313 



The followino; table shows the diflferences for the varieties raised 

 in the respective States : 



The effect of climate and soil on wheat is strikingly shown in that a 

 soft plump yellow wheat from Oregon and a small hard red variety 

 from Minnesota, when used as seed in Colorado, in three years' time 

 had lost nearly all their differences, so as to look more like Colorado 

 grain than like their own originals." 



A study of 38 varieties grown during seven years on one farm in 

 Colorado shows a progressive change, as in the following table : 



These determinations show plainly that the soil and other condi- 

 tions in 1885 would not produce as good a crop from introduced seed 

 as in 1881, and that the drop in character of the crops as a whole is 

 due as much or more to soil than to season. The seven varieties 

 grown for several years in Colorado which showed no signs of deteri- 

 oration are on this account worth considering, since they are perhaps 

 the varieties to select for the locality, because they may be more 

 suited to the conditions there existing than any others. Attention 

 is called to the fact that deterioration in quality, as evidenced by 

 diminution of albuminoids, is shown by the loss of weight per bushel. 

 In the present case a drop of 1,2 per cent in albuminoids was accom- 

 panied by a loss in weight of 3 pounds per bushel. No other cereal 

 seems to be influenced by its environment in the same way as wheat. 

 Oats are more changed, by climate and soil, in the outward physical 

 appearance and properties of the grain; barley is modified in its 



a There is nothing to show how nmch this may have been due to spread of 

 pollen from one field to the other. — C. A. 



