Cox.—On the Mineralogy of New Zealand, 383 
Dr. v. Haast (Jurors’ Rep, N.Z. Ex., 1865, p, 256) states that it occurs 
lining fissures and cavities in the volcanic rocks of Banks Peninsula. In 
1869, Capt. Hutton collected specimens from the Eldorado claim, Thames ; 
in 1870 a specimen with calcite was forwarded from Oamaru by Mr. Traill ; 
in 1875 Mr. McKay collected specimens from Whangaroa North, and in 
1877 another from Waitaki. Prof. Liversidge (Trans. N.Z. Inst., vol. x., 
p. 493) describes four specimens from Dunedin, three of these being in 
amygdaloidal cavities, associated with calcite, and corresponding with the 
specimen I collected from Seacliff (mentioned under calcite, p. 881); the 
fourth being rosettes of pale yellow-coloured prisms. The acicular crystals 
of carbonate of lime mentioned by Dr. Hector (Handbook of N.Z., Mel- 
bourne Exhibition, 1880, p. 108) as deposited from a hot spring at Waipiro 
are also probably aragonite. The specimens in the Colonial Museum are:— 
1. Crystals of Aragonite.—Eldorado Claim, Thames. A pure white 
transparent variety 1 in prismatic crystals, consisting of the prism oP, the 
brachypinacoid Pa , and the brachydome Po. 
2. Crystals of Aragonite.—Quartz hills, Collingwood. These include a 
large collection which I made during the summer of 1880, some of the 
groups of crystals being of exceeding beauty. They occur under somewhat 
unusual circumstances, having crystallized in small recesses about a foot 
deep in an isolated patch of limestone which occurs there. They consist 
chiefly of rhombic prisms, macled along a face of c P. They sometimes 
assume a more or less radiate form, but far more frequently interlace, 
forming a most beautiful network of fine acicular crystals. In some cases 
again they occur as little tufts of cream-coloured crystals about half an 
inch in diameter, and again as small bunches of acicular crystals, which 
are frequently terminated by very small stalactites. They are generally of 
a pale cream colour, but in some cases are brown, owing to the presence of 
ferric oxide. 
Gypsum (Selenite), Ca S + 2 H.—This mineral occurs in several loca- 
lities in New Zealand, either in groups of crystals associated with sulphur, 
as on White Island, where it also occurs in a massive form with sulphur 
disseminated through it; or as nests of crystals in clay or marl, as at 
Moeraki and Waihao. The first mention of it in New Zealand is by Dr. 
Hector (Jurors’ Rep. N.Z. Ex., 1865, pp. 85, 266, 422, and 437), who 
states that it is found crystallized in clay at Moeraki, and also in lenticular 
masses at the same locality. It is again mentioned by Dr. v. Haast 
(Jurors’ Rep. N.Z. Ex., 1865, p. 256) occurring as crystals on the surface 
of tertiary shales at Tenawai. Dr. Hector also mentions the occurrence of 
gypsum (Trans. N.Z. Inst., vol. ii., p. 867) in the auriferous rocks of the. 
Thames (Trans. N.Z. Inst., vol. iii., p. 278), at White Island (Geol. Rep., 
1878-74, pp. xii. and xviii.) in the sulphur sands of Amuri Bluff and the 
