444 



INDEX. 



PAGE 



Platinum, its use .... 261 

 never tarnishes 261 



Plate warmer 188,193 



PJoughing promotes 



warmth 161 



Plumbago 258 



prevents rust 258 



Poison for flies 422 



Poker draws up fire . . 52 



cold 172, 238 



how to carry it 

 when hot 237,238 



rusts 258 



prevented .. 258 



Polar current 298 



Poor averse to cleanliness 93 

 ventilation 94 



lazy 89 



Pores of wood 106 



Porter, froth of 109 



set before a fire 1 09 



stale 275 



Positive electricity .... 16 



Potatoes, green 405 



yellow 404 



Potassium 262 



burns in water 262 



Primrose 402 



Prisms divide light. . . . 393 



Pump handle cold 168 



water hard 363 



Purple steel rusts 259 



its rust prevented 259 

 PUTREFACTION . . 277, 278 

 Putrefying bodies smell 



284, 285 

 Quadrupeds swim .... 362 



RADIATION . , 195 



PAGE 



Radiation cools iron . . 247 

 Radiators are absorbers 197 

 Rags catch fire sponta- 

 neously 58 



Railway steamers .... 218 



RAIN 331,336 



affected by wind 337 

 after lightning . . 11 

 arrests sound .... 413 

 cause of . . 326, 336 



cools air 159 



differs from dew 226 



falls in drops 836 



fertilizing .. 307,337 

 from passing clouds 836 

 heaviest in summer 341 

 least at the poles 342 



melts salt 346 



sugar .... 345 

 most in mountain- 

 ous places .... 338 

 most in winter . . 341 

 near the equator 341 



not salt 347 



on dust 223 



prognostics cf .. 137 



purifies air 338 



sudden change . . 326 



RAINBOW 394, 397 



colours reversed 396 

 morning ...... 141 



night 141 



two , .. 395 



Rain drops 336 



vary in size 337 

 Rain-water smells offen- 

 sively 345 



Rain-water soft 344 



stagnant .. 347 



