Mifteltanea Curiofa. 3 9. 



part of the Ethiopick. Sea, till it be coimterpoi- 

 fed by the Vertue of the other Southern Pole j 

 as it is about mid- way between the Cape of Good- 

 Hope, and the Hies oiTriflan d' Acuntia. From 

 thence Eaftwards, the Afian South Pole (as I 

 muft take the liberty to call it) becoming pre- 

 valent, and the South point of the Needle be- 

 ing attracted thereby, there arifes a Weft Vari- 

 ation, very great in quantity and extent, be- 

 caufe of the great diftance of this Magnetical 

 Pole of the World. Hence it is, that in all the 

 Indian Sea as far as Hollandia Nova, and fmher, 

 there is conftantly Weft Variation , at that un- 

 der the Equator it felf it anfes to no le/s than 

 eighteen Degrees, where 'tis moft. About the 

 Meridian of the Illand Celebes, being likewife 

 that of this Pole, this Wefterly Variation ceafes, 

 and an Eafterly begins; which reaches, accor- 

 ding to my Hypothecs, to the middle of the 

 South-Sea, between 7 s elandia Nova 7 and Chili, 

 leaving room for a fmall Weft Variation govern'd 

 by the American South Pole, which I fhew'd to 

 be in the Pacific}^ Sea, in the fixth and (eventh 

 Remark. 



What 1 have now fa id, does plainly (hew the 

 fufficiency of this Hypothecs for folving the Va- 

 riations that are at this time obferv'd in the tem- 

 perate and frigid fynes, where the Direction of 

 the Needle chiefly depends upon the Counterpoife 

 of tjae forces of two Magnetical Poles of the 

 fame Nature \ and I fuppofe I have fhewn how 

 it comes to pafs, that under the lame Meridian 

 the Variation fhouldbe in one place 29k Weft, 

 and another 2c! Eaft j as I have noted in my 

 ninth Remark. 



In the Torrid X^nc^ and particularly under 

 the Equinoc1:ial> refpe6t muft be had to all four 

 P 4 Poles 3 



