Cox.—On the Mineralogy of New Zealand. 389 
Rep. N.Z. Ex., 1865, p. 256) in mammillated and botryoidal forms in 
amygdaloidal traps and quartzose trachytes, Canterbury; and by Dr. v. 
. Hochstetter (New Zealand, 1868, Eng. ed., p. 96) in the tuffs and con- 
glomerates of Coromandel; agates being mentioned from the same localities 
and onyz by Dr. v. Haast from the Malvern Hills, Clent Hills, Mt. Somers, 
eic. Prof. Liversidge (Trans. N.Z. Inst., vol. x., p. 494) mentions the 
occurrence of chalcedony at Moeraki and Otepopo, and agate at Mt. 
Charles, Otago. 
Carnelian is mentioned by Dr. Hector (Jurors’ Rep. N.Z. Ex., 1865, 
pp. 266, 487) in the voleanic rocks at Moeraki and Otepopo, and the por- 
phyritic rocks of Dunedin Harbour; by Dr. v. Haast (Jurors’ Rep. N.Z. Ex., 
1865, p. 256) in small geodes in the volcanic rocks of Canterbury; and by 
Dr. v. Hochstetter (New Zealand, 1868, Eng. ed., p. 96) in the tuffs and 
conglomerates of Coromandel ; and Professor Liversidge (Trans. N.Z. Inst., 
vol. x., p. 495) describes two inferior specimens from Coromandel. 
Plasma.—There are four specimens of this mineral in the collection of 
the Colonial Museum from Mt. Somers and Gawler Downs. They are of a 
pale to dark leek green and waxy lustre. It is also mentioned by Dr. 
Hector (Jurors’ Rep. N.Z. Ex., 1865, p. 266) in the volcanic rocks of 
Moeraki and Otepopo; and by Dr. v. Haast (Jurors’ Rep. N.Z. Ex., 1865, 
p. 256), filling fissures in tertiary quartzose trachyte at Gawler Downs. 
Chrysoprase is mentioned by Dr. v. Haast (Jurors' Rep. N.Z. Ex., 1865, 
p. 256) filling cavities in amygdaloidal rocks in Canterbury. 
Bloodstone.—' There is one inferior specimen in the collection of the 
Colonial Museum from Clent Hills. It is of a deep green colour with small 
red spots. Dr. v. Haast mentions its occurrence in small pieces at Snowy 
Peak and Malvern Hills. 
Quartz as Pseudomorphs of Calcite.—There is a specimen of quartz from 
the Malvern Hills in the collection of the Colonial Museum forming hollow 
pseudomorphs of rhombohedral erystals of calcite, some of the calcareous 
crystals being still preserved, and Dr. Haast also mentions the occurrence 
of a similar mineral at Rakaia Gorge and Clent Hills (Jurors’ Rep. N.Z. 
Ex., 1865, p. 256.) 
Quartz Sands.—Heavy deposits of quartz sand in various degrees of 
purity occur associated with the lower beds of the cretaceo-tertiary forma- 
tion at Mt. Somers, Limestone Bluff on the Ashburton River, Lake Heron 
and Waipara, as mentioned by Dr. v. Haast (Geol. Rep., 1870-71, p. 11; and 
1873-74, p. 17.) 
Tridymite, Si—Small hexagonal plates of tridymite occur in the trachy- 
tic rocks of Lyttelton Harbour, and were first recognized by Professor 
Ulrich in specimens collected by Dr. v. Haast. 
