97 



The charges were placed at night after the workmen had left, but 

 one room above was not fumigated. The next morning, after airing 

 the building for a couple of hours, the insects were brushed up and 

 destroyed. Quite a number of these insects were found on the 

 upper floor where no charge was j^laced. They appeared to have 

 been stupefied, and staid in that condition till they could be swept 

 lip and destroyed. 



Mr. Sanderson had found such fumigation for fleas effective, even 

 under circumstances where eggs must have been present. 



Mr. Titus reported, however, that he had known instances where 

 even two or three trials had failed to eradicate fleas. 



The following papers were then read: 



INSECTS COLLECTED FROM THE FLOWERS OF TREE AND BUSH 



FRUITS. 



By W. E. Bkitton and Henry L. Viereck. 



[WithdvaAA'D for publication elsewhere.] 



A DESTRUCTIVE PTINID NEW TO NORTH AMERICA. 



By James Fletcher. Ottaica, Canada. 

 [Withdrawn for publication elsewhere.] 



INJURIOUS INSECTS OF THE YEAR IN CANADA. 



By James Fletcher. Ottaica. Gauada. 

 [Withdrawn for publication elsewhere.] 

 The following paper was then presented : 



THE AMOUNT OF INJURY FROM THE COTTON BOLL WEEVIL. 



By E. DwiGHT Sanderson, Durham. X. H. 

 [Withdrawn for publication elsewhere.] 



THE COFFEE LEAF-MINER (LEUCOPTERA COFFEELLA Stain.). 



By Mel. T. Cook, ISaiitiago de las Vegas, Cuba. 



Probabl}' the greatest enemy of coffee in the AVest Indies, and espe- 

 cially in Cuba, is a small moth, the coffee leaf-miner {Le^icoptera cof- 

 feella Stain.). According to the Annual Report of the Office of 

 Experiment Stations (1903), United States Department of Agricul- 

 ture, from 20 to 40 per cent of the leaves on each tree in Porto Rico 

 were affected. The coffee on the farm of the Cuban experiment sta- 

 25524— No. 52—05 M 7 



