
average of 
97 years. 
O so H 
+ + + 
o 
+ 
fS OO Ov 
4- + + 
+ 
i 
s 
r> O O 
o . • . 
° i) 'r- ^ 
^ 
CO 
1868. 
Months. 
January .. 
February .. 
March 
a 
<I3 ^ 
fl 
