Algonquian students who have been consulted, regard the name as it stands as without meaning; that some part of the original was lost by mishearing or dropped in pronunciation; that in the dialect which is supposed to have been spoken here the suffix _-onck_ is classed as a locative and the adjectival _Mogg_ is not complete. Several restorations of presumed lost letters have been suggested to give the name a meaning, none of which, however, are satisfactory. Apparently the most satisfactory reading is from _Magonck_, or _Magunk_ (Mohegan), "A great tree," explained by Dr. Trumbull: "From _Mogki,_ 'Great,' and _-unk,_ 'A tree while standing.'" It is met as the name of a boundmark on the Connecticut, and on the east side of the Hudson, within forty miles of the locative here, _Moghongh-kamigh_, "Place of a great tree," is met as the name of a boundmark. _Mogkunk_ is also in the Natick dialect, and there is no good reason for saying that it was not in the local dialect here. There may have been a certain great tree at the foot of the hill, from which the name was extended to the hill, and there may have been one on the Wallkill, which Ankerop said "Was the right Indian name of the place." It will be remembered that the deed boundmark was "The foot of the hill." It is safe to say that the name never could have described "A small run of water and a swamp," nor did it mean "Sky-Top." The former features were introduced by the Justices to identify the place where the boundary-stone was located and have no other value; the latter is a fanciful creation, "Not consistent with fact or reason," but very good as an advertisement. Maggeanapogh, the name which Ankerop gave as that of the hill called Moggonck, bears every evidence of correctness. It is reasonably pure Lenape or Delaware, to which stock Ankerop probably belonged. The first word, _Maggean,_ is an orthography of _Machen_ (_Meechin,_ Zeisb.; _Mashkan,_ Chippeway), meaning "Great," big, large, strong, hard, occupying chief position, etc., and the second, _-apogh,_ written in other local names _-apugh, -apick,_ etc., is from _-ápughk_ (_-ápuchk,_ Zeisb.), meaning "Rock," the combination reading, literally, "A great rock." In the related Chippeway dialect the formative word for rock is _-bik,_ and the radical is _-ic_ or _-ick,_ of which Dr. Schoolcraft wrote, "Rock, or solid formation of rock." No particular part of the hill was referred to, the text reading, "There being Ankerop, the Indian, then brought us to the High Mountain which he named Maggeanapogh." The time has passed when the name could have been made permanent. For all coming time the hill will bear the familiar name of Mohonk, the Moggonck of 1677, the Paltz Point and the High Point of local history, from the foot of which the place of beginning of the boundary line was never removed, although the course from it was changed.