( vra ) 
Weight of Vapour 
In a Cubic Foot of 
Air. 
Diff. from 
average of 
40 years. 
E o o o 
S= + + + 
1.0 + 
vD vO M 
2 b b b 
1 + 1 
O.O 
d 
s 
^ oo -"l- 
M V V V 
O ^ »r\ 
^ r< 
ON 
<^ 
Elastic Force 
of Vapour. 
Diff. from 
average of 
40 years. 
vr> <^ 
r< O M 
3 ? ? ? 
""bob 
+ + + 
<^ 
o 
o 
+ 
0 t~- O 
.GOO 
B o o o 
1 1 1 
1 1 1 
o 
o 
b 
1 
1 
d 
S 
Tj- 
""bob 
b 
NO O M 
"" o o b 
O 
\o 
b 
j Temperature of 
Water 
of the 
Thames. 
o I I I 
o '. '. '. 
Air— Daily Range. 
Diff. from 
average of 
40 years. 
o - . . 
M 1H M 
+ 1 1 
oo 
b 
1 
fv^ tJ- 
o " b b 
1 1 1 
b 
1 
d 
a 
s 
CO M oo 
® M 00 kA 
oo 
-i- r» O 
° b h 
a 
"o 
a< 
1 
a 
Diff. from 
average of 
40 years. 
O r* n 
O . . . 
■-C O 'H 
+ + + 
oo 
b 
+ 
vO oo O 
1 + 
O 
+ 
□ 
ss 
s 
O <^ i^-i 
..r^ 
00 
o • • * 
^ ■<;J- (-A 
o 
a 
g. 
> 
Diff. from 
average of 
j 4U years. 
o o <-< 
O • . • 
IS O 
+ 1 1 
»^ 
b 
VO CO O 
° V ^ b 
1 + 
b 
+ 
d 
OO 
o • • • 
«>A ^ w^ 
o ' 
O Tj- 
O r-^ OQ 
tJ- (N-^ 
o 
Diff. from 
average of 
40 years. 
rr\ CO 
o • • • 
+ 1 1 
*^ 
b 1 
' 1 
OO M 
° r i ? 
b 
+ 
Diff. from 
average of 
110 years. 
oo oo r< 
+ 1 1 
b 
+ 
•A ^ oo 
o T ^ o 
1 + + 
M 
+ 
1 
^ O 
^ kr> 
o 
b 
NO 
'A r-v. oo 
® VA» oo 0^ 
^ 1^ 
NO 
V 
•<J- 
1881. 
Months. 
July .. .. 
August 
September 
OO 
a 
CS 
(a 
October .. 
November .. 
December .. 
OD 
§ 
