4 



which they are passed through a rake which very effectively and 

 quickly removes all bolls and leaves. 



It should perhaps be mentioned in passing that after the 1916 

 campaign Mr. Ballou, Mr. Shepherd (Inspector of the Province of 

 Sharqiya), Mohammed Effendi Munir (Inspector of the Province of 

 Minufiya), and the present writer, simultaneously proposed that the 

 bolls should be removed from the sticks after, instead of before, pulling, 

 in order to prevent the dissemination of the bolls in the fields. Most 

 of the other Inspectors, however, strongly opposed the change on the 

 ground that it was impossible to control what happened to the cotton 

 sticks after they were pulled up, and it was also felt that changes in 

 the legislation should only be made when absolutely necessary as it 

 would be very puzzling to the fellahm to have new sets of regulations 

 every year. It was therefore decided to postpone this alteration 

 until the result of the Wadi Tumilat experiment was known. 



In addition to carrying out the field campaign as outlined above, 

 the Ministry supplied all cultivators in the Wadi Tumilat with 

 fumigated seed for sowing purposes in order to eliminate all chances 

 of infection from this source. The campaign was repeated in the 

 winters of 1918-1919 and 1919-1920 with perhaps increased efficiency. 



The figures obtained from boll-counts in 1917, 1918, and 1919 

 are given in Table I, and show that the campaign of 1917 reduced 

 the average percentage of green bolls attacked between July 12 and 

 September 13 from 43 to 29, and that the campaign of 1918 reduced 

 it still further to 22, i.e. approximately one half the figure of 1917. 



TABLE I. Wadi Tumilat. 



* These figures include all bolls which at the time of examination were, or had been, attacked 

 by boll worms of any kind. The overwhelming majority of these worms were, of course, pink 

 boll worms. 



