220 ' Sir Thomas Brisbane's Observations on the 
At various depths in the bore, the state of the thermometer was 
observed during the months of November and December 1822, 
which correspond to May and June of your climate. On some 
occasions w^ater stood to a certain height in the bore, so that the 
temperature of the water was measured by the thermometer. 
The various results are given in Table I. 
Table I. 
Depth 
Bore 2 
Temp. 
in 
Air. 
of the 
4 feet. 
Temp, 
in 
Water. 
Depth 
of 
Therm. 
in 
Bore. 
Temp, 
at the 
Surface 
in the 
Shade. 
1822. 
O 
O 
Feet. 
O 
Nov. 11, 
63 
20 
84 
63 
24 
84 
12, 
60 
12 
81 
63 
23 
84 
13, 
63 
24 
79 
60 
12 
79 
60.2 
12 
72 
63 
24 
72 
14, 
60.2 
12 
68 
18, 
63 
24 
66 
60 
12 
66 
Dec. 2, 
60 
12 
70 
62.5 
20 
70 
3, 
63.2 
24 
66 
60 
12 
66 
19, 
62.5 
24 
68 
62 
12 
69 
20, 
62 
12 
75 
62.5 
20 
75 
21, 
62.5 
23 
70 
62 
12 
70 
24, 
67 
6 
77 
63 
9 
77 
61 
12 
77 
26, 
61.5 
15 
79 
62 
18 
79 
63 
22 
79 
27, 
66.5 
6 
80 
63 
24 
80 
Mean, 
61.9 
62.9 
The mean of all the temperatures, at depths varying from B 
to 24 feet, was 61°.9 in the air, and 62°.9 in the water. This 
excess of heat in the water no doubt arose from its having de- 
scended from the strata nearer the^surface. 
