82 ONE AORE CULTIVATED FOREST = EIGHT WILD. 
ain Broun adds that fresh undecomposed 
resin is a complete protection against this borer, and that its habitat is 
the Kauri forest, only stray individuals being seen away from it. 
Another borer, Dryoptherus bi-tuberculatus, completely riddles the dead 
sapwood, which it attacks whether the bark is on or off the tree. 
shortly after it is felled. Capt 
A Reat GRowWTH-STOPPAGE IN WINTER. 
This, however, 18 worth noticing. The rings of growth on New Zea- 
land Fuchsia (Fuchsia excortiea) indicate indirectly the reality of the 
growth-stoppage in the dead season, and the importance of felling timber 
then. Fuchsia, in middle latitudes of New Zealand, is practically quite 
leafless during winter, but its annual rings of growth are no more 
distinct than the ordinary evergreen trees which do not shed their 
leaves. We know that there can be no active growth on such trees as 
Fuchsia and Lacebark, which during the New Zealand winter are as 
leafless as Northern Hemisphere ‘‘ leaf-wood ”’ trees. It follows that if 
Fuchsia has rings less distinct than the ordinary evergreen trees of New 
Zealand, these are making no more winter growth than the leafless 
Fuchsia; ‘so that there is a really dormant season even for the evergreen 
forest-tree of New Zealand. 
Low Svrock rx Wiup Foresrs: AUCKLAND'S FUTURE KAURI. 
In the present wild forests the ‘‘stand’’ (bulk of milling-timber per 
acre) averages very low, if one considers Kauri alone, though it 1s con- 
siderably better than the average of Teak in the Teak forests of India. * It 
remains now to improve the Kauri forest by silvicultural methods, as the 
Indian Teak forests have been gradually improved during the last fifty 
years. Kirk, in his ‘‘ Forest Flora,’’ estimates the stand of Kauri as 
varying from 250 to 6,000 c. ft. He says, ‘‘ For good Kauri forest 
20,000 sup. ft. per acre would be a low estimate.’’ Let us say, then, 
2.000 c«. ft. of milled timber as a fair estimate for good Kauri forest, 
or 2,700 c. ft. log-measurement, adding one-third for sawing loss 
and the wasteful working methods of 1888, when Kirk wrote. If we as- 
sume 200 years as the average cutting-age of Kauri (and it is less rather 
than more, taking the ordinary size of Kauri logs) one has 2,700 c. ft. + 
200 years = 18°5 c. ft. as the acrim (mean yearly growth in cubic feet 
per acre), This figure works out so low for two reasons: (1) It refers 
to a wild and only partially stocked forest; (2) the trees are about 
double the age and size of their economic maturity. 
Cultivated Kaurt Forest Eight Tames the Wild.—Thus, taking these 
figures, the cultivated forest with an acrim of at least 100 would be 
some eight times as productive. Or, in other words, cultivated forest of 
but moderate capacity on one-eighth of the area of the old virgin forest 
would bring back the Kauri timber industry to what it was at its best. 
The Auckland timber industry may have not yet seen its best days, 
nor the Kauri-gum industry its most lucrative ones ! 
Auckland has probably never had more than some 2,000,000 acres of 
Kauri forest to draw on (p. 6), and has wasted more than half the 
timber in the working. Thus the half-million acres of cultivated Kauri 
forest discussed at page 4 would give Auckland and the Kauri-timber 
industry some four times the supply in perpetuity that it had t rily 
in the best of the old days. cr ae y that it had temporart)) 
