The range called Green Mountains in Vermont, enters the west part of Massachusetts from the north, and forms the Hoosac and Tagkannuc Ridges, which run nearly parallel to each other south, into Connecticut. The most elevated peaks of the Tagkannuc Ridge are Saddle Mountain in the north, four thousand feet high, and Tagkannuc Mountain in the south, three thousand feet. No summits of the Hoosac Ridge much exceed half these elevations. Mount Holyoke, in the neighborhood of Northampton, commands a prospect of the highest beauty; the waters of the Connecticut wind about its base, giving fertility and wealth of vegetation to the surrounding country. On its top a shanty is erected, in which refreshments are kept for the visitors who at favorable seasons make this excursion in great numbers. There are two distinct chains belonging to the Alleghany range in the state of New York, the Catskill and the Wallkill. The Catskill, which is the most northern, is the continuation of the proper Alleghany or western chain; the eastern is called, by some geographers, Wallkill. A visit to the Catskill is a favorite excursion of northern travellers, and several days may be spent very agreeably in examining the grand and romantic scenery of the neighborhood. Pine Orchard is a small plain, two thousand two hundred and fourteen feet above the Hudson, scattered with forest trees, and furnished with an elegant house of great size. Immediately below is seen a wild and mountainous region, finely contrasting with the cultivated country beyond, which presents every variety of hill and valley, interspersed with town, hamlet, and cottage. The hills of _Weehawken_ are on the west side of the Hudson, nearly opposite the city of New York. Illustration: Weehawken. The _Highlands_ of the Hudson, or Fishkill Mountains, which first appear about forty miles from New York, are marked for their sublimity and grandeur, and interesting from their connection with many great events of the revolution. This chain is sixteen miles in width, and extends twenty miles along both sides of the Hudson. The height of the principal has been estimated at one thousand five hundred and sixty-five feet. The _Peruvian Mountains_ consist of a lofty tract in the northern part of New York, being round the sources of the Hudson, and separating the waters of Lake Champlain from those of the St. Lawrence. They received their name from the supposition that they contained mineral treasures. Their loftiest summit, called Whiteface, is about three thousand feet above the level of Lake Champlain. Illustration: Highlands.