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DR. D. H. SCOTT : NOTES ON CALAMOPITYS. 
stele. The primary wood is nearly continuous. x about 25. Section 40« (Coll. 
Solms 413). 
Fig. 14. Double xylem-strand from the same section as Phot, 12. pæ., pæ., the two proto- 
bo 
jos 
22. 
23. 
24. 
26. 
27. 
28. 
xylem-groups of the strand, which appears to be separated a little from the 
secondary wood above. x about 30. Section 97, Berlin. 
. Radial section through the pith of the same specimen, The longitudinal axis is 
horizontal. ¢.¢.¢.', tubes, probably medullary tracheides. x about 16, Section 
97R, Berlin (Coll. Solms 413). 
. Shows one of the tubes (¢.') in the pith, more magnified. X 38. 
. A vascular bundle and surrounding tissue from the leaf-base of the same specimen. 
There appear to be three protoxylem-groups (pz.). X 35. Section 97, Berlin. 
. General transverse section of another specimen, with a portion of leaf-base, 
containing two bundles (v.d.), on the left. Zt., leaf-trace strand shown in detail in 
Text-fig., p. 212. x 1$. Section 98, Berlin (Coll. Solms 411). 
. General transverse section of the Halle specimen, showing the dense wood, and, 
on the right, the small pith (p.). x 3$. Section 761, Halle (Coll. Solms 420). 
. Pith, with primary and part of secondary wood from the same section, more 
magnified. The primary wood is almost continuous and there appear to be 
medullary tracheides. p.., a protoxylem-group ; m.r., one of the uniseriate rays of 
the secondary wood. xX about 25, 
PLATE 8. 
Calamopitys Saturni. 
(From photographs by Mr. W. Tams.) 
. General transverse section, showing the small pith and primary wood, the broad 
secondary. wood with medullary rays dilated outwards, and the remains of the 
phloem (ph.). X 18. Section 76, Berlin (Coll. Solms 422). 
Pith and primary wood more magnified. The six distinct. xylem-strands round the 
pith and the leaf-trace are seen. pz.Lt, protoxylem of leaf-trace ; pz. proto- 
xylem of reparatory strand behind it. 2.,a xylem-strand which appears to be 
somewhat embedded in the pith. x about 50, 
Calamopitys fascicularis. 
Leaf-trace in a tangential section of the wood, showing the two widely separated 
protoxylem-groups, pz, pr. X 46. (Mr. W. Tams.) Section S. 2474. 
Calamopitys Beinertiana. 
Part of transverse section, showing a large mesarch xylem-strand leaving the 
pith and entering the secondary wood. pz., protoxylem of strand. x 93, From 
a section of Count Solms-Laubach's Falkenberg specimen. 
. From the same section, showing a xylem-strand lower down in its course, smaller, 
but still mesarch, px., its protoxylem. x about 65. 
Another xylem-strand, cut still lower down, very small and endarch. pz.,its 
protoxylem. X 65. 
The above photographs, 24-26, by Mr. L. A. Boodle, F.L.S. 
General transverse section of a Norham Bridge specimen. Numerous sclerotic 
nests in the large pith. /..-/.t., the three leaf-traces passing through the wood. 
X about 23. From a section (No. 1) lent by Dr. Gordon. 
Leaf-trace in a tangential section of the wood, from the same specimen. "There 
appears to be one median protoxylem. x about 48. From a section (No. 4) lent 
by Dr. Kidston, F.R.S. 
Phots. 27 & 28 by Mr. W. Tams. 
