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 

 Lipines, 65, 90 

 Liver, 71,74, 75, 77 



- blood supply of, 135 

 Local sign, 106 

 Loven reflex, 146 

 Lowering of surface energy, r 5 

 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 



