New Coal Plants in Coal. — Gresley. 53 
Figs. 4, 5, and 6. Are approximately vertical sections, about at 
right angles to the planes of the laminae of the coal, of fragments of 
different specimens of what seem to represent the same genus or spe- 
cies of a hitherto ? undescribed coal-forming plant: and one that is 
not at all uncommon in Pennsylvania anthracite. These forms consti- 
tute some of the brilliant black laminations pervading, or having a 
wandering-about aspect in the duller and grayish groundmass of this 
coal. Though for the most part consisting of very dense black and 
apparently structureless material, yet, when carefully split as nearly 
parallel with the bedding-planes as possible and then viewed under 
favorable illumination, suitable specimens will reveal a beautiful cellu- 
lar to fibro-cellular organization. 
Fig. 7. The aspect of the cellular structures composing the exterior 
portions and lobe-like expansions of the specimens. 
Fig. 8. Longitudinal section of the cellular structure shown in 
figure 7. 
Fig. 9. Oblique view of the cellular material composing the grayer 
central portion of the specimen, figure 4. These vessels or fibres are 
of smaller diameter than those of the more marginal parts of the 
fossil. 
Fig. 10. Oblique section of the structural material of the fossil as 
observed part way between the structure figures 7 and 8 and that in 
figure 9, '• 
Notes on the above. These forms, whatever they may be, 
are much broader than they are thick. Their leaf-like and 
lobe-like, irregular surface (as proved by very numerous spe- 
cimens exhibiting a great variety of differences in form and 
shape, according to form and direction of fractures made in 
order to examine the specimens), are decidedly indicative of a 
meandering form of plant, and possibly one possessing a uni- 
cellular structure, since, all the organized tissues seen lie 
parallel to each other and seem to grade one into another. To 
the author's mind there is something so natural about the as- 
pect of the leafy externals of these forms, curving, curling and 
meandering about in the gray matrix of the coal as they seem 
to have been doing when converted into their original coaly 
state, (not anthracite, of course), as to suggest that the plant is 
in place of growth and that it grew horizontally. 
Plate IV. 
Fig. I. Vertical section of a fragment of some plant, occurring in 
the form of a blackish lamina in the paler matrix of Pennsylvania 
anthracite. This specimen is forked or shows two lobes along its left 
