56 



FOREST commissioner's REPORT. 



Growth on Spruce in Cut-over Land. Mixed Timber. Best Conditions. 



taken, trees between seven and fourteen inches diameter 

 were cut into as they were come to without selection, the 

 only pi-ecaution taken being to get no unrepresentative 

 trees — none, that is, that were very liadly suppressed and 

 none that had a very unusual crown development. In 

 arranging results, however, the trees have lieen grouped 

 of l^a'^ilfe^* according to their diameters, and examination of 

 Inferences, ^.j-^g table will show why. Compare the last two 



columns for instance. Note the steady decrease of percent- 

 age as you go up the scale of sizes. Note the opposite 

 tendency of the growth in actual volume. Note by study of 

 the last column that trees have just begun to lay on wood 

 profitably at ten or eleven inches in diameter, and see how 

 much is lost if they are not allowed to stand longer, but are 

 cut at that time. Mark also the column which shows the 

 rate of diameter growth. This is most rapid at ten and 

 eleven inches diameter, amounting then to an inch in six and 

 one-half years. Above that it shrinks gradually to an inch 

 in eight and one-half years. The growth in volume, however, 

 still increases. It is only that a somewhat larger volume of 

 wood spread over a much larger area makes a thinner layer. 

 This table, alone and in comparison with others of the same 

 nature, given later on, will bear close and repeated examina- 

 tion. 



