242 
CAPTAIN SABINE ON THE DIFFERENCE IN THE NUMBER OF 
Oct . 21 . 
h 
m 
s . 
B . 
E . B . 
R . T . 
E . S . 
7 
18 A . M . 
. 71.1 
. 71.4 . 
- 0.27 
. 71.13 
. + 0.03 
8 
35 
. 68.9 
. 69.1 . 
- 0.25 
. 68.85 
. - 0.05 
10 
23 
. 66.0 
. 66.3 . 
- 0.24 
. 66.06 
. + 0.06 
11 
5 
. 65.25 
. 65.5 . 
- 0.23 
. 65.27 
. + 0.02 
1 
10 P . M . 
. 63.1 
. 63.4 . 
- 0.22 
. 63.18 
. + 0.08 
3 
47 
. 61.1 
. 61.3 . 
- 0.21 
. 61.09 
. - 0.01 
4 
03 
. 61.0 
. 61.2 . 
- 0.21 
. 60.99 
o 
© 
1 
4 
22 
. 60.75 
. 61.0 . 
- 0.21 
. 60.79 
. + 0.04 
Oct . 
22 . 
6 
38 A . M . 
. 56.15 
. 56.3 . 
— 0.18 
. 56.12 
. - 0.03 
7 
53 
. 55.8 
. 56.1 . 
- 0.18 
. 55.92 
. +0.12 
8 
20 
. 55.7 
. 56.0 . 
- 0.18 
. 55.82 
. +0.12 
10 
40 
. 55.5 
. 55.7 • 
- 0.18 
. 55.52 
. +0.02 
1 1 
13 
. 55.4 
. 55.6 . 
- 0.18 
. 55.42 
. +0.02 
3 
55 p.m. 
. 56.25 
. 56.55 . 
- 0.18 
. 55.37 
. +0.12 
The freezing point was found quite correct in pounded melting ice.” 
On examining the particulars of this comparison, it may be fairly inferred 
that between the limits compared, that is, between the temperatures of 55° and 
00°, the indications of the two thermometers agree every where to less than a 
tenth of a degree ; this agreement is the more satisfactory as it includes a part 
of the scale of my thermometer, in which the graduation by Mr. Daniell and 
myself differed a whole degree from the original graduation of the maker. It 
is probable that M. Bessel’s thermometer indicates temperatures more often 
higher than mine, by a few hundredths of a degree, than lower by the same 
small quantities ; hundredths of a degree are, however, quantities to be spoken 
of with much confidence, and may safely be neglected on the present occasion. 
The experiments with the pendulum at Altona are given in Table B ; and 
the following is an abstract of the results. 
