2 
Journal of Agricultural Research 
Vol. XI, No. x 
transects 2 % chains apart. The striking point brought out by the study 
was the very limited distance to which seed was being carried by the 
Fig. x.—Migration chart: Graphic representation of the number of seedlings per acre in each chain distance 
from seed trees. T. 57 N., R. 5 W. t Boise M. f sec. 26. Kaniksu National Forest. Scale, 16 inches=»i 
mile. W. P.-* white pine; C.=cedar; H.—hemlock; L.=* larch; D. F.=»Douglas fir. 
wind. The distance of seeding and the effect of the slash fire are shown 
in Table I. 
Table I. — Average number of seedlings per acre at various distances from seed trees on 
burned and unburned slash 
Species. 
Burned slash. 
Unbumed 
slash. 
First 
chain. 
Second 
chain. 
Third 
chain. 
All areas 
beyond 
3 chains. 
Distances 
of 3 or more 
chains. 
Western white pine. 
6l $ 
187 
40 
274 
Western red cedar. 
5,600 
266 
24 
16 
924 
Western hemlock. 
1,438 
195 
20 
16 
854 
