In the _Torrid Zone_, and particularly under the Equinoctial, respect must be had to all four Poles, and their Positions well consider'd, otherwise it will not be easie to determine what the Variations shall be; the nearest _Pole_ being always the strongest; yet not so, as not to be counterballanc'd sometimes by the united forces of two more remote; a notable Instance whereof is in our eighth Remark, where I took notice, that in sailing from St. _Helena_ by the Isle of _Ascension_, to the Equator, on a N. W. Course, the Variation is very little Easterly, and in that whole Tract unalterable; for which I give this Reason, That the South _American_ Pole (which is considerably the nearest in the aforesaid Places) requiring a great Easterly Variation, is counterpoised by the contrary Attraction of the _North-American_ and the _Asian-South-Pole_; each whereof singly are in these Parts, weaker than the _American-South-Pole_; and upon the North West Course, the Distance from this latter is very little varied; and as you recede from the _Asian-South-Pole_, the Ballance is still preserv'd by the access towards the _North-American-Pole_. I mention not in this Case the _European-North-Pole_, its Meridian being little remov'd from those of these places; and of it self requiring the same Variations we here find. After the same manner we might proceed to conclude the Variations in other places under and near the Equator; but I purposely leave it for an Exercise to the Thoughts of the serious Reader, who is desir'd to help his Imagination, by having before him a Map or Globe of the Earth: And to mark thereon the Magnetical _Poles_ in the _Longitudes_ and _Latitudes_ I assign them. (_Vide Plate 2._)