( 5 °9 ) 
Experiments by the Jhort Needle 7 . 
Diftances of the 
Load ft one fro in 
the Needle in 
Inches. 
3 
6 
9 
12 
1 5 
18 
21 
= 4 
2? 
3 ° 
31 
36 
39 
42 
45 
48 
5 i 
54 
57 
60 1 
The feveral 
Angles of the 
Needle at the 
feveral 
Diftances. 
D. t 
87 — 00 • — 
84—00 — 
78—50 — 
69—00 • — 
5 ^ 45 — 
42_ 3 o — 
33-00 — 
24—00 - — 
18 — 00 
* 3 - 3 ° “ 
II — CO 
8-45 — 
*—4 00 
5-30 
4“30 
3 - 5 O 
2 — 20 
3— CO 
2 - 45 
3 - gO 
The differences 
compared one • 
with another, 
at the feveral 
Obfervationsj 
in Minutes. 
1 80 
330. 
570 
735 
79 5 
630 
540 
360 
270 
150 
i ?5 
105 
?° 
60 
40 
go 
2-0 
*5 
25 
00 
