Sxxy.—On the Mineral Waters of New Zealand. 487 
Analysis. 
Sulphate of potash T. E: ce a ss 40 
Rs soda ig F is is so dd TÀ 
e alumina 1:46 
2 lime 2:04 
mm magnesia 1:62 
Be iro: Pike a AT 
Phosphate of alumina... <i ay VE .. iraces 
Sulphuric acid, free = é. ed vé 
Hydrochloric acid, free — .. v ix vs Soe 08 
Sulphuretted hydrogen .. re are Es £e 89 
Siliea is i» ; R " 13:86 
63:38 
No. (12).—From Ariki-kapakapa, 2 miles from Ohinemutu, a small 
pool with a strong outflow, having a temperature of 160°. It deposits 
sulphur, and is surrounded by a great number of other baths and mud 
voleanoes. It is reported to have powerful curative properties. It was 
colourless as received, with a heavy deposit of silica, and an acid reaction, 
which was permanent at its boiling point. 
Analysis. 
Sulphate of potash EX oF ihe on is “38 
soda ue Ls s ss s 4451 
» alumina < i ace a : *68 
i lime Sd S si x e m rr 
re magnesia ee v e T res 9 
T i =< ux ze $s Rr Ib 
Phosphate of alumina A os M ES .. traces 
Sulphuric acid, free s E s Am s dab 
Hydrochloric acid, “oe ve s ve v PON 
Silica ral v% Ss x vs .* ss AB 1D 
54:94 
No. (18).—Sulphur Bay Spring, on the edge of Lake Rotorua, formed 
by innumerable small jets forced up through sand, haying a disagreeable 
odour, and a temperature from 90° to 100°. This bath is reported to have 
‘a powerful action on the skin, owing no doubt to the large quantity of 
sulphuric acid it contains. As received, it was colourless, with a slight 
flaky sediment. 
Analysis. 
Sulphate of potash 5 oe "e xs zx 07 
Ex soda + x pr wc 9 
os lime = =a .. kx sc ND 
