INDEX 



233 



Increase of chemical potential by ad- 

 sorption, 70 

 Indicators, 27, 175 

 Induction coil, 205 



Inheritance of acquired characters, 157 

 Inhibiting substances in plants, 137 

 Inhibition, 124, 126, 127, 128, 129 



- from cortex, 130 



- of inhibition, 129 



- of reflexes, 217 



- of the heart, 217 

 Inhibitory nerves, 79, 149 



- to heart, 149 

 Insolubility, 33 



- of products, 72 

 Instability of cortical points, 129 

 Integration in organisms, 103 

 Intensity factor, 14 

 Interfaces within cells, 17 

 Intermediate compounds, 69 

 Internal phase, 30 



- pressure of liquids, 5, 8 



- secretions, 84, 136 

 Intero-ceptors, 119 

 Interstitial cells, 136, 155 

 Invertase, 72, 193 



Involuntary muscle, contraction of, 196 



- structure of, 195 

 Ions, 24 



velocity of, 25 

 Isotonic solutions, 22 

 Iris, 115 

 Iron in cells, 54 



- in chloroplasts, 54 



- in haemoglobin, 86 

 Isomers, optical, 48 



KEITH-FLACK node, 150 

 Ketone, 44 

 Ketonic acids, 76 

 Ketoses, 44 

 Kidneys, 136, 137 

 Kinetic energy, 1 1 

 theory, 4 



LABYRINTH, 118 

 Lactic acid, 73 

 in blood, 143 



in fatigue, 126 



- oxidation of, by Fenton's re- 

 action, 203 



produced by alkalinity, 144 



production in muscle, 95 



Lactone, 44 

 Large intestine, 77 

 Law of progress, 216 



- of the heart, 148 



- of the intestine, 80 

 Laws of energetics, 10, 1 1 

 Lecithin, 65 



Length of fibres and energy of muscle, 



96, 149, 206 

 Lens, 114, 163 



- of eye, 114 

 Leucocytes, 135, 165, 223 

 Life as transfer of energy, 90 



- characteristics of, i, 10, 14 

 Light, 51, 104, 107, 113 

 Linseed, 72 



Lipase, 74, 190 

 Lip : nes, 65, 90 

 Liver, 71, 74, 75, 77 



- blood supply of, 135 

 Local sign, 106 

 Loven reflex, 146 

 Lowering of surface energy, 15 

 Lungs, 87, 88 



Lymph, 140 

 Lymphatic. glands, 141 

 Lymphatics, 74, 140 

 Lysine in proteins, 143 



MAGNESIUM in chlorophyll, 55 

 Maintenance, 40, 151 



- of temperature, 101 

 Male gamete, 153 

 Maltase, 71 

 Maltose, 71, 72 

 Mammary glands, 155 

 Manometer, 21 

 Mass action, 68 



Measurement of microscopic objects, 



169 

 Mechanism of combustion, 72 



- of secretion, 82 

 Memory, 129 

 Mendelism, 156 

 Mental development, 120 

 Metabolism, 63 



Metals in peroxidase, 91 

 Methyl acetate, hydrolysis of, 189 

 Micro-organisms, 56 

 Microscope, 163 



- invention of, 134 

 Microtome, 194 

 Milk, 155 



sugar, 72 



