JACK PINE. 17 
he YEARS 
10 
2 a 
Hy Y 
~@ wl! 
8 vi ie, : 
aa iat RG 
iano see i 
ney Se 
Wx bs NS a fae Ws 
SAMUS, 7 Cae A ih 
mV YY ao \ a ay | i} 
Zs a: et st 7 \A wii. 
ze Wy Te ( i 
Mt My) 
= aN 
) 
Le ae | [ae 
A S Po RY 
8 nee ae Tel Wee 
Oa ea i ae 
\ 
TH) 
2 Yj a \\ H))\ SIAN ‘ 
\\ \\ a UL, Hx oT Be V7, OTe 
\\ \ 
AN re iN ul a AS 
ON as 
Me 
WSS 
aS 
ais 
Gu a 
ee : u Be HK 
Ne ake : : aS a K i y, 
Re, a iy Oe 
apa 0 (Ny, a aa 
ae a i 
ae ee e 
ae pe e ie a J, 
a oe . 
ee y 
St 7 Te di 
Cre; Serge sae 
SG SU gk M: 
OS pest ae MSY = Fuze 
Bore PRED: Se ree eo, 
2 Ft Tn ERE 
SMe Se 
Fic. 4.—Jack pine saplings 8 years old and 10 feet high. Paper tied around nodes indicates termination 
of esch successive year’s growth, and shows several whorls of lateral branches (usually 3) for each year, 
which is characteristic of this species. 
140205°—20—Bull. 820-——3 
