genus Noggerathia to Living Plants. 107 
Cycadee, especially Cycas revoluta; 3. Seeds, having the most 
striking resemblance to those of Cycas. It is difficult to avoid 
drawing the conclusion that these three kids of organs belong 
to one plant, and that this plant should be placed very near the 
Cycadee, probably even in the same family, in which it would form 
one of the most remarkable genera from the large size and form 
of its leaves,—a genus which would appear to combine leaves 
analogous to those of Zamia with a mode of fructification similar 
to that of Cycas. I should add, that this association, which ap- 
peared to me so striking in the mines at Bessége, from the 
abundance of these fossils, appears to exist in several other 
mines where these fossils are more rare. Thus in those of Trewil 
at St. Etienne we also find large leaves of a species of Noggera- 
thia, probably different from that of Bessége, associated with 
fronds having pinnatifid fringed lobes, which are however not 
recurved as those in the former locality, and having analogous 
fruits to those above described, although slightly different speci- 
fically. In Decazeville we find the same association, although 
combined with some specific differences and smaller dimensions 
in all the parts. I possess leaves of a peculiar species of Nog- 
gerathia obtained by M. Boisse from Carmeaux, in the fragments 
of which I can now recognise lobes of these abortive fronds very 
analogous to those of St. Etienne; finally, two kinds of seeds 
having considerable analogy with those which I have attributed 
to Noggerathia, although very different in their proportions. 
Leaves of Noggerathia, although from different species, are also 
very abundant at Blanzy, in the basin at Autun, at Brassac, 
Commentry, Saint-Gervais, Neffiez, Saint-Georges-sur-Loire, 
Saint-Pierre-la-Cour and Anzin. 
Most of the straight, linear or slightly cuneiform leaves, having 
equal and parallel nerves, and called Poacites, appear to be leaflets 
or lobes of the leaflets of Noggerathia; however, these leaflets 
having almost always been found only isolated, and also in very 
imperfect fragments, we must not generalize too much on their 
relations with Noggerathia ; probably several belong to another 
genus of the same division of the vegetable kmgdom, Flabellaria 
of M. de Sternberg, also referred by this savant to the family of 
Palms, and the affinities of which, both to the Conifere and to 
the Cycadee, have been shown by M. Corda; but here the leaves 
are simple and symmetrical, whilst in Noggerathia the foliaceous 
parts consist of the leaflets of a pmnate leaf, and they are gene- 
rally oblique at the summit and not symmetrical. 
This determination of the position of Noggerathia in the vege- 
table kingdom is not without some interest, for these plants ap- 
pear very numerous and widely diffused m the coal-formation, 
and the debris of their leaves appears m some places, by their 
