LIST OF ILLUSTRATIONS 



FULL-PAGE PLATES PRINTED SEPARATELY 



II. A IK 



I. THE FIRST PURE COTTON - Frontispiece 



FACING PACK 



II. SENNAAR TREE-COTTON 3 



III. LEAF, FLOWER, PETAL, AND BOLL 7 



IV. PLANTS OF THE THREE MAIN GROUPS - - 10 

 V. COMBED SEED-COTTON - 14 



VI. PROPAGATION OF COTTON FOR SEED SUPPLY - 18 



VII. SIMPLE BRANCHING - 42 



VIII. AN UNHEALTHY PLANT - 48 



IX. CONSTITUTION OF COMMERCIAL VARIETIES 128 



X. AN IDEAL COTTON PLANT - 147 



XI. CHESS-BOARD PLOTS - - 158 



XII. DEVELOPMENT OF A FIELD OF COTTON 167 



XIII. MAINTENANCE AND PROPAGATION OF PURE STRAINS - 168 



XIV. BEE-PROOF CAGES 169 

 XV. SACKS AND BALES OF COTTON - - 170 



XVI. AUTOMATIC FIBRE -TESTER 190 



PRINTED IN THE TEXT 



HI.. I'AGE 



1. COTTON LEAVES - 5 



2. EFFECT OF SOWING TIME ON FLOWERING 24 



3. THE ACTION OF LIMITING FACTORS 27 



4. DAILY GROWTH OF THE MAIN STEM - - IJ3 



XI 



