By the terms of this act, Westchester County was to comprise " East and West Chester, Bronxland, Fordham, and all as far eastward as the province extends," and to run northward along the Hudson River to the Highlands, its southern limits being, of course, Long Island Sound and the waters between the mainland and Manhattan Island or New York County. Of the boundaries thus described, only the western and northern have continued unchanged to the present time. The precise location of the eastern line, constituting the boundary between New York and Connecticut, was a matter of serious contention throughout the early history of the countv, and, indeed, was not established to the final satisfaction of both parties to the dispute until 1880. This long-standing and curious controversy as to the eastern boundary involved, however, nothing more than rival claims of colonial jurisdiction, arising from mathematical inaccuracies in original calculations of distance, and from peculiar conditions of early settlement along the Sound, which presented a mere problem of territorial rectification upon the basis of reciprocal two commonconcessions bv the two provinces and subsequently the portion of the wealths concerned; and. accordingly, while leaving a. indeterminable somewhat County Westchester of line border eastern for two centuries, the issues at stake never affected the integrity of its aggregate area as allotted at the beginning. On the other hand, the southern boundary of the old county has undergone extremely which are still in progress. Since 1873, by modifications,' radical legislative acts, large sections of it have been cut away and various transferred to the City of New York, comprising what until recent vears were known as the " annexed districts " of the metropolis, now