Wellington PJiilosojpliical Society. 



431 



An analysis showed it to contain 13 "60 per cent, of silver, a rather large 

 proportion, making it approximate in this respect to the least argentiferous 

 gold from Coromandel, but having an excess of silver over the Whakamarina 

 gold. 



3. "Eesults of an Analysis of the fixed Constituents of Eain "Water 

 collected from a Gralvanized Iron Eoof," by W. Skey. 



The analysis was undertaken more especially with the view to determine 

 the quantity of zinc and arsenic present. 



One gallon of the water yielded 1'16 grain of matter, fixed at a dull 

 heat, which analysis divided as follows : — 



Silica 



Sesquioxide of iron 



Alumina . . . 



Lime 



Magnesia ... 



Alkalies 



Oxide of zinc 



Carbonic acid 



Hydrochloric acid 



1-160 



4. " On supposed Coal from the Auckland Islands," by "W. Skey. 

 This proved to be crystalline hornblende. 



5. " On Extract of Towai Bark," by W. Skey. 

 The bark was furnished by Mr. Grrayling, of Taranaki, 



ANALYSIS. 



Water 215 





.. -656 





.. -224 





.. 112 





.. -048 





.. Traces 





)j 





.. -120 





.. Traces 





j> 



Catechuic acid 



Tannic acid... 



Lignin 



Grum and undetermined matter 



42-5 

 311 



1-8 

 31 



100- 

 These results show that the substance is chemically allied to the gum 

 kino of commerce. The towai is the Weinmannia sylvicola, and is closely 

 allied to the tree that affords that gum, so that their value is about equal. 



6. " On the "Water from the Whangaehu Eiver, Onetapu, Auckland," by 

 "W. Skey. 



The "Whangaehu Eiver rises from within a few yards of the source of the 

 "Waikato, on the eastern slopes of Euapehu Mountain, in the interior of the 

 North Island, and flows into the sea south of the "Wanganui Eiver. Its 

 waters are intensely bitter, and of a milky colour for many miles from the 



