940 J. MILNE CURRAN. 
1. In this specimen an emerald is seen imbedded along its 
length in pure tin-white arsenical pyrites. In colour this stone 
is faultless. (A coloured photograph of this beautiful specimen 
was exhibited.) 
2. An emerald crystal, two inches long, completely imbedded | 
in purple fluorspar, Originally the emerald and fluorspar was 
imbedded in kaolin. When broken across a very perfect hexagonal 
crystal of emerald was seen to be set in a ring of the purple 
fluorspar. A coloured plate of this remarkable stone was handed 
around. 
3. Here a long crystal of emerald rests in a quartzose matrix 
with kaolin and fluorspar. 
4, A rock composed almost exclusively of topaz cemented with 
kaolin ; long acicular crystals of emerald penetrate the kaolin in 
different directions. 
5, White fluorspar enclosing topaz, emerald, and bery]. 
6. A red compact felspathic material enclosing abundant 
crystals of beryl and emerald. 
7. This specimen contains purple and white fluorspar, crystals 
of tin-stone, crystallised quartz, arsenical pyrites, and crystals of 
biotite. 
A number of emeralds and beryls have been found to occur 
loose in soft kaolin in various parts of the Proprietary Mine. 
These crystals as a rule are small, (see Plate 16, fig. 1) but very 
perfect in form. The plate referred to gives an idea of their appear- 
ance. Some of the crystals are terminated, showing the basal and 
pyramidal planes. An exhaustive report on this mine by Professor 
David will be found in the Annual Report of the Department of 
Mines N. 8. Wales for the year 1891. 
Size and Value.—The largest emerald found in the Proprietary 
Mine is estimated to weigh 23 carats; but this is cracked in 
several places along the basal cleavage, so that an exceptionally 
large stone could not be cut from it. A few stones of first quality 
