Haivke Bay Philosophical Imtitiite. 569 



both ports, and there is no reason why it should not be sent home also viS Sydney and 

 Melbourne. 



Assuming that it could bo shipped in New Zealand as ballast at from £2 to £3 per 

 ton, the only expense after that would be discharging it in London into the colliers for 

 Newcastle as ballast, the expense of which is 5s. per ton. This would leave a very 

 good return to the shipper. 



The second export is Algae, Zoster a marina, or Sea-grass, 



It is found in France, Spain, and the Morocco Coast. In New Zealand it is found 

 in large quantities on the coasts of the North Island. 



It is used in England extensively for stuffing mattrasses, carriages, furniture, etc. ; 

 the demand is unlimited ; the value in Loudon is from £7 10s. to £10 per ton, and more 

 if clean and free from sand. 



The specimen produced is from the vicinity of Auckland. 



Specimens of ores of Manganese, and of the plant Zostera marina, were exhibited by 

 the author. 



A short discussion arose on both of those papers. 



FouETH Meeting. 5th November, 1877. 

 E. Stuart, Vice-president, in the chair. 



The nomination for the election of honorary members of the New Zealand Institute 

 was made in accordance with Statute IV. 



v2 



