‘ 
Geological Travels in Hungary. 259 
ures, with their regular dip, gives them more the appear- 
anee of gray wacke, than I have any where else seen; for 
mica is rare in the slaty clay of most other coal measures. 
Our immense coal field above’ Pittsburg is 30 or 40 miles 
distant from Bedford, the termination of the transition forma- 
tion, which space is occupied by secondary limestone full 
of shells, and sandstone, on the back of which the coal crops 
out. 
M. Beudant found Gres houillier (coal measures) occupy 
ing the greatest part of the north and summit of the Carpa- 
thian mountains. I once went thirty or forty leagues from 
Villiczka, across the Carpathians, but saw nothing that 
l could’ call coal measures or Gres houillier, but immense 
beds of transition. Froma note in page 171 of the 3d vol- 
ume of M. Beudant’s elk: where he found the specimens 
of the advantages which the geologist enjoys in the nited 
States, in consequence of Hie, Fegalanity nd 
Stratification, is to be coavince : 
the ae afi et first glance, with their dip and direction, 
and to have no doubts concerning their actual and natu- 
ral relative positions. re 
. i of the secondary 
*When I go home I shall send to the Society speciné’s f nesd 
imestone, 1 fields above-mentioned, as well as specune 
ot thee Agpacuaen 9 are! all at Philadelphia, besides the suite of Italian 
rocks which I gave to the academy. 
