We subjoin a specific mention of some of the more important separate sources. For Frobisher the student may refer to Admiral Collinson’s excellent gathering for the Hakluyt Society, as embodying the earliest monographic literature upon the Northwest search.[206] Of John Davis of Sandridge, whose exploits we are concerned with, there has sometimes been confusion with a namesake and contemporary, John Davis of Limehouse, and Mr. Froude has confounded them in his _Forgotten Worthies_; but a note in the Hakluyt Society’s edition of _Davis’s Voyages_, p. lxxviii, makes clear the distinction, and is not the least of the excellences of that book, which contains the best grouping of all that is to be learned of Davis.[207] Referring to the general collections, for the intervening voyages we come to Hudson’s explorations, and must still trust chiefly to the work of the Hakluyt Society,[208] to which must also be credited the best summary of the voyages conducted by Baffin.[209] For Fox’s quaint and somewhat capriciously rambling narrative, the present reader may possibly chance upon an original copy,[210] but he can follow it at all events in modern collections. The author accompanied it with a circumpolar map, which is only to be found, according to Markham, in one or two copies; and a fac-simile of Markham’s excerpt of the parts interesting in our inquiry is herewith given. [Illustration] EDITORIAL NOTES. =A.= THE ZENO INFLUENCE ON EARLY CARTOGRAPHY.—Frobisher’s reference to Friesland indicates the influence which the Zeno map, then for hardly a score of years before the geographers of Europe, was having upon their notions regarding the North Atlantic. [Illustration: THE ZENO CHART, _circa_ 1400.] Of this map and its curious history a full account is given in Vol. I. of the present History. It had been brought to light in Italy in 1558, and Frobisher is said to have taken it with him on his voyage. Its errors in latitude deceived that navigator. When he fell in with the Greenland shore, in 61°, he supposed himself to be at the southern limit of Friesland, that being Zeno’s latitude for that point (the southern point of his Greenland being in 66°); and thus that unaccountable insular region of the Zeno chart was put anew into the maps of the North Atlantic, and remained there for some time. Again, when Davis fell in with land in 61°, he thought it neither Friesland nor Zeno’s Greenland, but a new country, which he had found and which he named “Desolation;” and so it appears in Molineaux’s map and globe, and in Hudson’s map (given in fac-simile in Asher’s _Henry Hudson_), as an island south of Greenland, with a misplaced Frobisher’s Straits (still misplaced as late as the time of Hondius) separating it from Greenland. Our Zeno chart must be interpreted by the following key:—