Figure 9. --Serrulate margins on 1 

 month-old juvenile leaves of 

 white spruce. 



accumulated in the next 105 years. More information on this study is published 

 in Technical Note No. 47, "The development of forest soil organic layers in 

 relation to time in Southeast Alaska". 



^ Seasonal Growth Data--Birch, Spruce, and Aspen. --Paper birch leader 



growth near Fairbanks in 1958 started the last week in May and ended the 

 beginning of the second week in July. The season's growth occurred in less than 50 

 days, 90 percent of it in one month. Radial growth of birch, white spruce, and 

 aspen started about the beginning of June and ended the middle of July. 



This information was obtained as part of a study of the biology of the spear - 

 marked black moth and is presented in greater detail in Technical Note No. 46 

 "Some seasonal growth data for paper birch, white spruce, and aspen near 

 Fairbanks, Alaska- -1958". 



^ Birch Growth and Volume. --Field and office work for a study to determine 



the capacity of Interior forest lands for growing paper birch is nearly com- 

 pleted. A report will be published shortly. Height-diameter volume tables for 

 paper birch are completed. 



18 



