266 OUR FORESTS AND WOODLANDS 
properly adjusted and distributed regularly 
over equally productive areas coming succes- 
sively to each year’s fall would be 
7000 (cb. ft.) x 80 (years) 
Io (acres) x - 
= 2,800,000 cubic feet, while in the latter case 
it would be 
8500 (cb. ft.) x 100 (years) 
2 
= 3,400,000 cubic feet. These figures may 
perhaps suggest that the eighty years’ rota- 
tion would probably be the more profitable, 
8 (acres) x 
involving, as it does, so much less capital in 
timber; but, in the woods worked with the 
longer rotation, the timber would be of larger 
dimensions and higher market value. More- 
over, a certain portion of the timber included 
in the mature fall at eighty years of age will 
likely be cut as thinnings, between eighty and 
one hundred years, in the longer rotation; and 
this must of course be taken into account when 
trying to determine which rotation is the more 
profitable way of utilising the land. From 
this it can also be noted how misleading it 
may be in Forestry, as in other matters, to 
jump to conclusions on mere prima facie ap- 
