22 BULLETIN 285, U. S. DEPARTMENT OF AGRICULTURE. 



Plot No. 2. — Age, 75 to 80 years; yield, 22.9 cords per acre; height of dominant trees, 50 to 55 feet. 





Propor- 

 tion 

 based on 

 volume. 



Number 

 of trees 

 per acre. 



Diameter breast- 

 high. 



Volume 

 per acre. 



Average 

 annual 





Average. 



Ex- 

 tremes. 



growth 

 per acre. 





Per cent. 



78.2 



14.7 



7.1 



360 

 328 

 456 



Inches. 

 6.1 

 3.5 

 2.2 



Inches. 

 2 to 12 

 Ito 7 

 Ito 6 



Cubic feet. 



1,519 



286 



138 



Cubic feet. 

 19 00 





3.58 





1.73 







Total 



100.0 



1,144 







1,943 



24.31 











Milan Township, Coos County, N. H., 3 miles east of west Milan; altitude 1,300 feet; slope 5 per cent 

 north: soil fine, fresh, brown loam, very stony, medium depth, humus 2 inches deep; plot one-eighth acre 

 in strip of second-growth 2 chains wide at south end of an old hardwood stand; density 0.9; reproduction, 

 beech and sugar maple seedlings quite abundant, no birch; numerous maple seedlings killed by shade. 



Plot No. S.— Age, 88 years; yield, 38.6 cords per acre; height of dominant trees, 60 to 65 feet. 



Species. 



Propor- 

 tion 

 based on 

 volume. 



Number 

 of trees 

 per acre. 



Diameter breast- 

 high. 



• tremes. 



Average 

 Volume annual 

 per acre. I growth 



per acre. 



Yellow birch. 

 Paper birch. . 



Beech 



Sugar maple. 



Aspen 



Red spruce. . . 

 Balsam fir. .. 



Total. 



Per cent. 

 63.9 

 30.6 



4.5 

 .6 

 .4 



368 

 128 

 52 

 4 

 2 

 416 

 36 



Inches. 

 6.8 

 7.6 

 4.9 

 6.5 

 7.0 

 2.2 

 2.2 



Inches. 

 2 to 14 

 2 to 13 



1 to 10 



2 to 9 



Cubicfeet. 



2,097 



1,005 



147 



21 



13 



Ito 6 

 Ito 3 



100.0 



1,006 



3,283 



Cubic feet. 



23.83 



11.42 



1.67 



.24 



.15 



37.31 



Benton Township, Grafton County, N. H., near Glencliff; west slope of Mount Moosilauke: altitude 

 2,000 feet; slope 17 per cent; exposure northwest; soil fairly deep sandy loam with 3 to 4 inches of humus; 

 plot one-half acre, in stand running largely to paper birch; density 0.9; reproduction, red spruce, heavy, 

 of very slow, growth. 



New York. 



Plot No. 4. — Age, 20 years; yield, 10. S cords per acre; height of dominant trees, 35 to 40 feet. 



Species. 



Propor- 

 tion 

 based on 

 volume. 



Number 

 of trees 

 per acre. 



Diameter breast- 

 high. 



Average. 



Ex- 

 tremes. 



Volume 

 per acre. 



Average 

 annual 

 growth 



per acre. 



Yellow birch. 

 Black birch.. 

 Sugar maple.. 

 Fire cherry... 

 Red maple. . . 



Beech 



Service berry. 



Total.. 



Per cent. 

 56.2 

 15.0 

 14.2 

 11.1 

 3.5 



2,288 

 336 



320 

 32 



Inches. 

 2.1 

 2.4 

 2.4 

 3.4 

 2.7 

 1.0 

 1.6 



Inches. 

 1 to4 

 1104 



1 to 4 

 3 to 4 



2 to 3 



Cubicfeet. 



138 



l 1 

 102 

 32 



Cubic feet. 

 25.90 

 6.90 

 6.55 

 5.10 

 1.60 



1 to 2 



100.0 



3,392 



46.05 



r Township, Delaware County, N. Y.; altitude 1.300 feet; slope 10 per cent northwest; soil 

 very scant ; fresh, loamy sand with thin" humus layer, over large, flat, loose sandstone fragments; plot 

 one^eighth acre, in stand of 2 or 3 acres, varying in composition; density 0.9; reproduction ab • 



