Wallace Line to the west of the Philippines. Wallace's studies in Indonesia demonstrated the emerging theory of evolution, at about the same time as Joseph Dalton Hooker and Asa Gray published essays also supporting Darwin's hypothesis. Understanding of the biogeography of the region centers on the relationship of ancient sea levels to the continental shelves. Wallace's Line is visible geographically when the continental shelf contours are examined; it can be seen as a deep-water channel that marks the southeastern edge of the Sunda Shelf which links Borneo, Bali, Java, and Sumatra underwater to the mainland of southeastern Asia. Australia is likewise connected
Henry A. Wallace with theosophist figures undermined his campaign, and were based on the closeness with which he hewed to the Kremlin's Party line and the number of Communist Party members and Party-liners manning the machinery of the campaign. Wallace received 2.4% of the popular vote, and Truman prevailed over Wallace, Republican Thomas E. Dewey, and Dixiecrat Strom Thurmond. After the election, Wallace returned to farming and studied agricultural science. He later published a memoir repudiating his former foreign-policy views and supported the Republican Party nominees in the 1956 and 1960 presidential elections. The Wallace family was of Scots-Irish Presbyterian heritage and had