3i6 



Forestry Quarterly. 



unexposed check is especially felt. 

 the large number of Red pines 

 shade. 



Another unexpected result is 

 dying after exposure in the 



Table I showing the Hourly Weather Conditions, April 19, 1914. 



PERIODS OF EXPOSURE. 



Duration. 



10 min. ^ 



20 



30 



40 



50 



60 



I hr. V 



2 



3 



4 



5 



6 



7 

 8 



9 

 10 



Time 

 11.45 a. m 

 11-45 

 11-45 

 11-45 

 ir-45 

 11-45 



6.40 



6.40 



6.40 



6.40 



6.40 



6.40 



6.40 



6.40 



6.40 



6.40 



of Day. 



—11.55 a. m. 



— 12.05 P- m- 



—12.15 



— 12.25 



-12.35 



—12.45 



— 7.40 a. m. 



— 8.40 



— 9-40 

 —10.45 



—11-45 

 —12.55 



— 1.30 



— 2.45 



— 3-40 



— 4-40 



' Sun exposure for 10 minute series was 2 min. in shade, the rest (8, 

 18 etc.) in full sun. 



* All Red pine started at 6.40, White pine at 6.45 a. m. All planted 

 about 7 p. m. 



