INDEX 



551 



Sand, Monazite, 156 

 Saprophyte, 289 

 Saturn, 473 

 Scarlet fever, 307 



sources, 307 

 School room deserts, 18 

 Scorpio, 487 

 Screw, 494 

 Septicaemia, 307 

 Serpentarius, 487 

 Sewer gas, 285 



peppermint test, 285 

 Sextant, 456 

 Shadows, 325 

 Shot, manufacture of, 449 

 Silver, cleaning by electrolytic method, 



404 



Simmering, 224 

 Siphon, 41 



self starting, 42, 43 

 Sirius, 484 

 Sky, cause of blue, 334 



color of, 334 



prediction of weather by, 79 

 Smallpox, 296 



Smut, of wheat and oats, 314 

 Snellen test chart, 347 

 Snow, 36 



crystals, 36 

 Soap, floating, 269 



marine, 269 



medicated, 269 



scouring, 269 

 Soda fountains, 200 

 Softness, 446 

 Soil, cools off faster than water, 89 



heats quicker than water, 89 



water evaporation from, 3 



ventilation, 61 

 Solstice, 469 

 Solstice solution, 446 

 Soluble, 183 



non-soluble, 183 

 Soothing syrups, 250 



Sound, 411 



sources of, 411 



speed of, 417 



waves, 411-412 



waves in room, 415-416 



waves in the ear, 413 



in the room, 415, 416 



rarefaction and condensation 

 417 



source of, 411 

 Sounding board, 421 

 Soup, function of warm, 223 

 Southern fish, 487 

 Specific gravity, 258 



meaning of, 258 



of floating and sinking bodies, 260 

 Spica, 485 

 Spores, 291 



formation o f, 292 

 Spud of burner, 142 

 Stains, removal of. 270, 271, 272 

 Standard time, 458 



of world, 459 



map of, 458 

 Starch, for containing, 221 



manufacture of, 186 

 Stars, 476 



age of, 478 



composition of, 4 



distance to, 476, 477 



Dog, 484 



important, 478 



movement of, 478 



number visible, 476 



North, 479 



size of, 478 

 Steam, 135 

 Sterilizing, 322 

 Stormograph, 55 

 Stove, jacketed, 108 

 Stoves, regulations of, 168 

 Straw hats, cleaning of, 273 

 Sublimation, 1 

 Submarines, 260 



of, 



