no 



Nature-Study Agriculture 



Conditions 

 in North 

 and South 



How durum 

 wheat was 

 found 



FIG. 



W. T. SUlling 

 Sheaves of barley, rye, and wheat (left to right). 



September or October and, after coming up during the 

 mild autumn weather, becomes covered with snow and 

 so lies dormant but green until spring, when it begins 

 to grow again. 



In the extreme northern part of the United States 

 the weather is too cold for wheat to live through the 

 winter, and only spring varieties can be grown. In 

 the southern part of the wheat belt, even spring wheat 

 will live through the winter and is sometimes sown in 

 the fall. 



In 1898, the Department of Agriculture sent an ex- 

 plorer to Russia to look for new varieties of wheat. 

 He brought home seed of durum wheat, which has been 

 found to resist drought better than any other variety. 

 It contains less starch and more of the muscle-building 



