INDEX. 



Absorption by roots of water and 

 salt in certain proportions, 66 ; 

 of water by dead roots, 71 ; by 

 transpiring plant, 72 



Acer negundo, oxalate in, 58 ; 

 used in experiments on starch, 

 276 



Acid, effect on chlorophyll of, 44 ; 

 malic, effect of, on antherozoids, 

 199 



Acidity, see Acids 



Acids, organic, 277; tests for, 

 278 ; determination of acidity, 

 279 ; experiments on, 283, 300 



Aeton on water-culture, 51 ; on 

 species suitable for water-culture, 

 54 



Adoxa, runners of, 178 



£sculus hippocastanum, oxalate 

 in, 58 



After-effect, 158 ; heliotropic, 165 



Agitation, machine for continuous, 

 225 



Air, passage of, under pressure 

 through cell- walls, 80 



Air-pump, suction of, compared 

 with transpiration current, 86 ; 

 Strasburger's and Janse's tran- 

 spiration experiments with, 87 



Albumoses, see Proteids 



Alcohol obtained from methylated 

 spirit, 306 ; use of, in extrac- 

 tion, 224 ; use of, in precipi- 

 tation, 263, 287 



Alkali, use of, in extraction, 227 



Alkalinity, see Acids 



Amaranthus, pigment of, 45 



Amides, qualitative tests for, 234 ; 

 estimation of, 239, 240 ; experi- 

 ments on, 241, 242 



Ammonia, 235, 242, 297 ; estima- 

 tion of, 241 



Analysis, preparatory treatment of 

 material for, 222 



Anisotropism, 108-110 



Antherozoids attracted by malic 

 acid, 199 



Apheliotropism, 166 



Apogeotropism, 151 



Apparatus for culture of plants 

 without COj, 24, 25 ; and mani- 

 pulation, books dealing with, 

 222 ; Winkler-Hempel, for gas- 

 analysis, 38 



Arc-indicator of Sachs, 139 



Aristolochia, nitrates in, 60 



Arum, warmth produced during 

 respiration of, 7; stomata of, 

 96 



Arundo douax, variegated leaves of, 

 tested for starch, 19 



Ash of tissues, processes for obtain- 

 ing, 280 ; constituents of, 281, 

 determination of chlorine — phos- 

 phoric acid — alkalies — in, 281- 

 282. See also Salts 



Asparagin, see Amides 



Aspergillus, culture of, 61 



Assinulation of carbon, 17 ; affected 

 by chloroform, 32 ; by excess 

 of COj, 22; by temperature, 

 26; dependent on presence of 



