the plotted point may ordinarily be used as the 10-foot site 

 index of the stand examined, although the index can of course be 

 interpolated to the nearest foot. 



(8) If possible obtain a similar figure (interpolated to nearest 

 foot) for several stands on the site to be identified, and assume 

 that the average of these measurements is the correct site index. 



A less accurate method of site determination is the selection of 

 about a dozen trees covering the diameter range of the dominant 

 trees in the stand whose site is being investigated, upon which 

 computations are based as with the dominant trees in the plot 

 method. No satisfactory method is yet known for identifying 

 site from trees in a virgin forest or scattered individuals on cut- 

 over land. 



If the stands examined for site determination are mixtures 

 (less than SO per cent one species , each species must be treated 

 separately. 



