Hawke Bay Philosophical Institute, 569 
both ports, and there is no reason why it should not be sent home also viá Sydney and 
Melbourne. ; 
Assuming that it could be 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 Algæ, Zostera 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 London 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. 
Fourto Merrtine. Sth November, 1877. 
R. 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. 
