OF AGRICULTURE. 157 



ture a very high testimony in the mouth of a 

 French gardener who himself comes from the 

 model marais of Troyes. 



And while people in London continue to pay 

 almost all the year round twopence for a lettuce 

 (very often imported from Paris), they have at 

 Chicago and Boston those unique establishments 

 in the world where lettuces are grown in immense 

 greenhouses with the aid of electric light ; and 

 we must not forget that although the discovery 

 of " electric " growth is European (it is due to 

 Siemens), it was at the Cornell University that 

 it was proved by a series of experiments that 

 electric light is an admirable aid for forwarding 

 the growth of the green parts of the plant. 



In short, America, which formerly took the 

 lead in bringing " extensive " agriculture to 

 perfection, now takes the lead in " intensive," 

 or forced, agriculture as well. In this adapta- 

 bility lies the real force of American competi- 

 tion. 



