34,2 



NINETEENTH REPORT. 



PICEA EXCELSA. 



The Picea excelsa seeds were sown in the spring of 1916 (April 26) 

 and the beds were reasonably well filled when the experiment was 

 started. The damping off seemed to have affected this bed less than the 

 other two. 



The results of the preliminary measurements made at the start (June 

 28, 1916) were as follows: 



Nos. I, II, III, IV. 



Top. 



1.0 cm. 

 1.0 



2.0 

 Av. 1.0 



Hypocotyl. 

 1.5 cm. 

 1.0 



2.5 

 Av. 1.2 



Measurements of July 5, 1916, were; 



Top. 

 1 .5 cm. 

 1.5 



3.0 

 Av. 1.5 



1.5 



1.7 



3.2 

 Av. 1 . 6 



No. I. 



Hypocotyl. 

 1 .5 cm. 

 1.5 



3.0 

 Av. 1 . 5 



No. II. 



1.0 

 1.0 



2.0 

 Av. 1.0 



Tap Root. 

 4.0 cm. 

 3.7 



7.7 

 Av. 3 . 8 



3.5 

 3.5 



7.0 

 Av. 3 . 5 



No. III. 



Measurements of July 12, 1916, were: 



No. I. 



No. III. 



