19 



Comparing oata Hienrich (41) O onsidered that lie had 

 found very little difference in feeding value between oats 

 of heavy and light weight. In general the lighter grains 

 had more fibre and less carbohydrates. 



Johannsen (42) found great variation in the nitrogen 

 content of fully developed ripe barley grains from different 

 heads of the same variety of barley grown under like con- 

 ditions. Ho definite law relative to this variation was 

 found but in general the nitrogen content increased with 

 the weight of the kernels. By careful selection, for four 

 years, a strain of barley was found which yielded heavy 



grains low in nitrogen. A later and fuller table may be 

 found in the Experiment Station Record, Vol XII page 236. 



Snyder (43) submits results to show that light-weight 

 kernels contain a somewhat larger percent of nitrogen, 

 phosphoric acid and potash than the heavy seed but the total 

 amount of these is much less. 



Sperling (44) was unable to correlate weight in barley 

 seed with protein content. 



Shaw (45) working with California white wheats, con- 

 cludes that the normal kernels usually carry a larger per 

 cent of nitrogen than smaller kernels of the same type. 



It is important to have a good start because three 

 fourths of the total mineral matter is taken from the soil 

 in the first fifty days (46) . 



The Minnesota Station presents a table of the composition 

 of the ash of heavy and light weight wheat kernels. Under 

 the head of total ash in the wheat is given the number of 

 pounds of ash in every hundred pounds of wheat. The figures 

 given for the potash, lime, etc. are the per cents of those 



