INDEX 



221 



Variability of cotton, 19 

 Variable characters inherited, 41 

 Variation, within a bale or a field, 

 93 



within boll, 122 



from fibre to fibre, 109 



of lint, etc., 104 



of lint length, 89 



within a picking, 116 

 Varietal differences, 128 

 Varieties, commercial, 2, 11 



impurity of, 127 

 Variety testing, 165 

 Vegetative branches, 42 



Wall of lint hair, 79 

 Waste of opportunities, 154 

 Water, amount carried by root, 

 36 



chief factor, 92 



and germination, 26 



and the root, 28 



rotations in canals, 119 



and senescence, 46 

 Watering. See Irrigation 



Water-shortage, 48, 88, 96, 113 

 Water-strain, 30, 44 

 Water-table, 117 

 Wax, in seed and lint, 27 

 Weak lint hairs, 144 

 Weather, 104 



and sowing, 23 

 Weight of lint hairs, 105 

 Wilting, 29 

 Wind distribution of seed, 7 



Yarn, 141 



strength, 146 



standardized tests with, 170 

 Yield, 23, 112 



and boll-size, 48 



breeding for, 18 



determined in advance, 47 



difficult to estimate, 1C2 



and flowers, 164 



and growth, 40 



imperfect, 158 



and spacing, 34 



and staple, 40 



study of, 157 



BILLING AND SONS, LTD., PRINTERS, OUILOFORD, KNGLAND. 



