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A MANUAL OF FORESTRY 



that seedlings grow very slowly at first, especially under shade, 

 and that a number of years may have been required for the 

 seedling to reach the height of the stump. For this reason 

 stumps to be analyzed should be cut as low as possible. The 



By permission of S.J. Record. 



Fig. 63. Cross section of a conifer (hemlock) highly magnified showing the annual rings 

 of growth. A to B is one season's growth. 



average period required by different species to reach stump 

 height can be ascertained by studying the ages of a few seedlings 

 of the desired height. The average age thus obtained should 

 IH added to the age of the tree as found on the stump. Thus, 

 if there are one hundred and sixty rings on a hemlock stump, 

 two feet high, and a study has shown that it requires fifteen years 



