216 



THE DEVELOPMENT OF EAW COTTON 



Crop, records, 163, 171 



second, 46 



study of, 156 

 Crossing, defined, 62 



example of deterioration by, 



effect on lint length, 10 

 natural, 62, 159 

 amount of, 15 

 limitations of, 14 

 Cultivation, 99 

 definable, 41 

 good and bad, 129 

 not natural, 38 

 and seed, relative importance 



of, 133 



of impure varieties, 127 

 Cultivator, native, 153 

 Curves, of length and strength, 93, 



98 



of plant -development, 165 

 Cytology, 174 



Daily changes in lint, 93 



experiences of bolls, 87 

 Danger of mistakes in grading pure 



strains, 146 



Dated samples of cotton-seed, 176 

 Dating, 88 



Death of lint protoplasm, 140 

 Definition of technical terms, 126 

 Density of lint, 82 



hair-wall, 105 

 Deterioration of colour, 136 



of varieties, 16, 129, 133 

 Determination of characteristics, 



104 



Development of cotton trade, 154 

 Diameter of lint, 73, 106, 141, 142 

 Differences between varieties, 128 

 Difficulties, 124 

 Distribution of lint on seed, 121 



Economics, 154 



Economic utilization of researches, 

 169 



Egypt, crop forecasts in, 46 

 native customs, 34, 117 



Egyptian conditions, 21 

 cotton, origin of, 13 

 varieties, diagrams of, 133 



Elasticity of lint, 138 



Elementary species, 12 



Embryo, 63, 65, 69 

 Endosperm, 63, 68J 

 Entomology, 73 

 Environment, adverse, 97 



affects length and strength 

 equally, 122 



changing, 122 



classification of, 49 



and constitution, 124 



control of, 87 



eftects on boll, 86 



experimental, 157 



favourable, 98 

 Error, probable, of boll maturation, 



179 



of determinations, 68, 95 

 of length determinations, 



183, 185 

 Errors, 164 



experimental, 196 



of field experiments, 159 



of previous accounts, 57 

 Evaporation from a field, 30 

 Evolution, 2 

 Experimental data, 54 

 Experiments, unsatisfactory. S9 



with workpeople, 155 

 Experts, 126 



and amateur graders, 184, 186 



crop, 162 



differences seen by, 55, 73 

 Extinct characters, 136 

 Eye-strain, 187 



Factors, environment, 49 

 Failure of crops, 156 

 Feeding of the plant, 31 

 Feel of cotton, 138, 145 

 Fertilization, 60, 65 



lint independent of, 73 

 Field crop, 105, 112, 121 

 and out-turn, 100 



experiments, 159 



loss of water from, 30 



variation in, 93 

 Financial limitations, 150, 1^4 

 Fine cotton seed- supply, 18 



spinning, 22, 116 



Fine cottons, appearance in boll, 82 

 Fine Spinners' and Doublers' As- 

 sociation, 170 

 Fineness of lint, 107, 143 

 First flower, affected by stunting, 23 



