9 
country embracing all the principal western gold-fields ; for there is no 
geological work that can be performed in the State which will so directly 
tend to assist the advancement of the mining industry. 
It is intended to locate a survey party on the Wedderburn gold-field 
during the coming winter. 
Mr. Oliver Grey rendered good service in pointing out to me the inte¬ 
resting features of the localities visited. 
Explanation of Plan and Section of Part of Brockwell and 
Grigson’s Claim, Wedderburn. 
The plan shows centre-country (the anticline) which is well marked on 
the surface, and traceable for a much longer distance than appears on 
the plan. Two “ indicators ” are shown close to centre-country, one to 
the east and the other to the west; this, in fact, is the same bed of slate 
bent over the axial line. Further to the east the Caledonian “ indicator ” 
Section along A B in Fig. i. 
is shown. This indicator, another bed of slate 2 inches thick, has been 
extensively worked. It has been followed along its course for some hun¬ 
dreds of feet, and was worked down to a depth of from 40 to 65 feet, 
