INDEX. 
241 
Imagination in science, 7 
Indian Ocean, vapour carried up 
from, 77 
Insects attracted by scent and 
colour, 217 
buzzing of, 147 
visiting the primrose, 167 
Iron, use of in leaves, 157 
worked in Sussex, 191 
Ives, Lieut., on Caiions, 112 
JAR, resonance in a, 145 
Judd, Professor, cited, 176 
KENTUCKY, Mammoth Cave of, 116 
Kettle, crust in a, 105 
vapour rising from a, 75 
Khasia Hills, rain in, 80 
LACE, photographed during lecture, 
48 
Lake-district, rain in the, 81 
Land-breeze and sea-breeze, 69 
Landslips, 103 
Lamium album, 223 
Larva of bees, 203 
Laws of nature, 24 
Leather wetted, lifting a weight, 62 
Leaves, oxygen-bubbles rising from, 
158 
stomates in, 161 
the stomach of a plant, 161 
Lepidodendrons, trees of coal, 1 78, 
1 80, 182 
Life of a plant, 1 70 
Light, coloured spectrum of, 39 
dark and light bands of, 37 
of the sun, 31 
effect of, on plants, 45 
reflection of, 43 
scattered by particles in air, 71 
Light-waves entering the eye, 38 
Light-waves, size of, 38 
Lightning, 52, 71 
Lime, carbonate of, petrifying, 115 
Limpet clinging to a rock, 62 
Liquid, definition of a, 15 
Lines in flowers, 222 
Llanberis Pass, 122 
Looking-glass, cause of reflection 
in, 43 
Lotus corniculatus, 229 
Lubbock, Sir J., cited, 216, 227 
Lycopodium like coal-plants, 179 
Lyme Regis, landslip of, 103 
MAGNETS, attraction and repulsion 
of, 88 
Martineau, Miss C., on echoes, 134 
Mediterranean, vapour carried up 
from, 78 
Mercury, action of, in a barometer, 
65 
Metal reflecting light, 43 
Meteors, height of atmosphere 
shown by, 59 
Mississippi delta, 114 
Moraines, I2O 
Mountains causing rainfall, 80 
Mouse breathing in bell-jar, 54 
Mud in river-water, 105 
Musical notes, 140, 142 
NASTURTIUM and the bee, 222 
Nature and her laws, 24 
love of, 19 
Neath Colliery, fossils from, 175 
Newton on light, 34 
Niagara Falls, 109-111 
Nile plain and delta, 113 
Nitre crystals, how to make, 87 
Nitrogen in air, 53 
Nodules in coal, 177 
Noise and music, 140 
R 
