THE STEMS 



In the first table below is given the length of the ear, and the separate 

 internodes of the straw from week to week, from the commencement 

 of the " shooting " period to the time at which the straw reached its 

 greatest height ; in the second table the increase in length from week to 

 week is recorded. As the stems are at first hidden by the surrounding leaf- 

 sheaths and cannot be examined when young without destroying the 

 plants, measurement of the growth of a single individual straw cannot 

 be carried out. The figures from April n to May 30 are averages 

 obtained from ten straws of similar size and development ; those from 

 June 6 onwards, however, refer to a single stem, the parts of which were 

 clearly visible and easily measured after this date. 



TABLE I 



LENGTH OF THE STRAW AND EAR OF A SQUAREHEAD WHEAT AT 

 WEEKLY INTERVALS FROM APRIL n TO JUNE 27, 1914 



Whole 



