W. E. BllENCIILEY AND A. D. HaLL 



205 



approximately constant (hiring the whole formation of the grain. Similar 

 constant ratios are obtained between the nitrogen, phosphoric acid and 

 carbohydrates, the carbohydrates being reckoned as dry matter less 

 protein and ash. 



Nitrogen 



Table I. 



Phosphoric acid ' 



Ratio. 



R.F. 

 1908 

 Plot 3 

 Plot 10 



6 9 • 12 16 18 21 24 27 30 33 



Fig. 8. °/o ash in dry matter, 1907 and 1908. 



36 39 days 



It may be noted here that when wheats from different plots, &c. are 

 compared, there is no connexion between the actual percentage of 



