ENVIRONMENT OF THE BOLL 123 



of the environment affect the length and strength in the 

 same way, but in bolls of different ages. The interval, 

 in the case of a certain pure strain in a cer- 

 tain site and season, was twenty-three days. 

 Absolute regularity of lint is unattainable, even with a 

 pure strain, but apparently much might be done to im- 

 prove in this direction by shortening the picking interval 

 with discretion. Whether the cost of so doing would 

 exceed the cost of producing the same result by Combing 

 remains to be seen. 



