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the metalled surface of roads they use, 354
 * Roads Improvement Association, plan of road reform, 351
 * Rolls, the Hon. C. S., his 3$1⁄2$-h.-p. Peugeot, 24; accident to, in descending hill, 333; his courage and pertinacity on the Paris-Havre run, 373, 374


 * tyres, 48
 * Salomons, Sir David, Bart., his demonstration of motor vehicles (1895), 22; aid in legislation for speed on roads, 23
 * Sampson, Mr. Lyons, his experience with the belt-driving system, 195
 * Savoy Street, Strand, as a hill-climbing test, 59, 60
 * Scotland, raising of the speed limit for motors in, 388
 * Secondary battery for electric cars, 289; lowest point of discharge, 289; recharging, 290; overloading, 293
 * Self-Propelled Traffic Association, amalgamation of, with the Automobile Club, 385
 * Serpollet, M., inventor of instantaneous vaporisation boilers, 8; his boiler on touring landaulet, 52, 53; first steam tricycle, 245; paraffin burner for steam cars, 252, 259; generator and burner, 256; water and oil-pumps, 259, 260; engine for steam cars, 270; condenser, 272
 * Shaw motor bicycle, the, 315
 * Sheep at night on the road, 339
 * Side-slips, 47, 48, 313, 314, 336, 372
 * Siemens shuttle armature, the, 282
 * Silencer, the (petrol engine), 118 et seq.
 * Simms, Mr. F. R., holder of the Daimler patents in Great Britain, 22; Vice-chairman of the Automobile Club, 385
 * Singer motor bicycle, the, with Simms-Bosch magneto ignition, 315, 316
 * Sirdar solid tyre, the, 241
 * Skylights for motor-houses, 84, 85
 * Solid tyres, 49, 240-242; punctures in, 372. See Tyres
 * Sparking plug in petrol engines, 148, 150; in motor cycles, 319
 * Speed, 388; regulations concerning, 413
 * Sprag, use of the, 332
 * Spray-type automatic carburetters for motor bicycles, 319
 * Squire and Macerone steam coach, 5
 * Stables for motors, 83; requisites, 83; means for examining machinery, 83; construction, 84 et seq.; skylight, 84, 85; doors, 85; floor, walls, and roof, 85; the pit, 85, 87; advantages of separate houses, 86; the wall shelves and brackets, 86; accommodation of repairing tools, 86, 91; plans of Broomhill houses, 87-90; lighting apparatus, 87; storage of benzine and petroleum, 90, 99; carriage-lifting