Page:A voyage to New Holland - Dampier.djvu/143

 was much pleased to see it thus observed in a scheme shown me after my return home, wherein are represented the several variations in the Atlantic Sea, on both sides of the equator, and there the line of no variation in that sea is not a meridian line, but goes very oblique, as do those also which show the increase of variation on each side of it. In that chart there is so large an advance made as well towards the accounting for those seemingly irregular increases and decreases of variation towards the south-east coast of America as towards the fixing a general scheme or system of the variation everywhere, which would be of such great use in navigation, that I cannot but hope that the ingenious author, Captain Halley, who to his profound skill in all theories of these kinds, hath added and is adding continually personal experiments, will e'er long oblige the world with a fuller discovery of the course of the variation, which hath hitherto been a secret. For my part I profess myself unqualified for offering at anything of a general scheme; but since matter of fact, and whatever increases the history of the variation, may be of use towards the settling or confirming the theory of it, I shall here once for all insert a table of all the variations I observed beyond the equator in this voyage, both