184 Brongniart, Sur les Vegetaux Fossils. 
coides, Poacites, Phyllites, and the orders Carpolithes and 
Antholithes, beside nine species referable to existing Gen- 
The Palmacites are found only in this formation. . 
2. The formations of middie and inferior sediment, inclu- 
ding chalk, Jura limestone, oolite, alpine limestone, some 
lignites, and the bituminous schists of Mansfeid, contain 
specimens of only three Genera, Exogenites, Fucoides, and 
Lycopodites. 
3. The formations of coal, anthracite and copper lignite, 
contain specimens of Calamites, 5yringodendron, Sigillaria, 
Cla ia, Sagenaria, Stigmaria, Filicites, Sphenophyl- 
lites, Asterophyllites, and the true Lycopodites, which are 
all unknown in the more recent formations. The Filicites 
are far the most abundant; they almost give a character 
to the coal formations. Poacites are also found in these 
formations, more abundantly than in any other. The cop- 
per lignites contain only Calamites and Stigmarias similar to 
those in the coal formations. The anthracite formations 
only Calamites, Filicites, Asterophyllites, Sphenophyllites, 
and Poacites. The coal formations contain all the Genera 
in this division. 
periods, and became very abundant in the form of exoge- 
nites and phyllites in the more recent. 
The author thinks the coal beds were formed by plants, 
growing onthe spot,and not brought from another place and 
| there; while the more recent formations are partly 
formed of plants growing on the spot, as Fucoidesin marine 
formations, and Charas, Nympheas and Poacites, in fresh w2- 
