Sxxv.—On the Mineral Waters of New Zealand. 433 
No. (2)—From Ta-pui Te Koutu, three-quarters of a mile from Ohine- 
mutu, a large pool, 60 to 80 feet deep. The usual temperature of the 
water in this pool is from 90° to 100°, with westerly or southerly winds ; 
but if the wind changes to N. or E., the water rises four feet in level, and 
the temperature increases to 180°, with a strong outflow. Thick masses of 
slimy Confervoid plants line the bottom of the pool. As received, the water 
was clear and colourless, with an alkaline reaction. 
Analysis. 
Silicate of soda .. as 82-12 
Mono-silicate of lime 1:62 
5 magnesia “40 
» iron 67 
Sulphate of soda 1:06 
Chloride of potassium :97 
re sodi 29-94 
Phosphate of alumina traces 
72°78 
Excess of silica over what is required to pass these bases as snbno:niliaakcn i 5:55. 
No. (8)—From Turi-kore or Whakarewarewa, 2i miles from Ohine- 
mutu. The sample was taken from a waterfall which drains from a large 
pond 300 yards long, the reservoir of a number of boiling springs that are 
in continual activity. The temperature of this fall is from 96° to 120°. The 
water is of a dirty brown colour, and is in great repute among the Maoris 
for the cure of all cutaneous diseases. As received, it was clear and 
colourless, with a faintly acid reaction, which changes to alkaline on boiling 
the water. 
Analysis. 
Silicate of soda bi a is He 16:32 
» li js vx M 1:61 
uA magnesia i LE 114 
» iron -89 
Sulphate of soda 13:47 
Chloride of potassium 1:24 
sodium š 53:61 
Phopledé of alumina ve zs <i .. traces 
87-78 
No. (4)—From Kuirua, in the native village of Ohinemutu, on the shore 
of Rotorua Lake, where a strong stream flows from a number of hot springs 
which cover an extent of about 30 acres. This has a temperature of from 
136? to 156°, and is so soft that clothes can be washed in it without the use 
D2 
