51 
schistose ; secondly, altered lower Silurian strata, not 
showing a dip anywhere very clearly, massive and much 
jointed ; following this thci’e was a considerable thickness 
of quartzite, and further up the stream we came upon very 
thin purple shales and reddish brown and purple conglo¬ 
merates. In one place a distinct cleavage in the thin 
shales, at an angle of about 10° to the plane of bedding, 
was noticeable. 
The time at our disposal did not admit of our ascending 
Mount Tambo, where rocks of a similar lithological 
character are said to dip at an angle of 40°. 
As far as we can gather, no organic remains of any 
kind have been found in these rocks, and their position in 
the geological series is therefore unsettled. There appear 
to us no sufficient grounds for regarding them as the 
equivalents of the sandstones of the Victoria and Sierra 
Range. The resemblance is enough to deceive, and that 
is all. None of the sections shown to us enabled us to 
say in what relation they stand to the Devonian lime¬ 
stones. They may, for aught that is known to the 
contrary, be as old or older than the Devonian lime¬ 
stones. 
On regaining the track, we crossed a small tributary of 
the Tambo, and commenced the ascent of the Dividing- 
Range. Here we found fine yellow and white mudstones, 
and yellowish-white sandstones, nearly vertical, and almost 
bare of soil. The age of these is as uncertain as that of 
the thin purple shales in the bed of the Tambo, and can¬ 
not be determined until the organic remains in them—if 
there be any—shall have been examined. The summit of 
the range was attained at 6.30 p.m. The reading of the 
aneroid at this point was 26-400 at 6.30 p.m. on Wed¬ 
nesday the 4th February. 
T) 2 
