78 INDEX TO THE PLATES. 



PLATE III. Lennel Braes' Tree, Pitus antiqua. 



Transverse section diminished one half. 

 /,/,/■ Layer of carbonaceous matter. 



b, Centre. 



a, a, a. Portions retaining organic tissue. 



c, c, c. Portions of the same nature as a, a, a. 



d, d, d. Disorganized mass. 



e, e. Indurated argillaceous matter. 



PLATE IV. Fossil Vegetables of Lennel Braes and Craigleith. 



Lennel Braes Tree, Pitus antiqua. 



Fig. 1. Transverse section of a fragment: a, a, organic portions. Natural size. 



2. One of the organic portions. Natural size. 



3. Part of one of the organic portions. Transverse section. 35. 



4. Portion of the same. 55. 



5. Portion of inorganic part. 35. 



6. Part of transverse section. 100. 



7. Part of transverse section. 100. 



Craigleith Tree o/1826, Pitus Withami. 



8. Transverse section. 45. 



9. Transverse section. 45. 



10. Transverse section. 55. 



11. and 12. Portions of the same. 45. 



