BISMUTH MINERALS, MOLYBDENITE & ENHYDROS— LIVERSIDGE. 35 
crystal rising fr,om, and crossing the horiaontal ones. In 
other cases the plates of molybdenite penetrate the crystals of 
quartz, and pass between the adjacent faces of the rock crystal. 
Some of the quartz crystals are cavernous, and have the vugs 
lined with small crystals of quartz, showing the usual combination 
of the prism and pyramid. In one specimen the molybdenite is 
seated on tinstone. From Kingsgate, Glen Innes, N.S.W. 
Molybdenum ochre. 
In the form of yellow patches consisting of felted acicular 
crystals. From Kingsgate, Glen Innes, N.S.W. 
Enhydros, or Water Stones. 
(Plates ix. x.) 
No locality is given for these, but they so closely resemble 
those formerly found at Spring Creek, Beechworth, Victoria, that 
they in all probability come from that place. The specimens 
figured on plates ix. and x. are remarkable for their large size, the 
plates show them of their natural dimensions, except that plate x. 
is much foreshortened from a to 6, being 7^ inches in length 
instead of about 2|- as shown. Plate ix. shows the hollow nature 
of these enhydros, where the ends having been broken off, the 
interior is thickly coated or lined with small pyramids of quartz 
crystals, the thicker one (plate x.) is also hollow, and each of the 
plates of which it is made up is likewise hollow or shows a 
tendency to form a cavity at the thicker parts ; in some this is 
merely indicated by a crystalline structure. One of the enhydros, 
not figured, is attached to a lump of ordinary quartz. The outer 
surfaces of all of them are of very hard, smooth chalcedony, having 
a horny appearance and brownish colour, stained with iron oxide. 
The sp. gr. is 2*66, i.e. the usual sp. gr. of quartz. Hardness 
= 7*5. None of these three retained any liquid. 
Mr. E. J. Dunn described the mode in which the enhydros 
occur at Spring Creek, in a paper read before the Royal Society 
of Victoria (Trans. R.S. of Vic., 1870, p. 32); they are found in 
a dyke in granite, the dyke is composed of fragments of granite 
and occasional pieces of sandstone cemented by crystallised 
quartz, together with large masses of coarse chalcedony and 
straight veins of chalcedony scales and clay. Mr. Dunn 
mentions that the enhydros vary in size from that of a split pea 
to five inches across, and that many of them contain a fluid ; 
after a few days exposure they usually show an air bubble, 
in many the fluid disappears altogether in a few days ; the 
walls of some are as thin as a sheet of paper and very fragile, 
while others have walls ^ inch thick. On p. 71 of the same 
