Tracks of Animals in Variegated Sandstone. 259 
are called, “ Schalsteinbanke ;” while at Pélzig they correspond to 
the under “ Werkbank,” and are called the upper “ Werkbank.” 
This sandstone formation at Pélzig, consists of thinner strata, is 
firmer, and more gray, on which account it is called, in the upper 
region, ‘“ Eisenstein ;” but I found no oolite there. 
On these sandstone strata, follows at both places, slate-clay, 
with one or two sandstone plates intermediate. At Porthen, how- 
ever, it is colored rather red, than greenish gray, and is there call- 
ed, “‘rother Schutt.” Upon this, rest the so called, “ Sandplat- 
ten,” thin, yellow sandstone strata) which extend over a much 
larger-region at Pérthen than at Pélzig. 
The slate-clay and sandstone, finally, which cover these sand 
plates, oceur only in some places in the highest parts of the quar- 
tes, and in general considerably contorted. 
The engraved plate is not to be regarded as geometrically exact, 
for the thickness of the layers is only conjectured, and it is in 
the main, a representative of several contiguous quarries, rather 
than an accurate copy from one, which appeared to me would be 
exact enough for the present object... 
I proceeded in a similar manner, with the copies of the foot- 
tracks: they are sketched, indeed, individually exact, according 
to their natural,size, being even measured with the compasses ; 
but their relative position is arbitrary, they being placed thicker 
than is usual on the slabs, as the most distinct reliefs of several 
individual slabs, are united in a small space. Besides, the form 
in these hasty outlines, may be more sharply marked out, than is 
teally the case in nature, in order to make up for the want of a 
practiced hand, which alone can represent any thing distinetly, 
and-yet true to nature. These sketches may give an idea of t 
thing, but a better account may be hoped for, from Professor 
Rossmiissler, for whom I have this day ordered a wagon-load of 
the large slabs to Freiberg. 
