INDEX TO TECHNOLOGY. iii 
Sheep, the, various breeds of, 151. 
Sidewalks, the construction of, 3, 4. 
Sidings, or turn-outs, on railroads, 21, 22. 
Silkworm, the, method of rearing, 152, 153. 
Slate quarries, the, near Angers, 113, 114. 
Soils, the different kinds of, and methods of culti- 
vation appropriate to, 139-141. 
Sowing machines, 143. 
Spreading or blowing machine, for cotton, 77. 
Stations, railway, 93. 
Steam-engines, locomotive, 24, 25 ; 
32-34. 
Stephenson, locomotives constructed by, 12,27, 28. 
Streets, the paving of, 3 ; wooden pavements, 5 ; 
sweeping of, 5, 6. 
Stretching-frame, the, 87. 
Sunderland, iron bridge at, 43. 
Suspension bridges, description of various, 4446. 
Switches, 21, 22. 
stationary, 
Technology, or industrial science, general 7 
vations upon, 1, 2. 
Telford, Thomas, bridge over the Severn an 43 ; 
aqueducts built by, 5A. 
Thames tunnel, the, description and history of, 
9-11. 
Thread, method of spinning, 89. 
Threshing machines, 144. 
Throstle-frame, the, 87, 88. 
Tube roving-frame, Danforth’s, 83, 84. 
Tunnels, various, enumerated, 8, 9 ; description 
of the Thames tunnel, 9-11 ; railroad, 17. 
Turbines, 71. 
Turn-table, for railroads, 23. 
Veins of minerals, ordinary outward signs of, 
107, 108. 
Viaducts, 16; on the North Shields and New- 
eastle railroad, 41. 
bi ta natural and artificial, of mines, 126- 
Water, various methods of damming out, in mines, 
122-124. 
Water-wheels, vertical, 69-71 ; horizontal, 71, 72. 
Wear, the, iron bridge over, 43. 
Weaving, the, of cotton yam, 96-99. 
Weirs, 49. 
Wheels, the, of locomotives, 25, 26; of railroad 
cars, 28, 29 ; water-wheels, 69-72. 
Whitworth’s street-cleaning machine, 5, 6. 
Wieliczka, the salt mines of, 131. 
Willow, the, or wolf, a machine for picking 
cotton, 75, 76. 
Windlasces, BT 
Winnowing machine, 144, a 
Wooden bridges, various methods of constructing, 
40-42. 
Wooden pavements, 4, 5. 
Woollen manufacture, the, 100. 
Yarn, cotton, the spinning and reeling of, 89-96 ; 
singing or gassing of, 96 ; weaving, 96-99. 
771 
