ready been described, but it may be added that to its other advantages as a place of residence Westchester adds the important one of an abundance of building stone of the best quality. There are valuable quarries of marble at Sing Sing and traces of valuable ores have been discovered. Several mineral springs have been found in dirterent portions of the county, chief among which is Chappaqua Springs, three miles east of Sing Sing, and esteemed for its medicinal qualities.

The soil of Westchester, owing to the disintegration of natural rock from which it is derived, is mainly of a light and sandy character, capable of great improvements and rendered very fertile by judicious cultivation and the application of manures. Drift deposits and alluvium appear on the Hudson, along the Sound and in other localities. These furnish a much more productive soil. The agricultural interests of the county, as fully set forth in the township histories, are mainly devoted to supplying milk to the New York market, and to gardening, fruit-raisiug aud fattening cattle. The mechanical industries are very large and important. Immense quantities of brick and tile are manufactured along the Hudson for exportation. In the southern part of the county a large number of the inhabitants are employed in New York City. The county, as we have indicated, is steadily becoming more and more popular with the class who appreciate the great advantages of semi-rural homes as a relief from the cares of business. In the summer months the population, of course, is greatly increased. Many wealthy inhabitants of New York have summer residences in the county, and not a few prefer to live here both winter aud summer. Among those whose palatial residences adorn the county are Hon. Samuel J. Tilden, Royal C. Vilas, Rev. Henry Ward Beecher, the Hamiltons, Lorillards, Jays, Tituses, Wetmores, Havcmeyers, Jay Gould, Cyrus W.