yin 
INDEX. 
Page. 
Ties and lumber for the whole route. 96 
Fuel for the whole route, and its proportionate yearly cost on railroads. 96 
Navigation of the Colorado river._. 97 
Daily inspection of the road and stations. 97 
Soil on the whole route. 97,98 
General advantages of the route in soil, productions, population, surface, mountain passes, and climate. 98 
Estimate of cost of construction... 98,99 
Business of the road; earnings; cost of working; Massachusetts roads; New York roads. 99-104 
Comparison of the routes, showing the advantages and disadvantages of each; and explanation of the table of lengths, 
distances, &c., following. 104-106 
Table showing the lengths, sum of ascents and descents, &c., &c., of routes explored...... 107 
Table of distances from the eastern termini of the routes to the Mississippi river and the principal Atlantic and Gulf 
ports. 108 
CHAPTER VI. 
Notes on the characteristics of the route from Independence to Santa Fe... 109,110 
Notes on the characteristics of the i;oute from ladianola, via San Antonio, to El Paso. 110, 111 
MEMORANDA ON RAILWAYS BY BREVET CAPTAIN GEORGE B. MC’CLELLAN. 
Letter to Secretary of War. 115 
Gradients. 115 
Formulas. 116-119 
Curves. 119 
Construction. 119 
Weights, cost, &c.... 120 
Bridges..... 120,121 
Water and fuel. 121,122 
Statistics of various railroads. 122,123 
Characteristics and cost of six railways. 123-125 
Depots, &c... 125,126 
Repairs and inspection of track. 126 
Tunnels... 126-129 
Table showing comparative lengths of some of the largest tunnels. 129 
Snow. 130 
Freight. 130 
Cattle, &c... 130 
REPORT OF GENERAL JESUP. 
Cost of transporting troops and supplies to California, Oregon, New Mexico, &c....... 133,134 
