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Mr. Weaver on the 
of an Isabella or reddish yellow colour, and evidently the surface 
of the rock, in a decomposing tender state, and apparently connected 
with the transition rocks in the interior, which serve as a founda- 
tion to the floetz deposition. In the series of limestone beds, 
which I have just described, I have met with riiadreporites, entro- 
chites, belemnites, and bivalves. 
These beds of limestone and conglomerate, in ascending toward 
the south, have suffered abruption ; but, a little further south, 
similar beds are found declining 10° toward the south, which are 
abrupted on the northern edge ; whence they would appear to 
have made a part at one time of the preceding beds, which, if con- 
tinued uninterruptedly, would form an arched curve in the line of 
their conjunction. 
Farther south again, are continuous strata of limestone full of 
petrifactions, surmounted by a bed of coarse clay slate conglome- 
rate, the whole dipping 25° toward the north-east. Some of the 
succeeding beds, as we descend, consist of a conglomerate, with a 
limestone base, containing pebbles of other limestone. Farther 
south, beds of blackish grey limestone and of conglomerate, two 
and three feet thick, are interstratified with slate clay three and 
four inches thick, dipping likewise toward the north-east : the beds 
of this conglomerate consisting of a confused intermixture of grey- 
wacke slate and limestone as a base, enveloping boulders, pebbles, 
and fragments of limestone, quartz, and greywacke slate ; and 
through the mass are scattered portions of calcareous spar, as also 
entrochites and other petrifactions. These ingredients are occa- 
sionally so numerous that the stone appears at first sight like a 
coarse sandstone. 
Farther south, the limestone strata incline gently to the south- 
east, and then to the south-west, forming in fact with the preceding 
