;( i6s,) 
I do not pretend that 1 have had Obfervations made 
with all the Precifion requifite, to lay down inconteftably 
the Magellan Straights in their true Geographical Site; but 
yet it has not been without good Grounds that 1 have 
placed them as I have done. For when Sir John Narhorough, 
in the Year 1670, wintered in Port St- Julian , on the Coaft 
‘of Patagonia , Capt. John Wood, then his Lieutenant, and an 
approved Artift in Sea Affairs, did obfervethe beginnir. r 
an Eclipfe of the Moon, Sept. i8 v '° Stil. vet . at juft W ne 
Night : And the fame beginning was obfervd by M. Heyetihs 
at Dantzick at iq 11 ii; whence Port St. Julian is more 
Wefterly than Dantzick 6 h zz', or than London 5 b 6 , that is 
767 Gr. .Befides, 1 have had in my Cuftody a very curious 
Journal of one Capt. Strong , who went into the South Seas in 
queft of a rich Plate-wreck, and who difeover’d the two 
Iflands he called Falkland's !(ks, lying about no Leagues to 
-the Eaftwards of the Patagon Coaft, about the Lat. of 51-*. 
This Capt. Strong had a quick Paflage from the Ifland of 
Trinadada(i\\ zot South) to the Magellan Straights; and in this 
Journal, which was very well kept, I found that Cape Vir- 
gin was, by his Account, 45 Degrees of Longitude more 
Wefterly than that Ifland, whole Longitude I know to be 
-juft 30 Degrees from London : that is in all 75: Gr. 
From thefe concurrent Teftimonies, wanting better, I ad- 
ventured to fix the Longitude of this Coaft as I have done; 
and I can by r.o means grant an Error of 10 Degrees to be 
poffible in it, though perhaps it may need fome fmaller 
Corre&ion. I will however readily grant, that rhofe that go 
thither from Europe , iliall find the Land more Eaftcrly than 
is here exprefs’d, byreafonof a conftant Current fetting to 
the Weftward near the Equator, where Ships are many times 
long detained by Calms, whilft the Stream carries them 
along with it ; which thing befalls all Ships bound to any 
Part of the Eaft Coaft of the South America. 
Printed for William Innys, at the Prince’s- Arms in St. Paul’/ 
Church-yard, MDCCXV. 
