48 PRACTICAL FORESTRY IN THE ADIRONDACKS. 
Present yield per acre of Spruce, amount which can be cut in 10, 20, and 30 years after 
lumbering, and the number of years which must elapse before the same amount can be 
obtained again, cutting down to 10, 12, and 14 inches—Continued. 
B.—SPRUCE PER ACRE 12 INCHES AND OVER IN DIAMETER BREAST HIGH. 
| Vield of all trees | 
Yieldof | j2inchesand | Second cut after Second cut after | Second cut after 
all trees | over in diameter, | 10 years. 20 years. 30 years. 
10inches| )reast high. Interval 
and over | required 
in dia- | etween | 
qabEae. ee ee Percent | ‘Percent. | ee vt equal | 
breast age o |} age o age of | | cuts, in | 
high, in yield or peat first cut Fie d | first cut eee first ent _ years. | 
board | Saas over 12 | 4 over 12 | | over 12 
feet ioe inches. | inches. | inches. bs 
: : | | | | 
ae 2 So ae eyes Gol We ale as 9 10 | 
| | | | i | | 
1, 000 76 740 68 503 140 1, 036 260 | 1,924 | 15 
2,000 © 7 1, 480 49 729 93 1,376 180 2, 664 21 
3, 000 83 | 2,490 38 950 09 1,718 132 | 3, 287 24 
4, 000 85 | 3,400 32 1, 088 59 | 2,006 110 | 3,740 29 
5,000 | 85 | 4, 250 29 1, 233 54 | 2,295 97 | 4,123 | 31 
6, 000 85 | 5,100 27 1, 377 52 | 2, 682 90 | 4,590 32 
7, 000 85 | 5,900 26 1, 547 51 | 3,035 88 3, 825 33 
8, 000 86 | 6,880 20 1, 720 4j | 3, 234 82 | 5, 236 35 
9, 000 87 | 7,830 24 1, 879 41 | 3,210 72 | 5, 642 36 
10, 000 87 | 8,700 21 1, 827 34 | 2,958 60 | 5, 638 38 
C.—SPRUCE PER ACRE 14 INCHES AND OVER IN DIAMETER BREAST HIGH. 
| viel na He wield, Maes paces al Second cut after 10 | Second cut after 20 | 
trees 10 | ameter, breast high. Se =f aria lin tase 
ince: a : quired be 
amet, Sethe cae Eee Preate a | 
s o s steu z 
Sa a [ee Bree) Board feet. | over 14 [Board feet. | | over 14 Board feet.| years. 
feet. | pd inches. | inches. | 
ig daa ee eee Tey eS as | 8 
1, 000 | 53 530. | 82 | 435 | 160 | 848 | 13 
2,000 | 57 1, 140 70 | 798 136 1, 550 16 | 
3,000 | 61 | 1,830 | 57 | 1,043 114 2, 086 19 | 
4,000 | 64 2,560 | a6 |) 1) 179." 96 2, 458 21 | 
5,000 | * 66 | 3,300 | 43 | 1,419 90 | 2,970 a1 | 
6, 000 66 3, 960 42 1, 663 87 3, 505 21 | 
000 67 4, 690 41 1, 923 84 3, 940 21 | 
| 8,000 68 440 39 2,122 78 4, 243 22 
| 9,000 68 | 6, 120 36 2, 203 70 4, 284 24 
| 10,000 69 | 6,900 33 2,277 64 4, 416 26 
| t 
APPLICATION OF THE YIELD TABLES. 
In order to show the character of the problems which can be worked 
out by the yield tables, six examples are given mainly as they appear 
in ‘*The Adirondack Spruce” to illustrate the reconstructed tables. 
The application of the tables to-Nehasane Park and the Whitney 
Preserve is shown on page 65 in connection with the proposeé plan 
of forest work. 
