Scott .— The Structure of Mesoxylon multirame. 
EXPLANATION OF PLATES XI-XIV. 
Illustrating Dr. Scott’s paper on the Structure of Mesoxylon multirame . 
The photographic figures require to be examined with a lens. 
PLATE XI. 
Photographs by Mr. W. Tams. 
Figs. 1-6. Type. 
Fig. i. General transverse section of stem. An axillary stele is seen on the left, x zb 
S. 2338. 
Fig. 2. Half of a transverse section of stem, showing three axillary shoots, one above (see 
Fig. 22), one to the right, and one to the left, the two latter still connected with the cortex, x slightly 
over 3±. S. 2335. 
Fig. 3. Part of transverse section, showing a divided leaf-trace in cortex, the whole thickness of 
which is shown, as well as the phloem and wood; the axillary stele is passing through the wood, 
x 13. S. 2342. 
Fig. 4. Double leaf-trace (No. 14) in pericycle. x about 30. S. 2337. 
Fig. 5. Transverse section of pith, wood, and phloem, showing a double leaf-trace in a pith- 
bay. The centripetal xylem of the two strands is clear, x about 30. S. 2341. 
Fig. 6. Tangential section, passing through three leaf-bases, with the Dictyoxylm cortex 
between them. In each leaf-base the bundles of the trace are seen. a.s. axillary stele, cut obliquely, 
x zb S. 2344. 
Figs. 7, 8. Second Specimen. 
Fig. 7. Transverse section of whole thickness of phloem, with part of wood. On the right the 
large sacs of the pericycle are seen, x 30. S. 2769. 
Fig. 8. Part of phloem more magnified, showing resiniferous (?) tubes, sieve-tubes, and 
parenchyma, and phloem-rays, with pericyclic sacs to right, x about 75. S. 2769. 
PLATE XII. 
Photographs by Mr. W. Tams. 
Second Specimen. 
Fig. 9. Transverse section of outer part of phloem (to left), pericycle, and part of periderm. 
The large, ftiore Or less obliterated, sacs of the pericycle are evident, x about 75. S. 2769. 
Fig. 10. Radial section of the whole thickness of the phloem, with part of wood to left. On the 
extreme right pericyclic sacs are seen, x about 30. S. 2778. 
Fig. 11. Radial section of part of phloem, more magnified. Here the pericycle is to the left, 
s. resiniferous (?) sacs; p. phloem-parenchyma; s.t. sieve-tubes; r. phloem-ray. x about 75. 
S. 277s. 
Fig. 12. Tangential section through the middle of the wood, showing an axillary stele 
beginning to divide into two. x about 18. S. 2775. 
Fig. 13. Approximately tangential section through the inner part of the wood, showing an 
axillary stele completely divided into two. x about 15. S. 2776. 
Fig. 14. Transverse section, showing an undivided axillary stele (belonging to trace 12) 
passing horizontally through the wood, and abutting on a pith-bay. x about 25. S. 2760. 
Fig. 15. General transverse sections, showing leaf-traces, numbered 1-13, from within outwards 
(not in order of phyllotaxis, as some are missing). 9, double trace passing through wood ; 10, pith- 
bay with median strand; 11, 12, 13, axillary steles entering through wood. Outside No. 11 the 
bundles of the subtending trace are seen in the cortex. x slightly over 3. S. 2760. 
