46 FIELD CROPS FOR THE COTTON-BELT 



the bolls in this group varies with the variety, soil and cli- 

 mate. The smallest bolls produce approximately 6.5 grams 

 of seed cotton each, requiring about 68 bolls to yield a 

 pound of seed cotton. 



The plants are rather vigorous growers. The limbs 

 are large and short-jointed, giving the plants a stocky 

 appearance. The leaves are large, with broad, short 

 lobes; seeds large, fuzzy, and dark green or brownish gray. 



An important subdivision of the big-boll group includes 

 the big-boll storm-proof varieties developed west of the 

 Mississippi, more especially in Texas. The leading vari- 

 eties in this subdivision are Triumph, Rowden, and Texas 

 Storm-proof. The development of these varieties has 

 taken place on the western plains where cotton is more 

 subject to severe storms than elsewhere in the cotton- 

 belt. 



53. The long-limbed type. The varieties of this 

 type have been more or less abandoned because they are 

 late and not very prolific. The most important repre- 

 sentative of this group is the Petit Gulf variety, which 

 at one time was very popular. It often happens that the 

 Petit Gulf cotton is so badly mixed with other cottons 

 as to make it a poor representative of the long-limbed 

 type. 



54. Intermediate varieties. No description can be 

 given of the varieties in this group. Those varieties in 

 which the characters of two or more groups are combined 

 so as to make it impossible to place them in any of the well- 

 defined types are classed as " intermediate varieties" for 

 convenience. 



55. Long-staple upland varieties. The distinguish- 

 ing character of this group is the length of the lint which 

 varies from 1 3 / 16 to 1% inches (30 to 45 mm.). The plants 



