Review of Recent Geological Litetature. 55 
Plate V. 
Fig. I. Longitudinal section or plan of parallel rows of cells, gray, 
in color, embedded in clear black Pennsylvania anthracite. But in the 
neighborhood of a, a faint suggestion of organized cellular structure, 
nearly at right angles to the other, may be seen. 
Fig. 2. Plan of part of several other rows of the same structure as 
in figure i, and occuring on the same fractured surface of the same 
specimen of coal, at about one fourth of an inch to the left of the left 
hand end of figure i . 
Note. These organisms seem to be rare in the coal: they 
are the only specimens of the kind that the author has met 
with. Presumably they are of vegetable origin. 
Fig. 3. An approximately vertical section of part of a bright, near- 
ly black lamina in Pennsylvania anthracite, in dark gray coaly matrix. 
The specimen or fragment found, seems to be composed of some sixty 
separate bands or strands lying parallel with and practically in touch 
with one another. The point a, seems to be an edge or margin of the 
thing, the other end being broken off at b c. At d, something in the 
shape of an intruder appears and has created a deformity in the speci-- 
men at that place. Likewise a smaller disturbance appears near the 
middle of the figure. 
Figs. 4, 5 and 6 show the character of. the internal structure of the 
units as they are more or less distinctly revealed at or near to the several 
positions, e f and g respectively, Thus the specimen is apparently 
composed of but one kind of fibres or cells which are long rather than 
short, and towards the margins of the units become quite fine or hair- 
like in texture. 
Note. This fossil seems to be scarce in the anthracite of 
Pennsylvania. In specimensof anthracite from South Wales, 
the author has observed rather similar forms and organiza- 
tion. 
REVIEW OF RECENT GEOLOGICAL 
LITERATURE. 
Fossil Flora of the Lower Coal Measures of Missouri. By Da- 
vid White. Monograph XXXVII, U. S. Geol. Surv. 1899. 
In fullness of treatment, references, text and illustrations, and es- 
pecially in its stratigraphic application, this is the most important work 
on Paleozoic plants yet published in this country. The only publica- 
tion relating to American Paleozoic plants which can in any way be 
