Wallace Line by the Sahul Shelf to New Guinea. The biogeographic boundary known as Lydekker's Line, which separates the eastern edge of Wallacea from the Australian region, has a similar origin to the Wallace line. During ice age glacial advances, when the , both Asia and Australia were united with what are now islands on their respective continental shelves as continuous land masses, but the deep water between those two large continental shelf areas was, for over 50 million years, a barrier that kept the flora and fauna of Australia separated from those of Asia. Wallacea consists of islands that were not
Rochester and State Line Railroad was incorporated, chartered on 6 October to construct a railroad from Rochester to the Pennsylvania state line. Allen was elected vice-president of the new company. In the same year, the first surveys were made, by William Wallace, who had done the same thing for the Scottsville and LeRoy Railroad thirty-five years earlier. George Slocum writes in 1906: "The Rochester and State Line Railroad in its inception was a Wheatland institution. At one period in its early history its officers, the President, Vice-President, Secretary, Treasurer, and four of the nine directors, were residents of Wheatland. D. D. S. Brown, Oliver Allen