402 



Forestry Quarterly. 



the estimated average height of the trees and the total sum of 

 the sectional areas at breast height of all trees in the stand. 



An experienced estimator working on felled trees or using the 

 form point method will before very long have gained experience 

 enough to judge the form class by eye, but he should not omit 



SAMPLE PAGE 



FROM THE 



VOLUME TABLE PUBLISHED BY TOR JONSON 



S«ctu>ff\*l are* vt t»r*a«t he'^h-t 



to check his figures by taking measurements on windfalls or 

 felled trees, when opportunity therefor is given. 



Mr. Jonson has also published an abstract from this volume 

 table- This table, which is mounted on cardboard, contains only 

 five form classes and is specially adapted for ordinary use in the 

 forest. 



To explain how Mr. Jonson reached the conclusions on which 



