PLATE XXIV 
Bolls of Egyptian cotton (natural size). 
Fig. i.—Nubari variety. 
Fig. 2.—Yuma variety. 
Fig. 3.—Pima variety. 
Note the close resemblance in the bolls of the Nubari and the Yuma varieties, and 
the different shape and shallower pitting of the bolls of the Pima variety. 
