WOODLOT FORESTRY. 13. 



grading, others by the enforced felling of chestnuts or of groups 

 of large pines. The total area was about two acres. To redeem 

 this land from idleness, and at the same time to get some know- 

 ledge of the values of various trees in such situations, it was 

 planted in May to scotch pine, white pine, austrian pine, norway 

 spruce and douglas fir. The little trees, none of them over a 

 foot high, many less than four inches, with not a few seedlings 

 of pitch pine and scrub* pine, which the increased sunlight has 

 caused to germinate, now promise to thrive and add to the 

 diversity, interest and value of the reserve. 



Planting in gaps, or planting anywhere when protection is 

 assured and natural forest is lacking, is good policy. The cost 

 in this case, counting trees, freight and labor, was at the rate 

 of $9 an acre. That is, trees of the same kinds and size could 

 have been planted solid 6x6 feet, or 1,210 per acre, for that 

 amount. The spacing here was necessarily very irregular. 



A STUDY OF THE GROWTH. 



The forest having been put in good shape, a study of the 

 yearly growth, as indicated by the Tings on the stumps of the 

 felled trees, revealed some interesting facts in the lives of the 

 various individuals. Most of the larger trees made a fairly uni- 

 form and rapid growth up to twenty years of age, from which 

 time on it began to drop off, more or less rapidly according as 

 the stand in which the tree grew was more or less crowded. 

 In fact trees of all sizes maintained or diminished their rate 

 of growth according as they were the stronger or the weaker 

 individuals in their particular groups. 



Figure 8 shows plainly the variation which is found in trees 

 of the same age, in the same stand, and grown under practically 

 the same conditions except that of spacing; thus A is from a 

 black oak, 41 years old; B from a chestnut oak, 45' years old; 

 C from a chestnut, 44 years old; D from a post oak, 43 years 

 old ; B from a white oak, 40 years old ; F from a maple, 40 years 

 old and G from a sassafras, 40 years old. The black lines are 



