The Pines of Australia. 



Figure 12. — Transverse section through the upper portion of a very 

 young cone, showing the alternately large and small valves, 

 and mode of lateral attachment. Oil cavities are seen on 

 both dorsal and ventral surfaces. The darker patches in 

 the tissue are vascular bundles. The four irregular isolated 

 bodies in the central cavities are sections of individual 

 zygotes. Stained with hjematoxylon. C. calcarata, x 20. 



