Cox. — On the Mineralogy of New Zealand. 389 



Eep. N.Z. Ex., 1865, p. 256) in mammillated and botryoidal forms in 

 arnygdaloidal traps and quartzose trachytes, Canterbury ; and by Dr. v. 

 Hochstetter (New Zealand, 1863, Eng. ed., p. 96) in the tuffs and con- 

 glomerates of Coromandel ; agates being mentioned from the same localities 

 and onyx by Dr. v. Haast from the Malvern Hills, Clent Hills, Mt. Somers, 

 etc. 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' Eep. N.Z. Ex., 1865, 

 pp. 266, 437) in the volcanic rocks at Moeraki and Otepopo, and the por- 

 phyritic rocks of Dunedin Harbour ; by Dr. v. Haast (Jurors' Eep. N.Z. Ex., 

 1865, p. 256) in small geodes in the volcanic rocks of Canterbury ; and by 

 Dr. v. Hochstetter (New Zealand, 1863, 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' Eep. N.Z. Ex., 1865, p. 266) in the volcanic rocks of 

 Moeraki and Otepopo ; and by Dr. v. Haast (Jurors' Eep. N.Z. Ex., 1865, 

 p. 256), filling fissures in tertiary quartzose trachyte at Gawler Downs. 



Chrysoprase is mentioned by Dr. v. Haast (Jurors' Eep. N.Z. Ex., 1865, 

 p. 256) filling cavities in arnygdaloidal 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 crystals of calcite, some of the calcareous 

 crystals being still preserved, and Dr. Haast also mentions the occurrence 

 of a similar mineral at Eakaia Gorge and Clent Hills (Jurors' Eep. 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 Eiver, Lake Heron 

 and Waipara, as mentioned by Dr. v. Haast (Geol. Eep., 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. 



