92 Mr. Weaver's Geological Remarks. [Auc. 
south-western side by the quadersandstone formation: in all 
other quarters, its line of contact with older rocks may be fol- 
lowed, from which it appears throughout to conform to their 
sinuosities, with a dip corresponding, Thus on the NW. itis 
generally inclined toward the SE. or 8.; on the NE. to the SW. 
but on the SE. occupying in that quarter three inlets, or bays 
as it were, the dip is successively directed to every point of the 
compass except the E. Again, on the SW. near Schlesisch 
Albendorf, on the confines of the quadersandstone, the dip is to 
the ENE. ; while beyond the quadersandstone on the SW. where 
the coal re-appears at Straussensee, the dip is NNE., a disposition 
probably arising from the adjacent primary tract. The general 
arrangement of the beds, therefore, indicates the form of a great 
trough, at least in the south-eastern quarter; but the internal 
structure of the field is rendered very intricate and complex 
from the interposition of isolated ranges and masses of porphyry 
and trap, which have a sensible influence on the stratification of 
the country. The map of the environs of Waldenburg, founded 
on actual survey, is an evidence of this fact. Similar indications 
appear in the south-eastern part of the tract, and hence the 
course of the coal and concomitant beds becomes frequently 
curve linear, dipping at angles varying from 80° to 16°. That 
the seams of coal are extremely numerous, and that there is an 
interstratification of the whole series of beds connected with the 
coal, may be fully inferred by combining the observations of Von 
Raumer with those of Von Buch. The latter states that if we 
traverse the outcrops of the strata from Furstenstein to Alben- 
dorf, we shall fall short rather than exceed the number, if we 
reckon the beds of the carboniferous series at 500; that is, . 
without including the innumerable beds that extend but a short 
way, edge out, and are lost among the others (Geog. Beob. vol.i. 
p- 101—103). The number of beds of limestone in the series 
appears not to be ascertained, for though limestone has been 
noticed in 22 places, several of these spots seem to be situated 
on the line of bearing of the same stratum. It would require 
laborious and expensive research before a correct map, with 
corresponding sections, of this coal tract could be constructed ; 
and the sections of Von Raumer can only be considered as illus- 
trative diagrams, tending to convey a general idea of the rela- 
tive position of the carboniferous series itself, without pretending 
to give a detailed view of its internal conformation. The red 
sandstone and porphyry adverted to, as if covering this coal dis- 
trict (“ Outlines,” p. 470), form in fact a part of the general 
series. | 
The structure of this tract seems very analogous to that of the 
Scotch great coal field. Many of its features correspond also 
with those of the coal tract of the Petersberg, on the banks of 
the Saale. 
The red sandstone formation situated to the north of the Rie 
