yap UTILIZATION OF CALIFORNIA EUCALYPTS. 
tudinally during the drying, whether dried in the open air or in the 
kiln, but sticks of the same size which were cut at a distance of 
several inches from the heart showed no more inclination to split 
and check than did the sticks 2 inches square. Wood from the more 
mature trees gave better results in seasoning than that from the 
younger trees. Judging from the results of seasoning the test speci- 
mens, the same general rules should be followed in seasoning the 
eucalypts as in the case of the oaks and hickories. The early sea- 
soning of green-sawed lumber especially should proceed slowly and 
evenly. 
Fic. 4.—Unpeeled blue-gum pole cut March 26, after four months air seasoning. Sutro Forest, 
San Francisco, Cal, 
In the most satisfactory seasoning of eucalyptus lumber so far 
accomplished, open piling under cover with uniform and close stick- 
ing has been practiced, together with high piling to produce weight. 
In some cases weights are placed on top of the piles to prevent warp- 
ing and twisting during seasoning. When air seasoning alone is 
employed, three years’ time is considered necessary for the most 
satisfactory results, although material seasoned for two years is 
used for less particular purposes. 
Based partly upon Australian practice, a series of seasoning experi- 
ments has been started by the Forest Service to determine the best 
[Cir. 179] 
