160 THE FARMER OF TO-MORROW 



We have already seen that the introduction 

 of the rare date, the Deglet Noor, seemed 

 destined to failure because a climate, otherwise 

 propitious, in southern Arizona, did not fur- 

 nish a brief ripening season at the right time. 

 This difficulty was solved by incubation pro- 

 ducing an artificial condition of climate. The 

 truck-growers about Paris have carried this 

 same idea to a point where these farms under 

 glass are capitalized at $10,000 an acre, by 

 transporting soil thousands of miles, and re- 

 producing every particular of temperature 

 and humidity that make for the perfection of 

 special varieties of fruit and vegetables. 



Two provinces in little Belgium provide the 

 world with its endive salad; one province in 

 Spain, Almeria, furnishes the world with a 

 Malaga grape that will bear ocean shipment. 

 Corn grown in California differs in its content 

 of proteids and carbohydrates from that grown 

 in Illinois. Long-staple cotton from the 

 Brazos Valley, Texas, transplanted to Egypt 

 becomes a short-staple variety; and emigrant 

 Swiss who thought to transplant a cheese in- 

 dustry to Wisconsin failed utterly, even with 

 their own Swiss cattle, because the hills of 

 Wisconsin could not reproduce the grass of 



