604 
ME. E. W. BINNEY ON SOME LOWEE-COAL-SEAM FOSSIL PLANTS. 
internal structure in every respect. The horizontal division, in fig. 1 may pro- 
bably owe its origin to a fissure in the stone rather than a division such as 
is usually seen in a Calamites, hut the outside longitudinal striae in all the spe- 
cimens remind us of that fossil plant, while the vascular bundles of the central 
axis of these specimens' bear considerable resemblance to some of the species 
of Medullosa: magnified 2\ diameters 
Fig. 4 (No. 7) represents the outside of the inner radiating cylinder of Stigmaria 
ficoi&es arranged in wedge-shaped bundles, showing the finely marked longi- 
tudinal striae with which it was furnished, but not affording any evidence of 
structure in the central axis : magnified 2\ diameters. This specimen is from 
the Wigan Five Feet seam of coal of the Ince Hall Coal and Cannel Company, 
in the middle division of the Lancashire coal-measures, and is the only speci- 
men which has come under my notice which shows the outside of the inner 
radiating cylinder : magnified 24 diameters. 
Fig. 5 (No. 8) represents a transverse section of a small specimen oi Sigillaria vascu- 
laris, found also in the lower coal-measures of North Owram, in the middle of 
the Hard bed of coal. It is in a more perfect condition, as a whole, than any 
of the other specimens described in this paper, and appears to be a younger 
individual of the same genus and species as the larger and more imperfect 
ones, Nos. 2 & 3, figured in Plates XXXI., XXXII., XXXIII., and XXXIV., 
associated with which it was found. It shows the central axis, composed of 
hexagonal vessels arranged without order, and having all their sides marked 
with horizontal striae, the internal cylinder of hexagonal vessels arranged in 
radiating series, and having all their sides marked with transverse striae and 
parted by medullary rays or vascular bundles, the space outside that cylinder 
occupied by lax cellular tissue traversed by vascular bundles, sections of some 
of which are seen as circular openings, a dark line bounding it, the zone of 
coarse cellular tissue outside that last named containing circular and oval 
openings, and passing into tubes or elongated utricles arranged in radiating 
series, and divided by large medullary rays or vascular bundles, forming the ex- 
ternal cylinder, and an outer bark enveloping the plant : magnified 4 diameters. 
Fig. 6 (No. 8) represents the outside view of the same specimen partly covered by a 
thick carbonaceous coating, probably representing the outer bark and partly 
decorticated, displaying rhomboidal scars, having a rib running through their 
major axis, in the middle of which is a cicatrix of a circular form left by the 
leaf. The scars and cicatrices upon them were arranged in quincuncial order. 
The specimen appears to be older than those described by me in the Geo- 
logical Journal previously alluded to, and younger than specimens 2 & 3 of 
this paper : magnified 2\ diameters. 
