YIELD TABLES. 
YIELD TABLES. 
83 
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 1£ inches, are shown in the fol- 
lowing tables: 
Yield of 
all trees 
10 inches 
and over 
in diam- 
eter 
breast 
high, in 
1,000 feet 
B.M. 
Yield of 
all trees 
10 inches 
and over 
in diam- 
eter 
breast 
high, in 
1,000 feet 
B.M. 
ecceee 
eesene 
cecece 
seceee 
erzrece 
erccees 
neceese 
weoese 
Yield of Spruce per acre 10 inches and over in diameter breast high. 
Amount of Second cut after 
first cut. 10 years. 
\Num- | Num- 
ber of ber of 
acres.| Board | Stand-) mer- Board Stand 
feet. | ards. jchant-| feet. | ards. 
able 
trees. 
Io WeaiG eleser| ee ss. 3) os5le aee0 
213) 253882, 14545 es] — Bas] = A ye 
223 3,480, 21.50 sa — BAB) 2 2 
204 4,228) 25. 74 Us) BU Aa 5D) 
106 5, 213) 31.98 183 365) 2.48 
1p 6,005) 37.32 8.8 440) 2.99 
37 7,405) 48.16 iO, 3} 515) 3.50 
21 7,868) 47.78 9.4 517) 3. 57 
4 9,449) 57. 60 Te? 396) 2.74 
5} 10,499) 60.92 S56) 473) 3. 27 
Pe O9S i G8oai7 10.0 550) 3.80 
2| 11,772) 73.19 13.0 715) 4.94 
Second cut after Second cut after 
20 years. 30 vears. 
Num Num- 
ber of ber of 
mer- |Board| Stand-| mer- |Board! Stand- 
chant-| feet. | ards. |chant-| feet. | ards. 
able able 
trees trees. 
12.11 738| 4.84! 20.8) 1,685] 10.82 
LONI S68 ie SNCt ye leans GON eNO 4 
TASS Ole 6. 03 23.5) 2,183) 14.18 
15. 7| 1, 070 7.14 25.9} 2,420) 15.57 
16. 2) 1, 087 7. 26 26. 8/ 2,483) 15.99 
18.5) 1,581 8.40, 30.4] 2,913) 18.80 
20.9} 1, 436 9.58 33. 7] 2,988) 19.43 
19.2) 1,366 9.18 32. 1) 2,899) 18.95) 
Ney OL, BBY) 8. 36. 30. 9} 2,670) 18.65 
17.0} 1,043] 7.18 29.6] 2,938| 17.20] 
30.0) 1,980} 13.40 47.0] 4,488) 29. 20 
26. 5) 1,887) 18.67 46.0) 4,542) 29. 41| 
Yield of Spruce per acre 12 inches and over in diameter breast high. 
Amount of Second cut after 10 Second cut after 20 Second cut after 30 
first cut. years. years. years. 
Num- Num- Num- 
ber of ber of | ber of 
Board | Stand-| mer- | Board |Stand-| mer- Board} Stand-| mer- | Board | Stand- 
feet ards. |chant-| feet. | ards. | chant-| feet. | ards. | chant-| feet. | ards. 
able able able 
trees. trees. trees. 
1, 073 6.53 7.8 632 | 4.00 13.1 | 1,336 | 8.46 | 19.9 | 2,504 | 16.46 
1,927 | 11.80 9.1 845 | 5.68 14.5 | 1,560 | 10. 21 21.9 | 2,935 | 18. 20 
ALOT lO els eta le O29" Gl 57 L729) S50 ele 69) 25.7 Wnona 7 leot ddl 
3, G08 |) Bile ers | We Zh Ty al seul lp 7 oe) WEA) |) ale) | ash ey |) BIL BORE | A OR 
4,341 | 26.22] 14.3 | 1,208! 8.35 216) 25325) 142 71821) 3055, | 41109) | 262.52 
Gy UB Bea Ih a) Pa 412 | 9.01 24.3 | 2,686 | 17.10 | 34.0 | 4,778 | 29.49 | 
6,086 | 39.43; 19.4 | 1,792 | 11.43 29.7 | 3,320 | 21.10 | 40.3 | 5,636 | 34.66 
6,933 | 41.32] 17.0 | 1,696 | 10.97 26.4 | 3,019 | 19.19 | 36.2 | 5,264 | 32.44 
8,473 | 50.97 | 19.5 | 1,946 | 12.59 26.9 | 3,148 | 19.90 | 37.9 | 5,438 | 34.12 
9,155 | 54.52} 16.8 | 1,711 | 11.02 25.4 | 2,964 | 18.80 | 33.8 | 5,283 | 33.73 
9,615 | 58.17] 20.0 | 2,084 | 13.40 30.0 | 3,564 | 22.56 | 50.0 | 7,182 | 46.14 
9,800 | 60.14] 29.0 | 2,957 | 19.97 42.0 | 4,759 | 31.41 | 55.5 | 8,767 | 53.80 
