PROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 743 



A. — Pusa No. 4, 1 lb. in stoppered glass jar : — 



15th May 1916 . . 20 live weevils put in. 



6th July 1916 . . Wt. = l lb. 40 grains ; not affected. 



All the 20 weevils dead ; picked out. 



4th December 1916 . Not affected. 



15th March 1917 . . Wheat unaffected ; 20 weevils put in. 



21st January 1918 . 837 weevils picked out. 



7th November 1918 . 2,100 weevils picked out. Grains decomposed and 

 emitting a bad smell, altogether unfit for use. Weight 

 left after sieving and drying = 13| oz. 



In 10 months 15th March to 21st January the weevils multiplied 41 times and in 

 about 20 months from 15th March 1917 to 7th November 1918 about 147 times. 



B. — PuSa No, 6, 1 lb. in stoppered glass jar :- 



15th May 1916 

 6th July 1916 



20 live weevils put in. 

 . Unaffected. All the 20 weevils picked out dead. 

 Weight of grains = 1 lb. 20 grains. 

 4th December 1916 . Unaffected. 



15th March 1917 . . Unaffected ; 20 weevils put in. 



22nd January 1918 . 1,389 weevils picked out. Benzine was applied to 



stupefy the weevils. 

 7th November 1918 . 28 weevils picked out. 



Weight after sieving, 14f oz. The grains in good condi- 

 tion except that they are bored. They are not 

 decomposed and do not emit any smell. Can be used. 



In about 10 months, from 15th March to 22nd January 1918, the weevils multiplied 

 about 69 times. 



C— Pusa No. 12, 1 lb. 



loth May 1916 

 6th July 1916 



4th December 1916 

 15th March 1917 . 



22nd January 1918 

 7th November 1918 



in stoppered glass jar : — 



20 live weevils put in. 



19 dead weevils picked out, 4 live ones present, evidently 



3 bred out from the grains. The 4 living ones left 



with the wheat. Weight of wheat left=l lb. less 40 



grains. 

 The wheat is affected. 40 grains dust thrown out. 481 



weevils picked out, of which 195 were dead. 

 Weight of wheat after sieving 15^ oz. 

 240 weevils picked out. 

 1,257 weevils picked out. 

 Weight of wheat after sieving and partly drying 13| oz. 



The grains decomposing and emitting a bad smell. 



Altogether unfit for use. To-day only 41 weevils 



found in it. 



In about 7 months, from 15th May 

 about 24 times. 



In 10 months, from 15th May 1916 to 15th March 1917, 

 times. 



In 20 months, from 15th May 1916 to 22nd January 1918, they multiplied about 99 

 times. 



4th December 1916, the weevils multiplied 

 they multiplied about 36 



