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r ty o r fifty years
Oft
n fo
r into the
ally
ove
period
the
r extent
or smalle
fifty years
pictur
of unevenness which i s p
r ows on until t h e n
wood g
r ations
ope
extended to the youngest
r st instance
the fi
r ing regene r ati
u
r tificial h e
and a
giv
n
group syst
system
m
ntioned above
ing to
gr o wth receiv
r o t
f
lly p
ct
helter
o od compa
system t
at the t
T
H
L
R
wood con sists of a series of groups
r anging in age from one to thirty
r ding to ci r cumstances
acco
commenced in
p
n all se
p
wh
m is f
un
v
n age of
h top and side shelte
s bot
d again st f
r tment system
r
es withsta
O OD
RO UP
h ich the
dur
ng w
h e
wood
t
r es
r ved throughout lif
xt regen
ration comes round
oldest groups and g
similar to the procedure followed in
s
N
d years a
r y or desi r able
r
necessa
r equently co mbined with t h e st r ip
several groups
r ost and drought than und
It is also claimed for
r ms and d a mage by snow
d sto
T
Y
M
wood is gradu
r eg
of
and it pr
l R
r e taken
dvantage of
the young
hence
it is mo
H
n
ration
r
of g
ater
forty
or
sents a
The
when
r adually
is al so
r
r the
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