Sporocarps in Erian Shale of Columbus. 139 
Salvinia natans, though indicating a plant of similar general 
type. Ihave stated in my previous paper the probability 
that such sporocarps would be found, and their discovery 
is therefore very satisfactory. 
2.—Sporocarpon furcatum. 
The smaller and probably immature specimens of this 
organism are obovate and broadly truncate below, with a 
slight emargination at the apex. Larger and probably 
mature specimens have a very deep slit at the apex, or 
divide so as to give a bifurcate appearance. Length of one 
of the larger specimens, 5.5 millimeters; breadth, near the 
apex, 2 m.m.; at base, 1 m.m. Surface with fine cellular 
reticulation, which, when seen as a transparent object, 
appears as a network of thick-walled cells, rather finer than 
that in the previous species, but of the same general char- 
, acter. Toward the base. it becomes more lax, as if verging 
into an ordinary epidermal tissue. No contained spores or 
macrospores were observed; but it can be seen that the 
specimens are not mere fronds, but have a double wall and 
are really flattened sacs. 
FIG. 1. SPOROCARPON FURCATUM. 
(a) Natural size. (4) Young specimen (mag.). (c) Full grown specimen (mag.), 
showing cellular areolation. (d) Cellular structure, highly magnified. 
These objects are, therefore, to be regarded as sporocarps 
or spore-cases of some unknown plant, saccate in form, and 
