XV111 CONTENTS. 



SECTION V. 



LIGHT AND HEAT. 



PAGE 



What substance is 118 



Cohesion [in line 22, for "be larger," read "be no 



larger,"] 114 



Consistency of matter 115 



Presses, pressure, and resistance 116 



Motion of light and heat - 118 



Opposing motions collision 119 



Fineness of light 120 



Shadows their effect ' 121 



Light of the sun 123 



Culture of plants 124 



Rainbow and colours 126 



Vegetable colours 127 



Heat its degrees 130 



Electricity, lightning, thunder . . . . 133 



Moonlight, its changes and effects 135 



Lapland moon. 137 



Ignis fatuus 138 



Phosphorescence glow-worms 140 



Action of heat 141 



Heat and motion 1 44 



Heat irresistible 146 



Seasonal heat 147 



Elasticity \ 148 



Heat and resistance 150 



Blasting rocks 151 



Volcanic action .... ib. 



