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WILLIAM EUGENE PICKLER 



content on the diastase in the dormant barley grain. The fac- 

 tors, temperature and water content, have been the repeated 

 subjects of investigation on the respiration of barley grains. 

 The results show a general uniformity in that a rise of tempera- 

 ture as well as a rise in water content markedly affects the respira- 

 tion. As already stated, the experiments of Kolkwitz (1901) 



TABLE 4 

 Determination of diastase activity. Average of 2 trials 



first acquainted us with the effect of increased water content of 

 the barley grain on its respiratory activity. Other investigators 

 have had similar results. Bailey and Gurjar (1918) have re- 

 cently contributed an elaborate investigation on the relation be- 

 tween respiratory activity and water content of stored grain. 

 Their results on the respiration of Haynes Bluestem (Minnesota 

 169) wheat is of especial interest and is reproduced below. 



