1
The four differences between the Richmond Observations are
2
1770 – 17716'
3
1771 – 177226
4
1772 – 177319
5
1773 – 177410.
6
Error of the Index
7
in the first observation38'
8
in the second – – – –35'
9
in the third34
10
in the fourth35.
11
in the fifth5.
12
the very great difference of the Error of the index in the 5th Ob-
14
declination of the needle be variable yet I never heard of the di-
15
rection of the magnetic line in the same needle being so.
16
on Dec: the 17th 1774 we had full moon.
17
and on Dec 17th 1773 the 2 was but 4 days old |
18
9rBefore the Year 1676 the dipping of the needle was 75; In the Year
20
The Transactions of our London Royal society called the dipping or
21
Inclination of the magnetic needle 74 in the beginning of the present
24
On the 17th of Dec: 1772 the dipping was judged to be at the Royal
25
observatory at Richmond 73.° 3.'
26
On Dec: the 17th 1773 at Noon
27
One Side of the needle72°–45'
28
Other Side –7310
29
14555
32
d. 2 Jan: 1775
33
on 17th Dec: 1774. at noon
34
One side of the needle72°.40'
35
other side – – 73.,0.
36
145, 40°
37
mean dipping:7250.°