474 MR. G. ERDTMAN: STUDIES IN THE 
PEAT Moss No. 16. 
TEXT-FIG. 15. 
0 10 20 30 40 50 60 70 80 90 100 % 
| 
| 
JA 
14 
24B 
34 
IC 
444 
—g— Alnus. —O-- Betula. —e-- Pinus una Ulmus. 
Quercus. ~~... -- Tilia. --m-- Corylus. 
