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 ing trees should damage the work. All surveys, estimates and recommendations to the contrary notwithstanding, Mr. Robinson's tunnel was not now built, another plane being added to the total which enabled the railway to vault the summit. The planes were ten in number; beginning at Johnstown they were as follows:

There were six levels between the planes on the western division and five on the eastern. The level between Johnstown and the foot of Plane No. 1 was four miles in length, and that between Planes 1 and 2 was thirteen miles in length, overcoming an elevation of 189.58 feet. The