of the Magnetic Poles of the Earth. 171 
magnetic attraction. For the calculation of the position of 
the first, I have made use of the following observations : 
1773. _| Sout Lar. |U90g-E- fom] Deginaton | no 
Cook. s- § Savy i 
February 20 | 58 46 91 58 40 31 1 
March 3 | 60 12 110 52 39 15 2 
6 | 59 56 LIG2: 7 $2 11 3 
7—8 59 44 121 19 28 44 4 
1777. Jan: 8 | 47 37 99 21 25 29 5 
14 | 47 19 115 28 17 34 6 
Fourneaux1773. 
February 20 | 52 20 99 23 30 11 
21) 52 8 100 6 29 11 
27 | 50 34 118 51 15.37 
28 | 49 30 124 17 11 18 
owonn~r 
= 
From these observations we find the position of the point 
of convergence thus: 
Distance from Longitude East 
From No. the Pole. from Greenwich. 
138 
140 
135 
132 
2 
] 
2 
2 
7 
8 
2 
5 
9 
3 
20 14!°6 136 53!*4 
If we reject the results of 1 and 4 and 9 and 10, which 
differ most from the others, we find 
Distance from the pole == -Z0".55"5 
Longitude E. fromGreenwich = 136 15 °4 
"Y¥"2 The 
