110 



Horticultural Department. [Bulletin 120 



SPRUCES. 



With regard to the spruces, the opinions expressed in Bulletin No. 

 10 are especially applicable. The White spruce, Picea alba, and the 

 Colorado Blue spruce, Picea pung ens, were the only ones not seri- 

 ously affected by the severe drought of 1901. A number of Douglas 

 spruce, Pseudotsuga douglasii, died during the season, and others 

 were noticeably injured, the leading shoot of several dying before fall. 

 The Norway spruce, Picea excelsa, was likewise injured. Fewer 

 trees were entirely killed, but many were seriously injured. 



TABLE X. COLORADO BLUE SPRUCE ON COLLEGE CAMPUS. 



1897. 



1902. 



TABLE XI. DOUGLAS SPRUCE ON COLLEGE CAMPUS. 



