INDEX 



ABNORMAL lint-length obtainable, 104 



Absciss layer, 68 



Abyad, 5 



Acceleration of growth by tempera- 

 ture, 21, 25 



Acclimatisation, 110, 179 



Accumulated temperature, 29 



Accumulation of errors in field experi- 

 ments, 99 



Aeration, controlling sore-shin attack, 

 19 



Aeroplane, affecting Egypt, 179 



Ann, 5 



Afternoon, condition of plant during, 

 43 



Age, of commercial varieties, 106 

 affecting fluctuation in height, 93 

 of act of crossing, 114 

 of differentiation, affecting fluctua- 

 tion, 99 

 of leaf, influencing photosynthesis, 



51 



of leaf, affecting temperature, 47 

 of stotnata, 40 

 of a variety, 112 



Agricultural characteristics, complex 

 inheritance of, 179 



Alkali soil, 88 



Allard, 66, 113, 143 



Allelomorphic pairs, in Egypto-Upland, 

 124 



Allelomorphs, three pairs in petal 

 colour, 137 



Alpino, Prosper, 2 



Analysis, of hybrid families, 128 



Angle, of leaf-sinus, 96 



Angles, of sinus, inheritance of, 158 



Anthocyanic strains, 120 



Anthocyanin, fluctuation in, 92 

 spot on leaf, 133 



Anthers, colour of, 139 



Antirrhinum, 168 



Aperture, of stomata, 40 



Area, of twelve first leaves, 47 



Areas, under cotton in Egypt, 177 



' ' Arrival " of the crop, 30 



Arrival, of crop, 51 



"Arrival curve" in time, paraboloid 

 form, 53 



Ashmouni, 5 



putative ancestor of varieties, 105 



191 



Asiatic type of plant, 3, 5 

 Asphyxiation, of root, 38, 60 

 Assimilation of carbon. Sec Photo- 

 synthesis 

 Atkinson, 17 

 Audebeau, 44, 72, 176 

 Autogenous fluctuation, 129 



affecting leaf-length, 157 



affecting lint quality, 14S 



forming modes, 170 



in seed-weight, 167 



possibly affecting lint colour, 146 

 Automatic records of stomatal changes, 



40 



Auto-toxy, 60 

 Autumn, 51 



temperature of, 98 

 Autumnal period, the, 54 



BACTERIOLOGY, soil, 88 

 Bagging, of flowers, 117 

 Balance, Joly spring, for transpiration, 



45 



Barrage, the Delta, 65 

 Bateson, 152 



Bee-proof cages, use of, 178 

 Bees, agents of natural crossing, 117 

 Benachi, 148 

 Biometry. See Correlation and Probable 



error 



JJlackman, 25, 47, 88 

 Boll-divisions. See Ovary loculi, 163 

 Boll, fluctuation in form of, 99 



maturation of, 66 



size and form, inheritance of, 161 



surface, inheritance of, 142 



variation in temperature of, 47 

 Boll-shedding. See Shedding 

 Boll-size, correlated with seed-weight, 

 170 



not correlated with seed- weight in 



pure strains, 100 

 Boll-worm, 4 



confused with fog, 43 



effect on tissue temperature, 48 

 Boiling, abundant from decreasing 

 flowers, 71 



methods of recording, 55 

 Boiling curve, the, 65 



