404 Proceedings. 



" On the Kennedy Bay side — \st Section is a coarse granular, or sub- 

 crystalline rock, light in colour, and containing pyrites, but weathering freely 

 to a dark brown. On the west side of this band of rock are two quartz veins, 

 5 and 3 inches respectively, trending north-east, and underlying to the west 

 at 20°. 



'' The samples of these sent gave at the rate of 28 grains per ton of gold. 



" 2nd Section and 3rd Section. — Very compact felstone, or indurated 

 claystone full of pyrites in large masses and crystals. 



" A glance at the suite of specimens submitted shows that, while there is 

 considerable variety in the rocks cut through in the tunnel, after passing 

 the 3rd section of 300 feet from the west end they all belong to the same 

 group. The presence of carbonate of lime in large quantities, both as a 

 constituent of the hardest and densest parts of the i-ock, and as secondary 

 deposits in veins, is very interesting, and shows that, even if these rocks had at 

 first a volcanic origin, as has been supposed, they have since undergone much 

 alteration. The marked change at 300 feet, and the presence in the rock at 

 section 3 of rolled fragments of the. more interior rock, is sufficient proof of 

 the existence of two formations belonging to different periods. 



" All the rocks will be exhaustively analyzed and microscopically examined, 

 so that the fullest benefit to science may be obtained from this most interesting 

 work." 



2. " On the Probability of a "Water Supply being obtained for the City of 

 Auckland from Mount Eden," by J. Goodall, CE. [Transactions, p. 35.) 



An animated discussion ensued. 



3. " On the Prediction of Occultations of Stars by the Moon," by T. 

 Heale, C.E. (Transactions, p. 57.) 



Mr. T. B. Gillies was chosen to vote in the election of the Board of 

 Governors for the ensuing year, in accordance with Clause 7 of the New 

 Zealand Institute Act. 



Seventh Meeting. Wi December, 1873. 

 New members. — Sir G. A. Arney, Chief Justice of New Zealand, T. 

 Spencer, G. E. Edmonstone, A. Clark, J. E. Allen, J. Kobertson. 



The Secretary read the list of donations to the Library and Museum. 



The Secretary stated that a complete set of rock specimens from the 

 Tokatea Tunnel would eventually be placed in the Museum. 



1. " On the Probability of a Water Supply being obtained for the City of 

 Auckland from Mount Eden" (continued), by J. Goodall, C.E. [Transactions, 

 p. 39.) 



