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1 correction by inkywhiteghost - Show corrections

=^=-I

. . ? ROYAL SOCIETY.

A meeting of members of tho Eoyal Soaetjti

¡Sen South Wales was hold at the society« roo«» lost evening, Professor lhrelfall president Ott« socioty, occupying tho chair There w«»f«

attendance , ...... ,j

Tho following gentlemen wero balloted for«» elected mombcrs of tho society -Horn, aaa Ambroso Huut Gcoigo Henry liowney, A MI W. and Arthur William Tooth Mr W Bddra ¡spencer M A , professor of biology in the uninw ot Melbourne was unanimously admitted »» honorary metnboi ,,

Professor Liversidge road a paper "On the Occurrence of Gold in Hawkesbury Sandstone". He had in 1892, commenced a systematic examinatio of the sandstone and shale about   Sydney for the occurrence of gold. The Hawkes- bury sandstone and Waianamatta shale was, of course, derived from older and pro- bably gold-bearing rocks hence it was not unreasonable to expect to find gold in them. The Hawkesbury sandstone was analagous to a gold- bearing sea beach. The late Rev. W. B. Clarke saw minute specs of gold in quartz pebbles of the sand- stone on tho North Shore, and at Govett's Leap, but   did not consider them of any commercial value. Ten experiments were mad by a student at the University with 5 lb weight of sandstone, but none them contained sufficient gold to pay for extraction. Two other experiments were much more satisfactory. The first was a very ferruginous red sandstone, which assayed 9 dwt. 19 gr. gold per ton of the value of about £2 per ton. Tho second was a pebbly sandstone, assaying 3 dwt 6 gr gold per ton, worth about 13s. Deep red Waianamatta shale, taken from a trench in the University's grounds, yielded

2 dwt. 23. 8 gr gold to the ton worth just under 12s per ton. A nodule of hard ferruginous shale yielded 3 dwt. 13 gr gold to the ton, worth 15s per ton; but this nodule did not represent tho bulk of the shale. Now that the cyanide process would treat tailings at a cost of 3s per ton, it might

be that some of the richer sandstone and shale would be found to pay for the treatment. He had selected the sandstone which showed indications of oxide of ? or which contained quartz pebbles.

Mr H C EUSSEII submitted a paper T »Ocean Currents" Ho said that his PP"T' so technical that ho would onlv givan «

Uno of it to tho mooting They «»JT that it was alleged thero was a constant santwr current setting along tho easte n coast of AniOT* A good many j ears ago ho began the T'ecnT .

data to see líowíor they c°»W «.«',?i'Ä ledge that had been already acquired on?T*¡¡¡£ The data given by the Admiralty «as wry un*w factory Some officers «aid that the curren: n» con.tantly to tho south but that about: 50 mu«

GO mues off tho dist tho current set to the nora.

willi» another authority .«WffrÄw south during Bummer and north du"°R__!__.ngh Tho facts [^brought before hem ««" »««¿SÇ

to eettlo the matta but meroly added more a»« thotr present knowledge

Tho papers wero followed by dm»«»»» Mg Thoonly other sub)ert submitted to.thenwwj was on 'Three Standard Thermometers, VI «? chairmau, and the proceedings then closet.

Digitisation generously supported by
Vincent Fairfax Family Foundation
Digitisation generously supported by

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