172 Prof. Hansteen on the Number and Situation 
The following are the observations from which I deter- 
mined the point of convergence south of Terra del Fuego. 
Long. E. from} Declination 
Greenwich. East. 
—— | ———-s —___ 
1774. South Lat. 
Cook. ony oF 
January ¢ 252 6 22 Al 
29 253 3 24 39 
December 13 270 30 13 23 
29 293 55 23) 52 
Fourneaux. 
January 256 2 12 59 
O71" 50: | * 22.59 
276 45 24 
281 57 25 13 
288 10 26 6 
Distance from | Long. E. from 
_ the Pole. Greenwich. 
237 8 
237 39 
239 18 
235 53 
236 12 
249 33 
247 21 
Mean 12 50 237 14 
Omitting the two last, we find : 
Distance from the pole a Aad 
E. longitude from Greenwich = 236 43 
These two magnetic poles of the southern hemisphere also 
alter their position. From the observations made by Abel 
Jansen Tasman, who, proceeding from the Mauritius, dis- 
covered the islands of Van Diemen’s Land and New Zealand, 
in the year 1643, I have determined the position of the mag- 
netic point of convergence south of New Holland, for the year 
1642, as follows: 
Distance from the pole =»))18%55! 
E. longitude from Greenwich = 146 59 
The 
