t process my results
are obtained, but submit specimens for examination.

"(1) Piece of previously non-gold bearing stone. Locality near Adelaide,
now showing gold freely in mammillary and dendroidal form.

"(2) Stone from New South Wales, showing gold artificially introduced in
interstices and on face.

"(3) Stone from West Australia, very glassy looking, now thoroughly
impregnated with gold; the mammillary formation being particularly
noticeable.

"(4) Somewhat laminated quartz from Victoria, containing a little
antimony sulphide. In this specimen the gold not only shows on the
surface but penetrates each of the laminations, as is proved by
breaking.

"(5) Consists of fragments of crystallised carbonate of lime from
Tarrawingee, in which the gold is deposited in spots, in appearance like
ferrous oxide, until submitted to the magnifying glass.

"The whole subject is worthy of much more time than I can possibly give
it. The importance lies in this: That having found how the much desired
metal may have been deposited in its matrix, the knowledge should help
to suggest how it may be economically extracted therefrom."

A very remarkable nugget weighing 16 3/4 oz. was sluiced from near the
surface in one of my own mining properties at Woodside, South Australia,
some years ago, which illustrated the nuclear theory very beautifully.
This nugget is very irregular in shape, fretted and chased as though
with a jeweller's graving tool, showing plainly the shape of the
pyritous crystals on which it was formed while the interstices were
filled with red hematite iron just as found in artificially formed
nuggets on a sulphide of iron base. The author has a nugget from the
same locality weighing about 1 1/2 oz. which exhibits in a marked degree
the same characteristics, as indeed does most of the alluvial gold
found in the Mount Lofty Ranges; also a nugget from near the centre
of Australia weighing four ounces, in which the original crystals of
pyrites are reproduced in gold just as an iron horse-shoe, placed in
a launder through which cupriferously impregnated water flows, will in
time be changed to nearly pure copper and yet retain its shape.

Now with regard to the four points I have put as to the apparent
anomalies of occurrence of alluvial gold. The reason why alluvial gold
is of finer quality as a rule than reef is probably because while gold
and silver, which have a considerable affinity for each other, were
presumabl