The Pines of Australia. 



Figure 176.— Transverse section through a branchlet and three decurrent 

 leaves, illustrating the sharp angle formed by the dorsal 

 ridge in this species in each leaf, and where the hypodcrmal 

 cells are seen to be well pronounced. The endodcrmal cells 

 are not numerous around tlie three oil cavities and median 

 tissue. On the underside of each oil cavity is a bundle, 

 Sclerenchymatous cells occur throughout the parenchyma. 

 Stained with haeraatoxylin. C. Drummondli. x 40. 



