ME. E. W. BINNEY ON SOME LOWEK-COAL-SEAM FOSSIL PLANTS. 
603 
PLATE XXXIV. 
Sigillaria vascularis. 
Fig. 1. Specimen (No. 3) of a stem of Sigillaria vascularis in a calcified state, found also 
in the lower coal-measures of North Owram in the middle of the Hard bed of 
coal, in company with the last specimen described, showing a portion of the 
central axis divided and partly disarranged, portions of the internal cylinder 
composed of hexagonal vessels having all them sides marked with transverse 
striae, arranged in radiating series parted by medullary rays or vascular bundles ; 
also a part of the space on the outside of the internal cylinder, composed of 
coarse cellular tissue, and parts of the external cylinder, composed of tubes or 
elongated utricles arranged in radiating series, and parted by large vascular 
bundles surrounded by coarse muriform tissue communicating with the leaves. 
The outside of the specimen presented the same kind of ribs and furrows, 
with indistinct traces of cicatrices, as the specimen No. 2, described in Plates 
XXXI., XXXII., and XXXIII. It is given chiefly for the purpose of 
showing the tubes or elongated utricles of the external cylinder, traversed 
by the large vascular bundles of an oval form, surrounded by coarse muriform 
tissue which are much more distinctly represented than in the first-named spe- 
cimen No. 2 : magnified 2 diameters. 
Fig. 2. A tangential section of the same specimen, showing a portion of the outer cylinder, 
composed of tubes or elongated utricles, d d, traversed by large vascular bundles 
of the shape of a double cone, composed of very large horizontally-divided 
tissue, d 1 , and more finely divided tissue, d" d", and having an oval-shaped vas- 
cular bundle in the middle, most probably communicating with the cicatrices 
to which the leaves were attached on the outside of the plant : magnified 20 
diameters. 
Fig. 3. A longitudinal section of the same specimen, showing a portion of the outer 
cylinder, composed of tubes or elongated utricles, d, arranged in radiating series, 
as well as a portion of a vascular bundle with the fine tissue divided by hori- 
zontal partitions, d" : magnified 20 diameters. 
PLATE XXXV. 
Sigillaria vascularis. 
Figs. 1, 2, & 3 (Nos. 4, 5, & 6) represent the external appearance of the central axes of 
three different specimens of Sigillaria vascularis , found in the middle of the 
Hard seam of coal in company with the specimens Nos. 2 & 3 described in 
Plates XXXI., XXXII., XXXIII., and XXXIV. They were enclosed in 
three stems, exactly resembling those specimens in external characters and 
mdccclxv. 5 N 
