Bailey . — A Cretaceous Pity oxy ton with Marginal Tracheides . 325 
DESCRIPTION OF PLATE XXVI. 
Illustrating Mr. Bailey’s paper on a Cretaceous Pilyoxylon. 
' Fig. 1. Pinus scitnatensiformis : transverse section of stem wood, x 60. 
' Fig. 2. The same : higher magnification, x 100. 
' Fig. 3. The same : tangential longitudinal section of stem wood. x 60. 
-Fig. 4. The same: higher magnification, x ioo. 
Fig. 5. Pinus Strobus : transverse section of the stem wood, x 300. 
* Fig. 6. Pinus scituatensifo 7 'mis : radial section of stem wood, x 500. 
Fig. 7. Pinus Taeda : radial section of root wood, x 300. 
’ Fig. 8. Pinus scituatensiformis : longitudinal section of the pith, x 60. 
• Fig. 9. The same : transverse section of the base of a short shoot. x 40. 
Fig. 10. Pinus Balfouriana: radial section of stem wood, x 500. 
Fig. 11. Pinus pahistris : radial section of stem wood, x 500. 
Fig. 12. Pinus Jiexilis : radial section of stem wood, x 300. 
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