634 Journal of Agricultural Research Vol. 34, No.7 
such as species, size, and position of each tree in the forest canopy, 
were recorded at each periodic examination. : 
To determine the effect of a reproduction cutting made in 1902, 
plots 321 and 323 were established in 1906 in a 45-year-old stand of 
second-crowth hardwoods on the Maltby tract. All the chestnut 
t, southern Con- 
ut is being replaced 
(Maltby tract, 
pening left by the chestnut has 
-killed chestn 
are interlaced 
The blight. 
The first three generations of chestnut sprouts 
e@ pine in mixture 
y infected. Theo 
pine in Sussex County, N. J. 
yellow poplar, the crowns of which 
is and pitch 
aining some young pitch pine and whit 
rtopped fourth generation is heavil 
, hickory, and 
B, a mixed stand of hardwood. 
, a young stand of hardwoods following clear cutting about 15 years before. 
by a dense growth of young hardwoods cont: 
A 
have been killed by the blight and the ove: 
been completely filled by red oak 
i 
necticut). 
Fic. 
on these plots was cut and salvaged in 1913. Plot 474 was laid out 
in 1910 in a 45-year-old stand on the Whittemore estate. A heavy 
thinning (“C” grade) was made the same year. In 1915 an im- 
provement cutting was made, taking out about 1 cord per acre. 
In this cutting, all of the dead and suppressed trees, most of the 
intermediate trees, and some of the codominant trees—those crowded 
