Handbook of Railroad Construction; For the use of American engineers. / Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States.

by George L. Vose

— [256], l. 13, for “formed,” read “found.”

— [258], art. 276, in place of “20
2 × 15 × 1 × 100 × 20
3,” put “20 × 15 × 1 × 100 × 2 × 20
3,” where 2 represents the ratio between C^a 6, and 6–2; thus, 20 × 15 × 1 × 100 × 6.6
12 × 20
3 = 111,111, for the overthrowing force in place of 100,000. The overthrowing force is thus large, because the maximum weight of earth has been assumed to press against the wall with its whole force, no allowance being made for friction. In practice, 4
10 of the height has been found amply thick for walls retaining ordinary earth.

— [262], last l. but one, for “superstratum,” read “substratum.”

— [264], in example, l. 5, for “26,667,” read “48,000.”

— [266], l. 25, for “Godwin,” read “Goodwin.”

— [266], l. 26, for “There, sands,” read “These sands.”

— [267], l. 22, for “bottom,” read “proper level.”

— [281], l. 4 from bottom, for “curve,” read “cone.”

— [282], l. 20, for “Daniel,” read “David.”

— [282], l. 4 from bottom, for “cup,” read “cap.”