166 
the various levels and from the manner in which the water comes in from 
the north-west edge of the workings, and also from the manner in which 
the wash-dirt dips underfoot in the extreme north-western wash-drive of 
the New Havillah Mine, and has a tendency that way in the Charlotte 
Plains Mine, and also from the entire!v different character of the wash- 
dirt in the workings 1,010 feet from the latter shaft, there is every reason 
to believe that the main gutter has only been touched so far in the 1,010 
feet workings of the Charlotte Plains Mine, and, perhaps, in the extreme 
north-western wash-dirt drive in the New Havillah Mine. To prove this 
matter, which is of vital importance, the New Hayillah north-west inter¬ 
mediate level should first be pushed out, but with very great precaution, 
for another 800 feet in a north-westerly direction, and later the extreme 
northern reef-level of the Charlotte Plains should be also continued for 
another 800 feet, swerving from its present course so as to readi a point 
a little east of No. 1 bore. The cost would be about £1 per foot. 
If a main gutter is disclosed then there would be 3 miles of gutter 
available between the Charlotte Plains Mine and the Chalks No. 3 boun¬ 
dary, which could be panelled out if two shafts are sunk at proper intervals 
between the New Havillah shaft and the Chalks No. 3 boundary. 
It is a most encouraging feature that, in the Charlotte Plains Mine, 
the portion of the wash-dirt on the outer side of the bend (that is cer¬ 
tainly inferior to what exists further north-east, or on the inner side of 
the bend) yields so much as 12 dwts. of gold per fathom. Richer 
ground may be expected as the opposite margin of the lead is reached. 
[Report sent in 12.11.07.'] 
THE NORTH LANGDON MINE, BENDIGO. 
By E. /. Dunn, F.G.S., Director, Geological Survey. 
This mine is 4 miles south of Bendigo, and situate on a ridge about a 
quarter of a mile north of the Thistle Mine. It is on the Thistle Line 
of reefs. Over 30 years ago this mine was extensively worked, and 
it is reported with good results. Certainly a very large bulk of quartz 
was extracted. The reef, which has somewhat the appearance of a saddle 
reef pitching rapidly northward, was of great thickness, ranging up to 15 
to 20 feet and tapering out on the western portion to a foot or so thick. 
The shaft is sunk to a depth of 410 feet. At 130 feet, a large body 
of quartz occurs, then curves around the north side of the shaft, and the 
country on the west side appears to conform to it. There are no east 
cross-cuts open. At 170 feet deep, and 17 feet west of the shaft is a well- 
marked wall that dips west about 60 deg. A large body of quartz has 
developed on this wall and it bends around to the north of the shaft. 
The quartz pitches north rapidly. At a depth of 220 feet, and 30 feet 
west of the shaft is a wall and channel dipping 65 deg. W. The pitch here 
is 23 deg. N. The slate and sandstone between the shaft and this wall 
all dip west. A large quartz body has been worked on the continuation 
of the west wall in a northerly direction to the. northward of the shaft, 
and round to the eastward, but the east workings were not accessible. 
At a depth of 280 feet, and 60 feet west of the shaft the wall was cut 
dipping west at 70 deg., and pitching north at 47 deg. There is a large 
body of quartz on the west side of the shaft that resembles a saddle reef. 
This has been worked to the north of the shaft on a considerable scale. 
At each level as depth increases this body of quartz is met with further 
north from the shaft. 
