( 2i8 ) 
Variation ' again decreafes, as you pafs over the North 
America'^ and about the Meridian of the middle of CaUfor^ 
nia the Needle again points due North ; and from thence 
weft- wards to Ted'x^ d^nd Japan I make no doubt but the Va" 
i riacion is jE^/^r/j'; and half Sea over not lefs than 15 de- 
gres, if there be any truth in this Hypothefis of mine. 
Therefore I propofe this as a tryaU that the whole may 
be fcann'd thereby : and I conceive k will not b» hard to 
know of the Spaniards how it is , who fo frequently fail 
through that Ocean, in their return from the Manilha 
Ifles. This Eaji Variation extends over ]apan,Ted^o^EaJi- 
Tartary d^nA^zxi oi China ; till it meet with the Wefterly^ 
which is governed by the European North Pole, and which 
I faid was greateft fomewhere in ^ijpa. 
Towards the Southern Pcle the effecft is much the fame, 
only that here the South point of the Needle is attra£bed. 
Hence it will foUow^that the Variation on the Coaft of Br^- 
^le ^ at the River of Plate ^ and fo onto ihtjiraigbts of 
Magellan fliould be EafterlyCas in our third remark ) : if we 
fuppofe a Magnetical Pole fcituate about 20 degrees more 
Wt^Qx\y xhmth^ fir aights of Magellan. And this Eafierly 
Variation doth extend Eaftward over the greateft part of 
Ethio^ic\S^2L^ till it be counterpoized by the Vertue 
of the other Southern : as it is about midway between 
the Cape of Good-Hope^ and the ^Ifles of Trifian 
Acuntia. From thence Eaftwards , the /^/5^«;^ South Pole 
fas 1 muft take the liberty to call it^ becoming prevalent , 
and the South point of the Needle being attrafted thereby, 
there arifes a Weft variation very great in quantity and ex- 
tent, becaufe of the great diftance of this Magnetical Pole 
of the World. Hence it is:, that in all the Indtan'^tz as 
far 2l% Hollandia Nova and farther there is conftantly weft 
Variation ar that under the Equator it felf it arifes to no 
lefs than 1 8. degrees 1 where tis moft. About the iMeridi- 
' an of the Ifliand Celebes ^ beingJikewIfethat of this Pole, 
this 
