474

THE NEW ZEALAND GAZETTE.

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 ... 16.32
" lime ... 1.61
" magnesia ... 1.14
" iron ... .39
Sulphate of soda ... 18.47
Chloride of potassium ... 1.24
" sodium ... 53.61
Phosphate of alumina ... traces
87.78

No. 4. From Kuirau, 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 of soap.
It deposited a white flocculent sediment in the
bottles, leaving the water clear, with a faint yellow
tint, and an alkaline reaction.

Mono-silicate of soda ... 2.57
" lime ... .34
" magnesia ... .12
" iron ... .31
Sulphate of soda ... 10.31
Chloride of potassium ... 2.08
" sodium ... 45.70
Phosphate of alumina ... traces
Silica free ... 18.42
79.85

No. 5. From Koroteoteo, or the "Oil Bath," at
Whakarewarewa. This is a strong boiling stream,
the recorded temperature being 214° from two springs,
one of which, surrounded by beautiful sulphur
incrustations, throws a powerful jet to a height of
20 feet. The water is distinctly alkaline, or slightly
caustic, which is probably the reason for its being
termed an "oil bath."

Analysis:
Mono-silicate of soda ... 2.08
" lime ... 3.16
" magnesia ... .76
" iron ... .85
Sulphate of soda ... 7.49
Chloride of potassium ... 1.46
" sodium ... 66.34
" lithium ... traces
Silica free ... 22.40
Phosphate of alumina ... traces
104.54

No. 6. Otukapuarangi, the pink terrace of Roto-
mahana. This terrace has been built up round a
great circular pool 180 feet in diameter, from which
there is a strong outflow of clear bright water,
having a temperature of 204° to 208°, and depositing
siliceous sinter of a delicate pink tint in large quantites.
As received, the water was faintly acid, changing to
alkaline when boiled.

Analysis:
Silicate of lime ... 1.91
" magnesia ... 1.16
Chloride of potassium ... 1.05
" sodium ... 93.55
Sulphate of lime ... 10.96
" soda ... 1.01
Alumina as phosphate ... .54
Silica, free ... 43.95
Iron oxides ... traces
154.13

No. 7. Manupirua, on the S.E. shore of Rotoiti,
a beautifully clear pool 20 feet in diameter, having a
temperature of 107° to 110°, at the foot of a high
pumice cliff on the shore of the lake. The water

is clear, with a bluish tinge, harsh to the touch, and
deposits sulphur. This pool has a strong outflow of
40 to 50 gallons per minute, and is reported to have
great curative properties.

Mono-silicate of lime Analysis: 1.51
" magnesia ... .77
" iron ... .99
Sulphate of soda ... 11.50
Chloride of potassium ... 2.43
" sodium ... .47
Silica uncombined ... 6.25
32.45

No. 8. From Kauwhanga, 14 miles from Ohine-
mutu, a powerful sulphur bath, having a temperature
of 204°. The water as received was clear and colour-
less, with a distinct acid reaction, and evolving an
offensive odour, and depositing a brownish sediment
on being boiled. This bath is reputed to have great
curative properties, and is known to tourists as the
"Pain-Killer."

Analysis:
Sulphate of potash ... 2.96
" soda ... 34.37
Chloride of sodium ... 59.16
calcium ... 3.33
magnesium ... 1.27
iron ... .25
Phosphate of alumina ... traces
Silica ... 16.09
Hydrochloric acid ... 7.60
Sulphuretted hydrogen ... 2.01
127.04

No. 9. Cameron's Bath, situated in the same
locality as No. 6. It is a muddy pool 20 feet in
diameter, having a temperature of 109° to 115°, but
kept in a state of ebullition by a powerful escape of
gas, which causes faintness when inhaled. The pool
has no outflow, and the water is a dirty chocolate
colour. As received, the water had a persistent acid
reaction and offensive odour, and had deposited a
siliceous sediment in large quantities.

Analysis:
Sulphate of potash ... .94
" soda ... 33.47
" alumina ... traces
" lime ... 2.11
" magnesia ... 1.14
" iron ... 1.20
Phosphate of alumina ... traces
Sulphuric acid, free ... 76.79
Hydrochloric acid, free ... 7.28
Sulphuretted hydrogen ... .41
Silica ... 7.01
130.35

No. 10. From Perekari, 1 miles from Ohinemutu.
Temperature of water 130° to 150°. A boiling pool
in a sand spit near the lake, in which the water is
discoloured, and has a very offensive smell. As re-
ceived, it was clear and colourless, with a strong acid
reaction, and had deposited a great deal of sediment,
which consisted of nearly pure silica.

Analysis:
Sulphate of soda ... 26.75
" alumina ... traces
" lime ... 2.45
" magnesia ... 1.86
" iron ... .76
Chloride of potassium ... .63
Phosphate of alumina ... traces
Hydrochloric acid, free ... 5.38
Silica ... 18.17
56.00

No. 11. From Te Kauwhanga mud bath, 14 miles
from Ohinemutu. A thick, brown, muddy water,
covered with an oily slime, and having a temperature