300 THE REPORT OF THE No. 36 



The (Cost of Applying the Kansas Formula. 



At Bowmanville, Ont. 



100 lbs. bran $1 25 



5 lbs. Paris green 1 25 



2 gals, molasses 1 00 



15 lemons 30 



Labour, 6 hours 1 20 



$5 00 

 Applying 20 lbs. of the bran to 4 acres the cost comes to 25 cents per acre. 



At St. Etienne des Gres, Que. 



20 lbs. bran $0 25 



1% lbs. Paris green 38 



2 qts. molasses 22 



Fruit 05 



$0 90 



In this locality the 20 lbs. was scattered over 5 acres, the cost being 18 cents 

 per acre, exclusive of labor. 



Mr. R. Davey, of Tyrone, Ont., used the Kansas formula during the past 

 season and he informs me that the cost was about 20 cents per acre. 



The Pkesident : This subject is naturally one of very great interest to Can- 

 adians, because locust control has become a very serious question with us in many 

 parts of Canada. We were very fortunate in being able to make use of the results 

 of the Kansas people and also in discovering that their formula gave such good 

 results in the first season. It is particularly important in Quebec where it is not 

 generally realized how serious the locusts are. I had a long conversation with 

 Fathers Fusey and Trudel regarding the outbreak of locusts in the Three Rivers 

 region, in the neighborhood of Valmont. In that region where the soil is sandy 

 the results have shown that the mixture killed upwards of 1,200 locusts to the square 

 yard. This shows not so much the effectiveness of the mixture as the abundance of 

 the locusts in that region, and so serious are they that large numbers of farms have 

 been abandoned and people are leaving the district. When a situation like that 

 arises, locust control becomes a serious question, and is raised from being an in- 

 teresting problem to the entomologist to an important economic question. Mr. 

 Gibson has not mentioned the fact, but it may be interesting to those present to know 

 that the Entomological Branch has also been carrying on some experiments in the 

 use of the bacterial disease, the Coccohacillus of Dr. Herelle of the Pasteur Insti- 

 tute, Paris, France. Two years ago through the kindness of the Director of that 

 Institute, I was able to obtain some of Dr. Herelle's culture from Paris, and last 

 year (1913) Mr. Petch, who had charge of this work, carried out some preliminary 

 experiments at the laboratory at Covey Hill, Que., where he found that the hacillus 

 was pathogenic for Canadian species, which is interesting, hut owing to the conditions 

 we were not ahle to try it out on a large scale. We continued the experiments this 

 year with the same results both regarding the Coccohacillus being pathogenic to 

 our species, and in being unable to ohtain results on a large scale. The failure of 

 the experiments in the field was not so much due to the fact that the Coccohacilltis 

 cannot be utilized under field conditions, but to the fact that we had to send the 

 bouillon culture so far from our lahoratory. Our laboratory was in Quebec, and it 

 had to be shipped to Montreal and thence to Ottawa. The conditions are such that 

 the culture does not remain in a viable condition more than 48 hours. 



