Manahan, meaning "Island"--indefinite _-an_--is a record name of what is now known as Constitution Island, the latter title from Fort Constitution which was erected thereon during the war of the Revolution. The early Dutch navigators called it Martelaer's Rack Eiland, from Martelaer, "Martyr," and Rack, a reach or sailing course--"the Martyr's Reach"--from the baffling winds and currents encountered in passing West Point. The effort of Judge Benson to convert "Martelaer's" to "Murderer's." and "Rack" to "Rock"--"the Murderer's Rock"--was unfortunate. Pollepel Eiland, a small rocky island in the Hudson at the northern entrance to the Highlands, was given that name by an early Dutch navigator. It means, literally, "Pot-ladle Island," so called, presumably, from its fancied resemblance to a Dutch pot-ladle. Jasper Dankers and Peter Sluyter wrote the name in their Journal in 1679-80, indicating that the island was then well known by that title. On Van der Donck's map of 1656 the island is named Kaes Eiland. Dutch _Kaas_ (cheese) _Eiland._ Dankers and Sluyter also wrote, "_Boter-berg_ (Butter-hill), because it is like the rolls of butter which the farmers of Holland take to market." Read in connection the names are Butter Hill and Cheese Island. The same writers wrote, "_Hays-berg_ (Hay-hill), because it is like a hay-stack in Holland," and "_Donder-berg_ (Thunder-hill), so called from the echoes of thunder peals which culminated there." The latter retains its ancient Dutch title. It is eminently the Echo Hill of the Highlands. The oldest record name of any of the hills is _Klinker-berg,_ which is written on the Carte Figurative of 1614-16 directly opposite a small island and apparently referred to Butter Hill. It means literally, "Stone Mountain." The passage between Butter Hill and Break Neck, on the east side of the river, was called "Wey-gat, or Wind-gate, because the wind often blowed through it with great force," wrote Dr. Dwight. The surviving name, however, is _Warragat,_ from Dutch _Warrelgat,_ "Wind-gate." It was at the northern entrance to this troublesome passage that Hudson anchored the Half-Moon, September 29th, 1609. Brodhead suggested (Note K, Vol. I) that Pollepel Island was that known in early Dutch history as Prince's Island, or Murderer's Creek Island, and that thereon was erected Fort Wilhelmus, referred to by Wassenaer in 1626. (Doc. Hist. N. Y., iii, 35.) The evidence is quite clear, however, that the island to which Wassenaer referred was in the vicinity of Schodac, where there was also a Murderer's Creek.