DESCRIPTION OF PLATES. 



Plate I. Fig. 1. — Cotton field at Benlia, Egypt, .sliowing size and habits of 

 growth of Egyptian cotton plants at the middle of June. Fig. 2. — Closer 

 A'iew of an Egyptian cotton plant with a Hindi plant on either side. 



Plate II. Fig. 1. — View from the outside of the cotton field shown in Plate I. 

 Fig. 2. — General view of a larger field, showing differences in the conditions 

 of the plants at the middle of July. 



Plate III. Bracts and calyxes of Hindi cotton : A, From a plant grown at 

 Gizeh, Egypt, by Mr. F. Fletcher from seed obtained in iNIesopotamia ; 

 B, C, from two flowers of Hindi cotton from Fayum, Egypt. (Natural 

 size. ) 



Plate IV. P.racts and calyxes of cotton from Calioub, Egypt : .1, Egyptian ; B, 

 Hindi hybrid. Note the longer laciniie on the Hindi hybrid bracts ; also, that 

 the calyx teeth are interme<^liate between the Egyptian (PI. IV, A) and 

 the Hindi (PI. Ill, A, B, C). The teeth on one side of the Hindi hybrid 

 calyx are I'olled back in the photograph. (Natural size.) 



Plate V. P.racts and calyxes of cotton grown at Gizeh, Egypt : A, B, Of two 

 flowers of Hindi- like Upland cotton from Cochin China, grown by Mr. F. 

 Fletcher ; C, of a relative of the Egyptian cotton from the Niam-Niam 

 country of central Africa, grown by Mr. W. Lawrence Balls. 



Plate VI. Bolls of Egyptian and of Hindi cotton grown at Somerton, Ariz., 

 in the season of 1909, showing differences in the shape and the markings 

 of the surfaces: A, Egyptian; B, Hindi. The tooth calyx of the Hindi 

 cotton can be contrasted with the truncate saucer-like calyx of the 

 EgypliiMi. (Natural size.) 

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