Canadian FoTestr]) Journal, November, 1919 



461 



Learning How Pine Tree Crops Can Be Ensured 



The accompanying photographs illustrate the methods of developing "sample plots" 

 on the Petawawa Forest Reserve under direction of the Dominion Forestry Branch. 



As described in recent issues of the Canadian Forestry Journal, the purpose of these 

 plots is to investigate the natural reproduction of white pine and red pine chiefly and to 

 ascertain the effects of various sylvicultural methods on the production of wood incre- 

 ment. The studies have great economic value, particularly to the pine lumbering industry 

 of Eastern Canada. 



A sample plot at Petawawu before being: thinnert out. 



A sample I'uresl plot In loiv iL. _ ,:-r. ss lias beni earrieil oiil. TIk' i r, 



bti-ii elvaiKcl ..I' their clea<l l>raiieh<'S. 



