404 Transactions, —Chemistry. 
ofsoap. It deposited a white flocculent sediment in the bottles, leaving the 
water clear, with a faint yellow tint, and an alkaline reaction. 
Analysis. 
Mono-silicate of soda aR s SER E 
2 . lime 3 $ :84 
Rt magnesia i soe d vs “13 
" iron = d i. Pe :81 
Sulphate of soda Pi Je s A $52 1081 
Chloride of potassium — .. ee ià Ws i072 08 
5 sodium s e.c 470 
Phosphate of alumina ss = * is .. traces 
Siliea, free Sm s ES ix CE 18: 
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 eaustie, which is probably the reason for it being termed an **oil 
bath." 
Analysis. 
Mono-silicate of soda ts ws 2-08 
$ lime x 3 7 3:16 
» . magnesia i5 5 s T "16 
m iron sa zE S m 3S "85 
Sulphate of soda es = ae = ae 
Chloride of potassium .. 5m xs x uc TAB 
25 sodium x» NE ED is ce 06:34 
» um zm ix ae Be .. traces 
Silica, free iw is E v7 <a .. 22:40 
Phosphate of alumina — .. os oe we .. traces 
104:54 
No. (6).—Otukapuarangi, the “pink terrace” of Rotomahana. This ter- 
race 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 quantities. As received, the water was faintly acid, changing to 
alkaline when boiled. 
Analysis. 
Silicate of lime .. - .. a ee s PM 
H magnesia n 
Chloride of potassium ae ee ee ee ee 1:05 
Wan dep eS ede asi ET Pu 
