9 



Fifteen samples of 100 green bolls taken from one field at 

 Gemmeiza, September 19, 1916. The figures given are the number of 

 attacked bolls. 



TABLE VI. 



Average : 54 '0. 



Twenty-one samples of 100 green bolls taken in small quantities 

 from many places in Beni Mazar Markaz, November 6, 1916. 



TABLE VII. 



Average.: 85 '9. 



From the above four tables, . in which the numbers of attacked 

 bolls have been arranged in sequence, it will be seen that any single 

 sample of 100 green bolls taken at random may vary from the average 

 for the field or district to the extent of ten above -or twelve below. 



