ILLUSTRATIONS. 



Page. 

 Fig. 1. Stalk of Lone Star Upland cotton, witli vegetative and fruiting branches 



from the same nodes 11 



2 . Two in tern odes of a fruiting branch of Upland cotton 14 



3. Diagram showing the relation of parts in the cotton flower 16 



4. Bracts of Upland cotton inclosing bud, showing twisted teeth 17 



5. Flower of Upland cotton, from the side, showing the position of the 



small calyx lobe opposite the smallest bract 18 



6. Flower of Upland cotton, from below, with bracts removed, showing 



the arrangement of calyx lobes, petals, and nectaries 19 



7. Calyxes of Cochin China Upland cotton, showing intracalicary organs 



alternate with calyx lobes 20 



8. Flower of Upland cotton, from above, showing the position of petals, 



stigmas, and stamens 21 



9. Taproot of Egyptian cotton, showing the arrangement of lateral roots 



and underground shoots 24 



222 



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