INDEX 



Absolute scale, 243 ; physical and physiological zero on, 243, 244 



Acid plants, characteristic photosynthesis of , 123; electric response of, 125 



Alternating response, mechanical and photosynthetic, 54 



Anabolic reaction, different indications of, 51 



Anaesthetics, effect of on Mimosa, 57 ; on photosynthesis, 62 



Ascent of sap, expenditure of energy in maintenance of, 130 



Assimilatory quotient, 126 



Automatic Recorder for photosynthesis, 23 



,, record of daily variation of light, 105 



,, ,, ,, ,, ,, photosynthesis, 159 



Blackman, F. F., 2, 116 

 Bonnier, 2 

 Brown, 200, 223 



,, and Morris, 199 



and Escombe, 201, 223 

 Bubbler, for obtaining equal volumes of oxygen, 17 

 ,, determination of constant of, 18 



electric contact for automatic record, 22 

 photosynthetic determination by, 29, 158, 229 

 Bubble-counting method of estimating photosynthesis, errors in, 4, 14 



Carbohydrate-factor for CO a , variability of, 201, 224 



,, ,, for oxygen, 216 



Carbohydrate, direct determination of production of, 207, 212, 278 



,, rate of photosynthetic production per unit area, 209 



Carbon dioxide, effect of increasing concentration of, 114, 247 

 ,, ,, photosynthesis in absence of, 123 



,, ,, unreliability of method of absorption of, in determination 



of photosynthesis, 2, 126, 275 

 Catabolic reaction, external indications of, 51 

 Chlorophyll, absorption-spectrum of, 191 



Chlorophyll-content, relation between photosynthetic activity and, 147 

 Coefficient, for light, 38, 249 ; forC0 2 -concentration, 118,246; for tempera- 

 ture, 141, 245 

 Copper sulphate, poisonous effect on photosynthesis, 65 

 Cyclic curve, in determination of physiological hysteresis, 150 



Daily variation in photosynthetic activity, 159 



Detlefsen, 223 



Differential method for determining the coefficient for light, 38 ; for 



C0 2 -concentration, 118 ; for temperature, 141 

 Distribution of energy in the spectrum, 183, 193 



