434 



Transactions. — Chemisirij. 



of soap. It deposited a white fiocculeDt sediment iu the bottles, leaving the 

 water clear, with a faint yellow tint, and an alkalme reaction. 



Analysis. 

 Moiio-silicate of soda 



,, lime 



,, magnesia 



„ iron 



Siilpliate of soda 

 Chloride of potassium 



,, sodium . . . . . . 



Phosphate of alumina 

 Silica, free 



lYo. (o.) — From Korofceoteo, 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 it being termed an "oil 



bath." 



Analysis. 





•34 





•12 





•31 





. 10-31 





. 2-08 





. 45-70 





. traces 





. 18-42 





79-85 



Mjno-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 Eotomahana. 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 . . . . • . • . . . • • 1"91 



,, magnesia . . . . . . • • . . 1"16 



Chloride of potassium . . . . . . . . . . 1"05 



