BALSAM FIR. 



33 



Table 8.— Comparative growth of balsam fir seedlings, in Franklin County, N. Y., in 

 the shade''- and in full light. ^ 



Age (years). 



Height of 

 average trees 

 under aver- 

 age condi- 

 tions of shade. 



Height of 



besi trees 



under full 



light. 



Age (years). 



Height of 



average trees 

 under aver- 

 age condi- 

 tions of shade. 



Height of 



best trees 



under full 



light. 



1 



Feet. 



0.1 

 .2 

 .3 

 .5 

 .6 

 .7 

 .9 

 1.1 

 1.3 



Feet. 



0.1 

 .2 

 .4 

 .7 

 1.0 

 1.5 

 1.9 

 2.5 

 3.0 



10 



Feet. 



1.6 

 1.9 

 2.1 

 2.4 

 2.6 

 2.8 

 3.1 

 3.3 

 3.5 



Feet. 



3.6 



2' 



11 



4.3 



3 



12 



5.1 



4 



13 



5.8 



5 



14 



6.6 



6 



15 



7.4 



7 



16 



8.2 



g 



17 



8.9 



g 



IS 



9.7 









1 Based on 824 trees. 



2 Based on 104 trees. 



Thus, with conditions of growth obtaining under forest manage- 

 ment, the growth in height of balsam fir would be increased more 

 than two and one-half times during the first 18 years of its life (9.7 

 feet as compared with 3.5 feet). 



Tables 9 and 10 give the average growth in height on flat, swamp, 

 and hardwood slope in the State of New York, based on age. 



Table 9. — Height growth of balsam fir in New YorJc, on the basis of age, on flat, swamp,. 



and hardwood slope. 





Flat. 

 (Based on 248 trees.) 



Swamp. 

 (Based on 158 trees.) 



Hardwood slope. 

 (Based on 277 trees.) 



Age (years). 



Maxi- 

 mum. 



Mini- 

 mum. 



Average. 



Maxi- 

 mum. 



Mini- 

 mum. 



Average. 



Maxi- 

 mum. 



Mini- 

 mum. 



Average. 



10 



Feet. 

 8 



13 

 18 

 24 

 29 

 34 

 39 

 44 

 49 

 62 

 56 

 59 

 61 

 63 

 65 

 67 

 68 

 69 

 70 

 71 

 72 

 72 

 73 

 74 

 74 

 74 

 75 

 75 

 75 



Feet. 

 3 

 7 

 11 

 15 

 19 

 22 

 25 

 27 

 29 

 30 

 32 

 33 

 34 

 35 

 36 

 37 

 38 

 39 

 39 

 40 

 41 

 42 

 42 

 43 

 44 

 45 

 46 

 46 

 47 



Feet. 

 5 

 9 

 14 

 19 

 23 

 27 

 31 

 35 

 38 

 41 

 43 

 45 

 47 

 49 

 51 

 52 

 53 

 54 

 55 

 56 

 57 

 58 

 59 

 59 

 60 

 60 

 61 

 62 

 62 



Feet. 

 10 

 15 

 19 

 24 

 28 

 32 

 36 

 39 

 42 

 45 

 48 

 61 

 53 

 55 

 57 

 59 

 60 

 62 

 63 

 64 

 65 

 66 

 67 

 68 

 69 

 70 

 70 

 71 

 72 



Feet. 

 3 

 6 

 8 

 10 

 12 

 14 

 16 

 18 

 20 

 21 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 30 

 31 

 32 

 32 

 33 

 34 

 34 

 35 

 35 

 36 

 37 



Feet. 

 4 

 7 

 11 

 15 

 19 

 23 

 27 

 30 

 32 

 34 

 36 

 38 

 40 

 41 

 43 

 44 

 46 

 47 

 48 

 49 

 50 

 51 

 52 

 52 

 53 

 53 

 54 

 54 

 65 



Feet. 

 8 

 16 

 22 

 28 

 34 

 40 

 45 

 60 

 54 

 58 

 61 

 64 

 66 

 68 

 69 

 70 

 71 

 72 

 73 

 73 

 74 

 74 

 75 

 75 

 75 

 76 

 76 

 76 

 76 



Feet. 

 3 

 6 

 9 

 13 

 17 

 21 

 25 

 29 

 32 

 35 

 38 

 40 

 42 

 43 

 45 

 45 

 46 

 47 

 47 

 48 

 48 

 49 

 49 

 49 

 50 

 50 

 50 

 51 

 51 



Feet. 



5 



15 



9 



20 



14 



25 



19 



30 



24 



35 



30 



40 



35 



45.. 



39 



50 



43 



55 



47 



60 



49 



65 



52 



70 



54 



75 



56 



80 



57 



85 



58 



90 



59 



95 



60 



100 



61 



105 



61 



110 



62 



115.. 



62 



120 



63 



125 



63 



130 



63 



135 



63 



140 



63 



145 



64 



150 



64 







20137°— Bull. 55—14- 



