TESTS OF ROCKY MOUNTAIN WOODS FOR TELEPHONE POLES. 23 
In figure 7 the weight-strength relations are plotted for bending 
tests on small specimens cut from the tested lodgepole pine poles 
and for similar specimens taken from other material grown in Colorado 
and Wyoming, cut green and air seasoned. It will be seen that fire- 
killed lodgepole pine is equal in strength to the Colorado and Wyo- 
ming material cut green and air seasoned, and that the Montana 
material gave higher strength values because it was exceptionally 
heavy and much above the normal for Colorado-grown timber of 
which the fire-killed poles were representative. The soundness of 
Fig. 7.— Weight-strength relations for clear, dry lodgepole pine. 
the sticks cut from the fire-killed material also indicates that such 
timber has no inherent defect due to having been killed by fire. It 
seems more reasonable to regard it simply as seasoned wood, and to 
assume that deterioration due to age or exposure, if present, would 
be indicated by the same signs of decay that are apparent in any 
unsound material. 
The relation between the stresses shown by the individual poles 
and those shown by the minor tests on the material cut from them 
is presented in figure 8. It should be remembered that the moisture 
content of the small specimens was only 8 per cent, as compared 
with an average of about 16 per cent for the poles. The green-cut 
