180 
the rim is highest, and 300 feet above the floor of the crater. Prom this 
point it gradually falls on each side to the gap. In width, the rim is 
only a few feet on the top, with a steep descent on the inner side of the 
crater. There is about 6 acres of level ground surrounded by the rim. 
Grey vesicular basalt with some scoriaceous lava forms both the floor and 
the rim of the crater. Angular fragments of transparent oligoclase felspar 
and some small pieces of black glassy-looking mineral are met with on the 
rim and slopes, and occasionally a nodule of alivine. The rim of the 
crater is about 20 chains across. This volcano has broken through 
Ordovician slates and sandstones, and appears to have been active for a 
lengthened period from Newer Pliocene' to perhaps Post Pliocene times. 
The lava flows have covered up auriferous drifts that were once in the 
beds of streams and water-courses. The basalt has been attacked by 
denuding agencies, and the drainage lines deepened to such an extent that 
these auriferous drifts have been worked extensively by levels and, in 
some cases, with much profit. 
From Mt. Franklin and the adjacent points of eruption lava flows ex¬ 
tended far down Jim Crow Creek. After much denudation there is still 
a continuous strip of basalt for 7 miles to the north-west of Mt. Franklin. 
The slopes of the crater are timbered. 
[Retort sent in 4.11.07.'] 
THE LORD TENNYSON REEF, WELSHMAN’S GULLY, 
EGANSTOWN, NEAR DAYEESFORD. 
By A. M. Howitt. 
The beds adjacent to the Lord Tennyson reef are Ordovician slates 
and sandstones, which strike N. 20 deg. W., and dip both east and west 
at angles varying from 60 deg. to 70 deg. 
t he reef is a lenticular laminated quartz block with an average width 
of 1 foot, bulging to 2 feet in width near the middle, and in strike it 
cuts the beds at a big angle. 
Originally this reef was worked by a party holding the ground under 
lease, but the present holders are working under miners’ rights. 
From the surface to 95 feet deep the reef was payable and up to 
30 feet in length, but water trouble caused the mine to< close down. 
Six months ago Osborne and party took up the ground, and decided 
to sink a new whim shaft 70 feet to the south of the old windlass shaft. 
This shaft they sunk 150 feet, timbered it closely In three partitions, and 
erected a whim, intending to cut the reef on its south pitch, and stope up 
to the old workings. 
Their cross-cut at the 150-ft. level failed to cut the reef, and con¬ 
tinuing on they passed through a slide to the east of where the reef 
should have been, SO' a rise was put up at 40 feet to the north-east of the 
shaft, and the reef found on the slide at a point about 30 feet above the 
150-ft. level, thus allowing them very little of the reef to stope out. 
The reef strikes W. 40 deg. N., underlies 70 deg. to the west, and 
pitches to the south-east at an angle of 60 deg. The slide strikes N. 
1 deg. W., and dips 60 deg. to the east, so the intersecting angle of the 
reef and slide is about 30 deg., causing the appearance of a wedge where 
the reef cuts off to the south-east on the slide. 
