| 
PLATE XXI 
¢ 7 Ee 
\\\, ae | 
Wwe 0 \ is 3 5 ot BE 
‘ B2 52 
\» 
p 
LIFE ZONES 
x 
N 
~~ a 
6 : tag" 
4 
ZZ Transition 
| AY 
— 
A\ 
—, 
80 
| tipi 
90 
f 
$b 
a 
vere) 
EZ ZAZA 
Ze : Wy LA 
2 
Ven 
AD AN 
A 
sw => \Wr2 SS \W 
AVAN 
<2 
ie) 
ay N SS \ 
Pp R\\ 
EXSY 
wwe — 
—— 
¢ 
80 
to 
Adapted with modifications from Plumb (1898) 
