5G 
by denudation. The denuding forces 
have operated here energetically, and 
it is no cause for surprise that craters 
are no longer to be found. 
It was highly interesting to us to 
note the character of the volcanic rocks 
in this area ; and it was with regret 
that we had to leave it without ex¬ 
amining the volcanic breccias on the 
slopes of the mountains, the cap of 
Tabletop, and the lake that lies at its 
. base. 
The volcanic rocks thin out as the 
summit of the range is reached, and 
on Mount Ilotham we found only 
lower Silurian rocks. On the road to 
Mount Hotham we observed fine sand¬ 
stones, shaly and slaty mudstones, and 
silky shales, but nowhere did we see 
any graptolites or other organic re¬ 
mains. 
From Mount Hotham to Bright our 
route was wholly over lower Silurian 
rocks. 
The following is a rough section of 
the rocks exposed between Parslow’s 
and the River Ovens :— 
We had the opportunity of examining 
many parts of this section very care¬ 
fully, and it is certainly suggestive of 
important changes in the physical struc¬ 
ture of the country since the period of 
the overflow of the volcanic rocks. 
. Mica schist and gneiss.- b. Granite.- c. Lower Silurian.- d. Upper rolcanic.- oooo. Auriferous drift underlying 
upper volcanic rock. 
