FONTAINE.] THE EMMONS COLLECTION. 295 
a number of well-preserved impressions of a fine plant that had not 
been described in his account of the North Carolina fossils. A care- 
ful examination of them, and of the cycads described by him, con- 
vinced me that these apparently new plants are the undistorted forms 
of the plant given in his fig. 83. Notwithstanding the fact that 
Emmons’s description and figure give an incorrect impression, I shall 
retain his name for the plant, as there is no convincing evidence that 
it is not a Podozamites, while the specific name longifolius is justified 
by the length of the fragments of leaves. These indicate that the 
entire leaves must have had great length. In the same work (p. 115, 
fig. 82) Emmons gives a description of a form which he calls Oycadites 
longifolius. His figure does not indicate the presence of a midrib, a 
fact mentioned by Emmons. He states that the midrib is indicated 
only by a longitudinal channel, because ‘‘the frond adheres to the 
rock by the back.” From this he does not seem to have distinctly 
seen a midrib. I have seen in the collection no cycad with a midrib 
like this figure, but some of the forms of Podozamites longifolius 
strongly resemble it. Moreover, in P. longtfolius, which has thick 
leaflets, there is often a deceptive appearance, which at first sight 
gives the impression of a midrib. Careful inspection, however, 
shows that it is due either to a wrinkle in the middle of the leaflets 
or to a film of carbonaceous matter that remains there. In both these 
species of Emmons the leaflets are represented as not narrowing much 
at their insertion on the midrib. That is due to the fact that both of 
the specimens figured present their lower surface uppermost, and the 
actual insertions are covered by the broad midrib. Specimens of 
Podozamites longifolius that present their lower face uppermost have 
the insertions of their leaflets disguised in this way. 
The following may be given as the description of Podozamites longi- 
folius: 
The texture was thick and apparently leather-like. The leaves 
probably attained the length of half a meter or more. The general 
facies of the leaf is much like that of Dioonites Buchianus, having 
the leaflets of the lower part of the ib so set on the midrib as to 
make an angle with it of 45° or ure. Toward the summit of the 
leaf the leaflets are inserted under more and more acute angles, while 
at the summit there is a terminal leaflet that is found in the direction 
of the prolongation of the midrib. Pl. XL gives a form that belongs 
to perhaps the middle of the leaf. It shows the true attitude of the 
leaflets only in the lower ones on the right-hand side, the others going 
off under too large an angle, owing to distortion from pressure. The 
midrib is strong and ridged. Portions were seen 6 to 7 mm. wide, but 
these were not the largest parts, as the petioles and basal portions are 
represented in none of the fossils. The texture of the leaflets was 
thick and leathery, so as to hide the nerves. These could not be seen 
