AGRICULTURAL TEXT-BOOK. 



possible cultivation of wheat towards the Equator oscillates be 

 tween lat. 20 and 25. It is 1 grown successfully in Chili, and 

 Rio de la Plata. In southern Peru it grows at a height of 

 8,500 feet; and at the foot of the volcano of Arequipo, at a 

 height of 10,600 feet. 



The introduction of this grain into the United States was in 

 1602, when it was sown on the Elizabeth Islands in Massachu 

 setts. In 1611 it was sown in Virginia; and in 1648 many 

 hundred acres of it were cultivated in that colony ; though it 

 was afterwards neglected to give place to Tobacco. It was in 

 troduced into the Mississippi Valley in 1718, but owing to the 

 character of the soil and climate, succeeded badly, running to 

 straw instead of grain; yet in 1746 it became an article of ex 

 port from the Wabash to New Orleans. The principal wheat- 

 producing States are 



During these ten years there was a gain on the whole crop 

 of the United States of 15,645,378 bushels; while the crops of 

 New England decreased from 2,014,000 to 1,090,000 bushels. 

 In 1849, the wheat crop of the United States amounted to 

 100,503,899 bushels. It is estimated that one bushel of seed 



