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4. The ratio of the weight of grain to that 

 of the straw is :: 47 : 100. 



An hectolitre (3 3-10 bushels,) weighs 175 

 pounds. Its average price is $3.50. 



The price of straw per 100 pounds is about 

 25 cents. 



A sheaf of 100 Kilogrammes (225 pounds,) 

 is composed of 



Grain, 32 Kilogs, ( 72 lbs.) containmg of 



nitrogen, 0^.800 (1.8 lbs.) of value $1,15 

 Straw, 68 « (153 lbs.) « .189 (0.42 lbs.) « 0,41 



Total of nitrogen, (2.22 lbs. ) $ 1 ,56 



Ok.959 (2.22 lbs.) are found in the cameline cake, value 29 



Difference $1,27 



Thus 18 Kilogrammes (40 lbs.) of marc be- 

 coming a sheaf of wheat, is augmented in 

 proper value, 6 fr. 36 c. (^1.27.) But sup- 

 posing that we realize but one half or even a 

 third of the amount indicated by theory, it 

 is still evident that the application of the seed 

 cake or marc should be tried, and that nothing 

 should be neglected to ensure its success as a 

 manure.^' 



