

NOTES ON THE STRUCTURE OF THE WOOD OF FIVE SOUTHERN PINES. 



(Pimm }>alnstrii, lietcroplii/llu, rchiitata, to da, ylubra.) 



SAP AND HEARTWOOD. 

 ANNUAL RINGS. 

 SPRING AND SUMMER WOOD. 

 GRAIN OP THE WOOD. 

 MINUTE ANATOMY. 



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