346 NINETEENTH REPORT. 



were very scarce in some parts of the bed. This hindered subsequent 

 measurements. The results on Pinus resinosa are only partial and are 

 given only for what they may be worth. 



Measurements taken June 28, 1916^ were as follows: 



Nos. I, II. Ill, IV. 



Top. Hypocotyl. Tap Root. 



1.5 cm. 2.0 cm. 1.5 cm. 



1.5 2.5 2.0 



3.0 4.5 3.5 



Av. 1.5 Av. 2.3 Av. 1.7 



On July 5, 1916, the measurements taken were as follows: 

 No. I. No. III. 



Measurements made July 12, 1916, were: 



No. I. No. III. 



On August 9, 1916, measurements were made, but on Bed IV only, 

 due to the fact that the removal of seedlings from the other three beds 

 would not have left enough for satisfactory final measurements. 



