The Pines of Australia. 



Figure 195. — Transverse section through branchlet and middle of oil 

 cavity in each dccurrent, adnate leaf. Hypodermal cells 

 are only below the dorsal ridge (assimilatory surface) ; the 

 ' transpiratory surfaces arc on the middle of the sides of the 



triangle. Stained with hfematoxylin. C Maclcayana, 

 X 70. 



Figure 196.^ — Transverse section tlirough a branchlet and surrounding 

 leaf ti'isue. A band of sclsrencliymatous cells (light brown) 

 surround the phloem of the median bundles. Transfusion 

 cells arc seen more clearly towards the top, and denoted 

 by the pitted cells. The lower portions of two oil glands 

 are seen on the left and right towards the top. Stained 

 with hematoxylin and safranin. C. Macleayana, x 280. 



