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



(Pinits jialKstria, Urda, echitialti, licltriiplinlla, ijlahra,) 



Sap and IIeartwood. 

 Annual Ring.s. 

 Spring and Summer Wood. 

 Grain of the Wood. 

 Minute Anatomy. 



131 



s- '♦ 



