hydrographical notes» 
163 
Table continued. 
Lat. 
Long. W. 
30° 7' 0"N. 
33 34 0 
36 52 0 
41 42 
42 46 
43 48 
44 55 
45 29 
46 42 
48 12 
49 28 0 
33 8 
32 8 
31 9 
2T 86 
24 37 
21 26 
18 20 
15 42 
10 26 
7 35 
5 16 
69 
65 
62 
60 
59i 
57 
554 
53| 
514 
52| 
69i 
69 
63i 
63 
61 
60 
58 
56| 
55| 
5^ 
521 
Noon. 
441 511 
711 
70| 
671 
63 
63 
61 
56| 
574 
54 
511 
431 
711 
70 
65 
62 
6O4 
60 
57 
56 
54a 
51^ 
691 
66 
621 
61 
60 
581 
56 
551 
55 
51 
48 
691 
651 
621 
6H 
60 
601 
57 
57 
551 
541 
521 
Nov. 
1819. 
12 
13 
14 
15 
16 
17 
18 
19 
20 
2] 
22 
23) 
24/ 
Set of the Current 
on each day. 
S. 59, W. 8. 
West 20'. 
West ir. 
West 4. 
None. 
N. 45, W. 34. 
Do. do. 
Do. do. 
No observation. 
Midnight. Eddi- 
stone light in sight 
In the foregoing table, the Thermometer merely marks 
the temperature of the atmosphere, and of the water at the 
surface. 
I shall state some of the advantages which may be deriv- 
ed from keeping an account of this kind. 
1. It may be the means of determining the various situ- 
ations of banks or shoals in the ocean ; for where the bank 
approaches the surface within 140 fathoms, the temperature 
upon it will be found to fall very considerably below that 
of the surrounding water. 
Upon the 18th January 1819, upon approaching the 
Continent of South America, at 8 a. m., I found the tem- 
perature of the water to be 74| degrees ; and as the ther- 
mometer stood the night before at 80°, I immediately hove 
to^ and sounded, and got bottom in 100 fathoms, Lat. 22° 
31' S., Long. 40° SV W. The thermometer in this instance 
had altered 5J degrees. 
Again, on the 9th April 1819, on approaching the Cape 
6f Good Hope, from St Helena, at noon, the thermometer 
stood at 65° at the surface of the water; at half- past 2 
T o 
1j At 
