110 J. S. Newberry on the so-called Land Plants of Ohio. 
ART. X.—On = so-cai Hed, Land Plants oe the Lower Silurian 
Ohio ; by J. S. NEWBE 
[Read before the National Academy of Sciences, at the meeting in April, 1874.] 
In the January number of this Journal, Mr. Leo Lesquereux 
describes two fossils, found in the upper portion of the Cincin- 
nati group, near Lebanon, Ohio, These he considers as the re- 
mains of land plants, and refers them to the genus Sigilaria ; 
and this _ is cited as Sy edt instance where plants so highly 
eo opt have bee with in Lower Silurian rocks. 
Through the fee ue of. dig Rev. H. Hertzer, to whom the 
specimens in question belong, they had been in my possession 
’s notice, 
ternal structure of these specimens, any satisfactory evidence 
that they represent land plants; still less that they form species 
of the genus Sigiliaria. ‘Their external markings are fairly rep- 
drical Gate é which the ex iatial cate is 5 very smooth, but 
is marked hy a reticulation not 
unlike that of one section of the 
genus Sigillaria. I did not dis- 
cover, however, any dots or tu- 
bercles in the center of the mesh- 
e 
were they present, might be sup- ms a 
posed to represent the place of 
the nutrient vessels of the leaves. Taken = itself I - should 
say that this specimen might be a sponge or some other low 
form ate marine life, quite as well as a Sigillaria, Since it is so 
forms so little of the original organism, I think it 
would te unsafe to make it the base of any foe and impor- 
tant conclusion. 
