VI HOW CROPS GROW. 



confined to editing and communicating the results of the 

 labors of others. 



He will not call it a misfortune that other duties of life 

 and of his professional position have fully employed his 

 time and his energies, but the fact is his apology for be- 

 ing a middle man and not a producer of the priceless com- 

 modities of science. He hopes yet that circumstances 

 may put it in his power to give his undivided attention to 

 the experimental solution of numerous problems which 

 now perplex both the philosopher and the farmer ; and 

 he would earnestly invite young men reared in familiarity 

 with the occupations of the farm, who are conscious of 

 the power of investigation, to enter the fields of Agricul- 

 tural Science, now white with a harvest for which the 

 reapers are all too few. 



