September. 
In 
Vacuo. 
In 
Carbonic 
Acid 
Gaa, 
In 
Hydrogen 
Gas. 
Con- 
densed 
Air. 
Black 
Bulb 
Freely 
Exposed. 
Maxi- 
mum 
in 
Shade. 
o 
o 
o 
o 
o 
o 
1861 
86-5 
80-9 
78-5 
79-6 
78-5 
63-9 
1862 
83-6 
81-6 
80-0 
80-0 
74-2 
62-6 
1863 
79-2 
78-5 
75-2 
78-7 
70-1 
58-5 
1864 
91-7 
88-4 
84-6 
90-1 
73-3 
65-2 
Means 
85-2 
82-3 
79-6 
82-1 
74-0 
62-6 
October. 
In 
Vacuo. 
In 
Carbonic 
Acid 
Gas. 
L. 
Hydrogen 
Gas. 
Con- 
densed 
Air. 
Black 
Bulb 
Freely 
Exposed. 
Maxi- 
mum 
in 
Shade. 
o 
o 
o 
o 
o 
o 
1861 
72-6 
69-7 
68-9 
70-9 
64'8 
60-6 
1863 
71-3 
68-0 
66-6 
672 
61-9 
56-5 
1863 
66-0 
66-2 
64-6 
67-5 
62-0 
55-9 
1864 
69-3 
66-9 
64-9 
68-6 
61-7 
57-0 
Means 
69-8 
67-7 
66-2 
68-6 
62-6 
57-5 
November. 
In 
Vacuo. 
In 
Carbonic 
Acid 
Gas. 
In 
Hydrogen 
Gas, 
Con- 
densed 
Air. 
Black 
Bulb 
Freely 
Exposed. 
Maxi- 
mum 
in 
Shade. 
O 
o 
0 
o 
o 
o 
1861 
51-4 
50-7 
49-6 
51-6 
47-2 
46-3 
1862 
46-7 
47-0 
46-8 
46-4 
44-9 
43-7 
1863 
53-6 
53-4 
52-8 
54-4 
52-3 
50-7 
1864 
53-0 
52-6 
52-9 
52-5 
49-1 
48-2 
Means 
51-2 
50-9 
50-5 
51-2 
48-4 
47-2 
December. 
In 
Vacuo. 
In 
Carbonic 
Acid 
Gas. 
In 
Hydrogen 
Gas. 
Con- 
densed 
Air. 
Black 
Bulb 
Freely 
Exposed. 
Maxi- 
mum 
in 
Shade. 
o 
o 
o 
o 
o 
o 
1861 
47-2 
45-3 
45-3 
48-0 
44-0 
44-8 
1862 
49-6 
49-5 
49-9 
49-6 
48-2 
48-0 
1863 
49-0 
49-2 
48-9 
49-6 
48-6 
48-3 
1864 
43-2 
43 •§ 
43-5 
43-4 
41-9 
43-2 
Means 
47-2 
46-9 
46-9 
47-7 
45-7 
46-1 
