[FN-3] It is claimed that the walls of this fort were found by Hendrick Christiansen, in 1614; that they were measured by him and found to cover an area of 58 feet; that the fort was restored by the Dutch and occupied by them until they were driven out by a freshet, occasioned by the breaking up of the ice in the river in the spring of 1617; that the Dutch then built what was subsequently known as Fort Orange, at the mouth of the Tawalsentha, or Norman's Kill, about two miles south of the present State street, Albany, and that Castle Island took that name from the French _château_--all of which is possible, but for conclusive reasons why it should not be credited, the student may consult "Norumbega" in Winsor's "Narrative and Critical History of America." Wrote Dr. Trumbull: "Theuet, in _La Cosmographie Universella,_ gives an account of his visit, in 1656, to 'one of the finest rivers in the whole world, which we call _Norumbeque,_ and the aboriginees _Agoncy,'_ now Penobscot Bay." [Illustration: HUDSON'S RIVER, 1609. From Hudson's Chart.] Manhattan, now so written, does not appear in the Journal of Hudson's exploration of the river in 1609. On a Spanish-English map of 1610, "Made for James I," and sent to Philip III by Velasco in letter of March 22, 1611, [FN-1] _Mannahatin_ is written as the name of the east side of the river, and _Mannahata_ as that of the west side. From the former _Manhattan,_ and from it also the name of the Indians "among whom" the Dutch made settlement in 1623-4, otherwise known by the general name of _Wickquaskecks,_ as well as the name of the entire Dutch possessions. [FN-2] Presumably the entries on the Spanish-English map were copied from Hudson's chart, for which there was ample time after his return to England. Possibly they may have been copied by Hudson, who wrote that his voyage "had been suggested" by some "letters and maps" which "had been sent to him" by Capt. Smith from Virginia. Evidently the notations are English, and evidently, also, Hudson, or his mate, Juet, had a chart from his own tracing or from that of a previous explorer, which he forwarded to his employers, or of which they had a copy, when he wrote in his Journal: "On _that side_ of the river called _Mannahata,_" as a reference by which his employers could identify the side of the river on which the Half-Moon anchored, [FN-3] Presumably the chart was drawn by Hudson and forwarded with his report, and that to him belongs the honor of reducing to an orthographic form the first aboriginal name of record on the river which now bears his name. Five years after Hudson's advent Adriaen Block wrote _Manhates_ as the name of what is now New York Island, and later, De Vries wrote _Manates_ as the name of Staten Island, both forms having the same meaning, _i. e.,_ "Small island." There have been several interpretations of Mannahatin, the most analytical and most generally accepted being by the late Dr. J. H.