336 
Barber. — Cupressinoxylon vec tense. 
Description of Specimens. 
Specimens t-2 inches in diameter, with distinct, central, 
or excentric pith. Rings of growth well marked, averaging 
1-2 mm. wide, composite, each with 2-6 bands of narrow 
dark summer elements. From the arrangement of the cells 
in the rings the specimens are considered to be young 
branches and roots. Pith well preserved, diameter in 
branches -9 mm., in roots *3 mm. to *4 mm., cells increasing 
in size towards the centre, 1 o /x to 50 /x in diameter, copiously 
pitted, with large triangular intercellular spaces 5-1 5 /x across. 
Medullary sheath : in the roots the rows of tracheides pass 
directly into the cells of the pith, in the branches they 
terminate in small groups of' cells irregularly arranged. 
Spring tracheides not differing much in branch and root, 
tangential width 12-25 M, radial 17-22 yuc ; summer tracheides, 
in the branches, radial diameter 10-ii/u, averaging 4-6 
rows, in the roots radial diameter 12/x, averaging 2-4 rows. 
Bordered pits in a single row (rarely double in roots), free 
and rounded in branches, often touching and compressed 
in roots, outer diameter 7-14 /x, inner 3—5 /ot. Tangential 
pits frequent, occurring in 2-7 rows of summer cells, outer 
diameter 5-7 /x, inner 2-3 ft . Medullary rays simple, usually 
one, occasionally two cells broad, 1-16 cells high, the average 
being 2-3. Cells of ray 15-20 /x high, 12-16 /x broad, radial 
length various, covering 2-6 tracheides. Proportion of 
medullary-ray-tissue to the rest of the wood about 1 : 30. 
Resin-tissue, consisting of isolated rows of parenchymatous 
cells, abundant, equally distributed. Length of cells various, 
tangential width 19-28 /x, radial 11-20 /x. 
It has not been found possible to place this wood under 
any species of Cupressinoxylon already described. The 
peculiarity of the rings of growth is probably in itself 
sufficient to establish a new species. Besides this, however, 
the youth of the specimens and the detailed examination 
to which they have been subjected, leave few points of 
comparison with known fossils. It will be better to defer 
