Yellow Birch and the Adirondack Forest 
TABLE VII 
TOTALS BY ZONES ON SAME AREA FoR Two SpPEcIES ONLY (AVERAGE OF 12.2 
ACRES ) 
LOWER ZONE 
MIDDLE ZONE | 
Sugar 
maple 
Average number per acre..... 
UPPER ZONE 
| 
ao Ene |) Sugar 
Birch maple | Birch minaple 
—s E-. s SER See 
| | 
1385.3 | 100.0 | 100.9 | 338.7 
TABLE VIII 
HEIGHT or TREES ON SAMPLE PLOTS AND AVERAGE 
SAMPLE PLots on 12.2 Acres NEAR WANAKENA, 
* DIAMETER TAKEN FROM 
Nays. 
Hardwood Type 
Sprcres D5 E- se inches Height in feet 
Yellow birch OF8 TG: 
Sugar maple... 0.67 10.8 
Na peapie bed 0.85 L1.0 
(ECD . 22! She Ret ENGR DIC an aan en teen a ee 0.8 10.1 
RELARMLOHESIAE Sac ch ctavatatet coavet alee .ayeve wale 1.45 *Not taken 
STC H CEO ets Sid's sis cle apaels as, ea)aue)e ce 1.0 14.0 
* Not regarded as of sufficient economic value for consideration. 
In Connection with Table VITT: 
The total height growth of red spruce during the eleven years 
preceding the study was 5.16 feet. During the first four years 
the growth shows little acceleration over that of virgin forest 
conditions, but after that time a rapid recovery was made. The 
mean annual growth in height for the last four years was 0.83 
of a foot which shows some inclination to lessen, due probably 
to shade of the hardwoods. The measurements were made on 
trees 1 to 10 feet high at-the time of cutting. 
Spruce Flat: 
A typical area was selected and permanent sample plot estab- 
lished to show the history of this type under this condition. 
‘The area was logged eleven years previous to the time of the 
study, ‘This acre will be remeasured at periedic year intervals, 
