13 
Mr. Edward Hull, F.G.S., exhibited some etchings of 
caves, fissures, and isolated rocks on the coast of Cantyre, 
intended to illustrate three classes of phenomena belonging 
to the raised beach and coast, known as “ the 30-feet beach,” 
from the fact that its mean elevation is about 30 feet above 
the present tides. This raised beach has been described by 
several authors, from Mr. Smith, of Jordan Hill (1836), 
downwards, and is part of the same beach which has been 
traced all along the western coast of Scotland, and the 
vestiges of which remain in a state of remarkable freshness 
to the present day. 
Mr. T. Heelis, F.R. A.S., called attention to the proceedings 
of a scientific commission recently issued by his Highness the 
Viceroy of Egypt, who had succeeded in finding a tertiary 
coal basin in the valleys between Mount Olympus and the 
Bay of Oraniska, in the Gulf of Salonica, and also on the 
mainland of Asia Minor, near the Island of Samos ; and 
mentioned some particulars of the coal there found, such as 
its specific gravity, in which it slightly exceeds the ordinary 
coal of the coal measures, and the results of experiments upon 
its combustion, which give twenty per cent of ash. 
A paper “ On Coresolvents.” by the Honourable Chief 
Justice Cockle, M.A., &c., President of the Queensland 
Philosophical Society, was communicated by the Rev. 
Robert Harley, F.R.S., &c. 
Whatever function X may be of x equation (3) of my last 
paper ( Proceedings , vol. IV., pp. 37 — 40), is reducible to an 
equation with constant coefficients by changing the inde- 
pendent variable as indicated at p. 38 (ibid.'), and the order 
of the symbolical factors of (3) is always indifferent. 
Mr. Harley gives 
3%(2-*)g + 3’(l-*)^ +3 ,= l...(i) 
