CAMBIUM DEVELOPMENT IN AMERICAN LARCH 
284 KNUDSON 
: =e TESTER BREE 
a = aa 
“pe Berle 
A 
te 
Hit eee 
Hames Petal 
i 
B, diame 
. 
» 
mae | a 
ac 
aim ee 
APRIL ID 
= 
2 
y 
A, diameter increase in trees A and . 
* vane 
re om ae 
oa 
Syaepns 
a aD inti 4 
HEHE 
DIAGRAM II. 
trees C and D. 
