286 



JOUnXAL OF ECONOMIC ENTOMOLOGY 



[Vol. 7 



immediately beneatli the chloride of lime in spite of a thunder-storm 

 and heavy rain which should have carried the chloride of lime in solu- 

 tion through the upper layers. Covered pile same day, August 9. 



Exj). No. 11 (4)- Zenoleum treatment. Manure piled August 

 8th. August 9th larvae in third stage were found very numerous 

 immediately below the surface of pile. Sprayed with zenoleum (3 

 ounces to 1 gallon of water) same date, using 4 gallons of the solution. 

 Larvse immediately beneath the surface were killed and about 20 

 minutes after spraying larvse were found emerging on to the top of the 

 manure, no doubt to die. An hour after the heap had been sprayed 

 torrential rains fell and as a result the dilution of the insecticide would 

 probably be affected. Pile covered August 10th. 



Fig. 21. Covered and uncovered manure piles used in the experiments 



Exp. No. 11 (5). Chloride of lime; mixed treatment. Manure 

 piled August 12th. As it was being throwTi in the enclosure chloride 

 of lime was lightly scattered over the top and on the sides, 4f pounds 

 of the chemical being used on the cubic yard of manure. This manure 

 had lain in the stable from 1 to 3 days. Pile covered August loth. 



Exp. No. 11 (6). Kerosene emulsion treatment. ]VIanure piled 

 August 12th. On August 15th third stage larvae found in upper layers. 

 Pile sprayed same day, August loth, with kerosene emulsion 1 in 9 

 strength; 4| gallons used for the whole pile. This pile contained a 

 little more straw than other piles. Pile covered August loth. 



