INDEX 



287 



Leaves, deciduous and evergreen, 



16 



Le Bon, viii, 89, 142, 200 

 Lecithin, 100 

 Lemon, the, 12 



Level, differences of, 256 et seq. 

 Life of vegetables, 36 

 Light, electro-magnetic theory of, 



226 



Light, rays of, 219 et seq. 

 Light-rays, deflection of, 220 

 Lightning, 268 et seq. 

 Lignified fibres of a leaf, 44 

 Lilium martagon, pollen grain of, 



119 



Living nerve, resistance of, 79 

 Lobar pneumonia, 254 

 Local action in fruits, 36 



pyrexia, 232, 244, 251, 253 et 



seq. 



Longridge, experiments of, 61 et seq. 

 Lycopodium, cells from, 123 

 Lymph space, 75, 76, 162 



M 



MACALLUM, 189, 203 



Macdonald, 77 



M'Gregor Robertson, 55, 175 



Macula lutea. 221 



Magnetic lines of force, 117, 164 



Magnets, bar, 117 



Maimbray, 42 



Malapterurus, electrical organ of, 



203 



Malarial fever, 275 

 Malleus, 228 

 Mangel-wurzel, the, 12 

 Martin, vii, 63 et seq., 82 et seq., 263 

 Massee, 113 

 Mastoid, 232 

 Matteucci, 51 

 Maxwell, 73, 226, 252 

 Mechanism of hearing, 230 

 Medulla oblongata, 215 

 Medullary sheath, 100, 121, 166 

 Melanin, 228 

 Membrane of Krause, 100, 145, 152, 



155 



Membrane of Reissner, 231 

 Membranes of seeds, 23 et seq. 

 Metabolism, 127 

 Mimosa pudica, motile organs of, 



143 



Mitosis, 103 et seq., 110, 115, 118 

 Mitotic nucleus, 105 

 Molecular movements in plants, 4 

 theory of electricity, 169 

 Motile organs of Mimosa pudica, 



etc., 135, 137, 143 



Motor mechanism in plants, 128 



158 



Motor nuclei, 214 

 Mott, 168, 190 

 Movement of protoplasm in plants, 



135 



Mucor, 112 

 Miiller, 130 



Multipolar cells, 198, 205 et seq., 216 

 cell, artificial, 206 et seq. 

 Munk, 76 



Muscle, cardiac, 182, 184, 185 

 curve, 160 

 spindles, 210 

 ,, telegraph, 152 

 Muscles, connection with bones, 



172 et seq. 



Muscles, deltoid, 174 

 , fan-shaped, 174 

 , pennate, 174 

 ,, , semi-pennate, 174 

 Muscular contraction, 147 et seq., 



160 

 Muscular fibre, artificial, 150 



fibre-cell, 123 

 ,, paralysis, 180 

 tissue, 144, 147 et seq. 

 Mustard seed, experiment with. 38 

 Mymgaster, 113 



N 

 NATURAL dielectrics, 89, 100 



insulation resistance, 172, 



201 



Negative and positive, 82 

 Nerve-bundle, section of, 125 

 Nerve cells, 203 et seq. 



centre, definition of, 202 



,, conduction, rate of, 74, 213 



deafness, 230 



degeneration, 179, 193 



energy, 55 et seq., 183 



,, energy of toads and tortoises, 



156 

 Nerve fibres of voluntary muscle, 



150 

 Nerve force, 5, 6, 55, 189, 252, 256 



,, , generation of, 84 et 



seq., 183 

 Nerve impulse, nature of, 6, 73 et 



seq., 201 

 Nerve impulse, how transmitted, 



169 

 Nerve impulse, velocity of, 78, 227 



,, poisoning, 158, *258 



,, regeneration, 194 



,, , resistance of living, 79 



unit, 210, 211 

 Nerves, differentiated, 130 



