Notice on Vegetable Fossils. 271 
{in the first of the above named places, four or five stalks 
from twenty to 30 ri ger (abouteight or twelve inches) 
in diameter, which Mr. d’Aubuisson calls trunks of trees, 
are seen standing in a menr al position in the micaceous 
sand stone (psammite) of the coal ground. All the reat 
nying circumstances are similar to those which attend 
vertical stalks of St. Etienne.* 
Similar facts have been observed in the environs of Saar. 
e mae found i in the latter mine, , remarkable for their 
conic form, for their diameter from -five to 
centimeters (seventeen and hires-foutths so-fourtéen and a 
quarter inches) and for their length which exceeded three 
metres (ten feet) have been lately described, and elucidated 
by plates, by Dr. Noggerath. 
These trunks, which cannot be classed with any known 
vegetable, and which appeared to differ from those observ- 
ed at Hainchen and at St. Etienne, traversed several layers 
of psammite, as well sandy as schistose, and were situated 
between two beds of coal. 
- Mr. de Charpentier cites a similar instance which he ob- 
served in the psammite coal-ground situated north-west of 
Waldenburgh, in Lower Silesia. He says that in 1807 there 
was discovered in that mine a fossil tree, in a vertical posi- 
tion, traversing several strata, and having the forms of its 
roots and of some of its branchesin a good state of preserva- 
tion, while their nature was ch anged to a fine grained 
quartz of a greyish black, but the structure was not reco, 
zable: the bark and the small branches were changed to 
is trunk was four decimetres (fifteen ~ “am 
quarter inches) in diameter, and there remained of its 
about four metres (thirteen feet.){ The presence of the 
en ened der Minas, V. XXVIL page 48, sx more especially 
Cid Avsuissos, Geograv V 2, p. 292. 
t Ueber aufrecht in gebirgsgestein ingeschloffene fossil Baumstamme, &e. 
von Dr. Jacop NoGGERATH. Som; 1819. 
t Bibliotheque Universelle, 1818. V. IX. p. 256. 
