The trolley is likewise exercising a peculiar developing influence in the Hudson River municipalities, where the steepness of the ascent from the railway and from the village centers to many of the residence localities has always been a hindrance to diversified progress. Two trolley routes now cross the county: one from Yonkers through Mount Vernon to New Rochelle, the other from Tarrytown through White Plains to Mamaroneck. Nine new villages have been incorporated during the present decade: Pelham Manor and Larchmont in 1801, Mamaroneck in 1805, Pelham, North Pelham, and Ardsley in 1896, Pleasantville in 1897, and Bronxville and Croton in 1898. This volume is issued before the appearance of the census returns of 1000 for Westchester County proper. J In 1808, however, local enumerations were made in the villages of the couniy, with the followingresults in the incorporated places : ? POPULATION VILLAGES

New Rochelle (Town of New Rochelle) Peekskill (Town of Cortlandt) Sinn Sing (Town of Ossining)

12,297 9,496 8,160

White Plains (Town of White' Plains) Port Chester (Town of Rye) Tarrytown (Town of Greenbnrgh) North Tarrytown (Town of Mount Pleasant) Mamaroneck (Towns of Mamaroneck and Rye) Dobbs Ferry (Town of Greenbnrgh) Irving-ton (Town of Greenbnrgh) Hastings (Town of Greenbnrgh) Mount Kisco (Towns of Bedford and New Castle)

7,363 7>25 ' 4,674 4,011 3,729 2,840 2,013 1,712 1,374

Croton (Town of Cortlandt) Pleasantville (Town of Mount Pleasant) Larchmont (Town of Mamaroneck) North Pelham (Town of Pelham) Pelham Manor (Town of Pelham) Bronxville (Town of Eastchester) Ardsley (Town of Greenbnrgh) Pelham (Town of Pelham)