24 BULLETIN 426, U. S. DEPARTMENT OF AGRICULTURE. 
The range of stumpage rates secured for sugar pine in sales of 
National Forest timber in California made durimg recent years is as 
follows: 
Maximum.| Average. | Minimum. 
Non Coasiphancesan di Siernnase cs 22) 2p seni 2 epee eae $3. 50 $3. 40 $2. 75 
CembraliSicmas=smecet a eke poe as S408 OL ee eee aes Oe 3. 50 PATS, 2.50 
NPOULNEEMNOIETTAS eee eee a ee eS ae ge ee oe 3. 50 3. 00 Ze 73 
Within the California National Forests extensive bodies of timber 
containing sugar pine are now being offered for sale, and complete in- 
formation regarding these tracts can be secured from the district 
forester at San Francisco, Cal. Operators in National Forest timber 
are not required to make large advance payments; and the stumpage 
is not taxed, although the State derives a direct compensating revenue 
from ali sales, through the United States Treasury. Operations in this 
class of stumpage are somewhat more expensive than on private lands 
because from 10 to 35 per cent of the younger timber is left on the 
area, and the pilmg and burning of refuse is required as well as the 
cutting of unmerchantable trees which are a fire or disease menace. 
These costs are taken into account in the appraisal, however, and are 
borne by the stumpage and not by the operator. 
GROWTH AND YIELD. 
HEIGHT GROWTH. 
One of the most remarkable characteristics of sugar pine is its 
ability to sustain a rapid rate of growth up to a very advanced age. 
Its rate of growth 1 in height is- comparatively slow; up to about 100 
years of age it is less than that of yellow pmne- At ae point it forges 
ahead and maintains its lead. In the most favorable situations, dur- 
ing its first century of life, sugar pine makes an average annual height 
growth of about 1 foot; during its second century, about 0.6 foot; 
and during its third century, about 0.4 foot. 
Foresters are interested principally in the rate of growth m the 
second-growth stands rather than in virgin stands, since this indicates 
the possibilities of the species under management. In the case of 
sugar pme it is very difficult to find representative second-growth 
stands, because there are but few sufficiently old cuttings and because 
sugar pine second-growth never occurs in dense young stands as 
yellow pine does, but always in open, mixed stands where growth is 
not forced so strongly by competition for ight. Table 15 was pre- 
pared from analyses of 29 rapid growing, young, second-growth sugar 
pines. The contrasting yellow pine measurements were taken in 
thrifty, dense, second-growth stands in Nevada County, Cal. 
