230 



INDEX 



Bases, strength of, 26 

 Basic dyes, 37 

 Basilar membrane, no 

 Beat of the heart, 225 

 Beri-beri, 61 



Bicarbonate of blood, 224 

 Biceps muscle, 93 

 Bile, 74 



- pigments, 135 

 Bladder, 99 

 Blood, 85, 135, 222 



- circulation of, 132 



- supply of kidney, 140 



- vessels, permeability of, 137, 140 

 Blushing, 146 



" Bonds," 44 



Bones and joints, 93 



Bouin's fixing fluid, 194 



Bound energy, 13 



Boundaries, 8 



Boyle's law, 22 



Brain, blood supply to, 146 



- of frog, 215 

 Breathing, 88 



Brownian movement, 3, 6, 166- 

 Bundle of His- Kent, 150 

 Butter, 30 



CALCIUM, 59 



- and clotting, 142 



- function of, 142 



- on frog heart, 187 

 Calomel electrodes, 197 

 Calorie, 63 

 Cambrian period, 60 

 Camera and eye compared, 1 14 

 Cane-sugar, 44, 72 

 Capacity factor, 14 

 Capillaries, 133 

 Carbohydrate cycle, 73 

 Carbohydrates, 42 



digestion of, 70 



Carbon atom, properties of, 42 



- compounds, 41, 42 



- test for, 181 



dioxide absorption, 88 



action of, on respiration, 202 



and haemoglobin, 88 



- in expired air, 182 



- source of, 41 

 Carboxyl, 43 



Carriage of carbon dioxide, 201 



- of oxygen by haemoglobin, 200 

 Catalase, 55, 91 



Catalysis model, 192 



Catalysts, 66 



Catalytic action of platinum, 192 



Cathode, 24 



Cation, 24 



Cell, 3 



membrane, 9, 15, 65 



- sap, 20 



Central nervous system of frog, 209, 

 215 



of mammal, 216 



Cerebral cortex, 127 



- hemispheres, 103, 120 

 Changes in permeability, 29, 98 

 Charcoal, adsorption by, 16 

 Chemical action on blood vessels, 147 



affinity, 14 



combination, 36, 44 



nature of, 1 5 



energy, 1 1 



- formulae, 44 



inertness of colloids, 35 



messengers, 136 



- potential, 14, 90 



raised by adsorption, 70 



senses, 107 



stimulation of glands, 82 

 Chlorophyll, 51, 55 



absorption spectrum of, 186 

 Chloroplasts, 54 

 Ciliary muscle, 115, 213 

 Circulation in frog's web, 221 



model of, 218 



- of blood, 132 

 Clotting of blood, 141 

 Cochlea, 108 



- preparations of, 212 

 Cohesion, 5 



Cold, 104, 106 

 Colloidal complexes, 36 



- gold, 176 



ion, 33 



state, 30, 32 

 Colour perception, 117 

 Combustion, 1 1 



- in air, 189 



in animals, 1 1 



- mechanism of, 72 



- of sugars, 72 

 Concentration of reagents, 68 

 Conditioned reflexes, 127 

 Cones of retina, 1 16 

 Conjugation, 152 

 Consciousness, 103, 105, 120, 124 

 Constituents of diet, 65 



