Cox. — On the Mineralogy of New Zealand. 379 



springs occur (Hochstetter, New Zealand, 1863, Eng. ed., p. 401). It is 

 found again as an efflorescence on the sulphur sands of lower cretaceous 

 age at Waipara (Haast, Geol. Kep., 1870-71, p. 11), and at various other 

 localities ; and the late Mr. E. H. Davis mentions its occurrence (Geol. 

 Bep., 1870-71, p. 131) in Doran's No. 2 Keef, at Wangapeka. Analyses of 

 samples from White Island have given the following results : — 



Liversidge. Cox. 



Sulphur ,. .. 99-614 99-554 98-888 99-9 94-1 62-5 

 Foreign matter . . -386 -446 1-112 -1 5-9 37-5 



100-000 100-000 100-000 1000 100-0 1000 

 They vary in physical characters from a massive rich sulphur yellow 

 mineral to a loose friable variety with a pale-greenish tinge and some very 

 beautiful, although small, crystals also occur. These are of a pale-greenish 

 colour, and consist chiefly of sharp acicular rhombic prisms ; but some very 

 unusual combinations also occur which have been described by the late Mr. 

 E. H. Davis (Trans. N.Z. Inst., vol. iii., p. 284). They are frequently 

 associated with crystals of selenite. 



Selenium, Se. — Prof. Liversidge (Trans. N.Z. Inst., vol. x., p. 491) states 

 that he obtained traces of selenium in the massive yellow variety of sulphur 

 from White Island. 



Non-Metallic Minerals. — Class IV. 

 Salts of ammonia, potash, soda, baryta, strontia, lime, 



Haloids and Salts. , 



magnesia, alumina, yttria, and ceria. 



Salts of Soda. 



Glauber Salts, Na S + 10 H. — A specimen of this mineral was for- 

 warded for determination by Mr. W. H. Beetham in 1874. The locality of 

 its occurrence is Brancepeth, Whareama, Wellington. 



Salts of Baryta. 



Barytes, Ba S. — This mineral was collected by Dr. Hector from Akiteo 

 in 1867, and Mr. Skey mentions its occurrence (Geol. Bep. 1870-71, p. 85) 

 in the auriferous reefs of the Thames. Mr. McKay collected a specimen 

 from Paonui Point, near Napier, in 1874, and specimens have also been 

 received from Te Arai Point, Auckland, and from near East Cape. The 

 following specimens are at present in the collection of the Colonial Mu- 

 seum : — 



1. Crystals of Barytes. — Crown Princess Claim, Thames. Of a pure 

 white colour, the largest crystal being about half an inch long. They are 

 of a tabular form, consisting of the prism oo P ; the brachypinacoid goPoo 

 and the basal pinacoid OP, but in some forms the brachypinacoid is re- 

 placed by small faces of the brachydome Poo . 



