272 
Proceedings of the Royal Society 
3. Measures of certain Radiometer Constants. 
By Professor Tait. 
4. Further Researches on Minding’s Theorem. 
By Professor Tait. 
5. On the Transmission of Sound by Loose Electrical Contact. 
By James Blyth, M.A. 
The following Gentlemen were elected Fellows of the 
Society : — 
John Calderwood, F.I.C., Muirhill, West Calder. 
John Charles Ogilvie Will, M.D., 12 Union Terrace, Aberdeen. 
Monday , 21 st July 1879. 
DAVID MILNE HOME, LL.D., Vice-President, 
in the Chair. 
MAKDOUG ALL-BRISBANE PRIZE. 
The Council having awarded the Makdougall-Brisbane 
Prize, for the biennial period 1876-78, to Professor Geikie, 
for his Memoir “ On the Old Red Sandstone of Western 
Europe,” published in the Society’s Transactions 1877-78, 
which forms one of an important series of contributions by 
Professor Geikie to the advancement of geological science, 
the Medal was presented to him by the Chairman, with the 
following remarks : — 
In accordance with what he was told was the practice on such 
occasions, he would shortly explain, first , the purpose for which this 
particular prize was instituted, and, second , the nature of the memoir 
and work by Professor Geikie for which the prize had been awarded 
to him. 
The purpose of the founder of the prize was to enable the Council, 
every two years, to mark, by conferring it, its high opinion of any 
scientific paper or investigation which might come before it. 
The Council was of opinion that the memoir by Professor Geikie, 
