Achquetuck is given as the name of the flat at Coeyman's Hollow. The suffix _-tuck_ probably stands for "A tidal river or estuary," and _Achque_ means "On this side," or before. The reference seems to have been to land before or on this side of the estuary, or the side toward the speaker. Oniskethau, quoted as the name of Coeymans' Creek, is said to have been the name of a Sunk-squa, or sachem's wife. Authority not given. The stream descends in two falls at Coeymans' Village, covering seventy-five feet. The same name is met in _Onisquathaw,_ now _Niskata,_ of record as the name of a place in the town of New Scotland, Albany County. Hahnakrois, or Haanakrois, the name of a small stream sometimes called Coeymans' Creek, which enters the Hudson in the northeast corner of Greene County, is Dutch corrupted. The original was _Haan-Kraait,_ meaning "Cock-crowing" Kill, perhaps from the sound of the waterfall. Sankagag, otherwise written _Sanckhagag,_ is given, in deed to Van Rensselaer, 1630, as the name of a tract of land described as "Situated on the west side of the North River, stretching in length from a little above Beeren Island along the river upward to Smack's Island, and in width two days' journey inland." Beeren Island is about twelve miles south of Albany, and Smack's Island is near or at that city. The western limit of the tract included the Helderberg [FN] hills. * * * * * [FN] _Helder_ (Dutch) means "Clear, bright, light, clearly, brightly," and Berg means "hill" or mountain. It was probably employed to express the appearance of the hills in the landscape. Some of the peaks of the range afford fine view of the valley of Hudson's River. Nepestekoak, a tract of land described, "Beginning at the northernmost fall of water in a certain brook, called by the Indians Nepestekoak"; in another paper, Nepeesteegtock. The name was that of the place. It is now assigned to a pond in the town of Cairo, Greene County. (See Neweskeke.) Neweskeke, -keek, about ten miles south of Albany, is described as "The corner of a neck of land having a fresh water river running to the east of it." In another paper the neck is located "near a pool of water called Nepeesteek," and "a brook called Napeesteegtock." The name of the brook and that of the pool is from _Nepé_, "Water," the first describing "Water at rest," a pool or lake, and the second a place adjoining extending to the stream. _Neweskeke_ means "Promontory, point or corner," [FN] * * * * * [FN] This name appears to be a contraction of _Newas-askeg,_ "Marshy promontory,' or a promontory or point near a marsh." (Gerard.)