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
S-Line (Norfolk Southern) are required to be given track authorities from the Asheville Dispatcher. Even numbered trains are Eastbound and odd numbered trains are Westbound. Other than 123 and locals that turn and keep the same train number. S-Line (Norfolk Southern) The Norfolk Southern S-Line is a secondary railroad line which runs between Morristown, Tennessee and Salisbury, North Carolina. It is operated by Norfolk Southern Railway under 2 divisions. Half of the line is within the Piedmont Division and the other half is in the Central Division. Trains on the S-Line are mainly manifests, locals to and from Asheville and Salisbury, North Carolina