96 PRIZE ESSAY : 



— Not generally practicable, and too mucli dependent upon wind 

 to be of much utility. 



2. Sowing with lime, or ashes, or gypsum when tbe flies are 

 in the act of depositing their eggs. Experience and observation 

 have shown this artifice to be without any effect. Instances have 

 often been cited when it has proved of value, in Ohio, Vermont, 

 Canada. The true reasonmust have escaped observation. Wheat 

 in blossom strewed with lime will not deter the insect from de- 

 positing their eggs, as observation has most distinctly shown. 



3. Early sowing. — In the absence of the Hessian fly this arti- 

 fice is no doubt valuable with regard to winter wheat. 



4th. Late sowing of spring wheat — of value where rust is not 

 likely to prove equally destructive as the midge. "With good 

 varieties of wheat this remedy is probably the best that can be 

 suggested. Mauy instances are recorded of the very successful 

 employment of this simple artifice. In the Canadian Agricul- 

 turist for September, 1856, the late Mr, John Wade, of Hamil- 

 ton Gardens, county Northumberland, describes a kind of wheat 

 adapted to late spring sowing, which appears to possess the re- 

 quired qualities. 



" The Fife is now as good after being grown 7 years as it was 

 at first, without the least sign or vestige of failure in any shape 

 except from weevil ; and to know that you can be sure of a 

 crop of wheat sown as late as the 10th of June, and to fill and 

 ripen without a speck of rust, and yield 20 to 30 bushels an acre, 

 is surely a consideration." 



5th. Fumigating ivith sulphur. — Is not the remedy, when 

 practicable, as bad as the disease ? Sulphurous acid — the result 

 of burning sulphur in air, is a most deadly vegetable poison. 



6th. Fly-proof wheat (so called). See paragraphs 108-112. 

 The Black Sea wheat has long been a favourite in Canada, it is 

 now fast deteriorating in some of the qualities which commend- 



