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. 
