Proceedings of the Royal Society of Edinburgh. 169 
elements. 2. Observations on the Transit of Mercury on the 
3d November 1822, Sir Thomas Brisbane having proceeded to 
Sidney, at the distance of fifteen miles, for the purpose of ob- 
serving it, while Mr Bumker observed it at Paramatta. 3. Ob- 
servations on the Winter Solstice of 1822 ; and, 4. Observa- 
tions of the Comet of Encke during the month of June 1822. 
On the same evening, there was read Remarhs on the Natu- 
ral-Historical Determination of Diallage, by W. Haidinger, 
Esq. 
Professor Wallace read a paper, entitled. Investigation of 
Formidce for finding the Logarithms of Trigonometrical Quan- 
tities from one another ; and also a paper entitled, A proposed 
Improvement in the Resolution of a Case in Plane Trigonome- 
try. 
Nov. 17. Dr Knox read a paper On the Limits of the Retina 
in the Eye of the Sapia loligo. 
Nov. 24. At a General Meeting of the Society, the following 
gentlemen were elected Office-bearers and Counsellors for the 
ensuing year : 
Sir Walter Scott, Bart. President. 
Vice-Presidents. 
Right Hon. Lord Chief-Baron, Lord Glenlee, 
Dr T. C. Hope, Professor Russell. 
Dr Brewster, General Secretary. 
Thomas Allan, Esq. Treasurer. 
James Skene, Esq. Curator of the Museum. 
PHYSICAL CLASS. 
Alexander Irving, Esq. President-. John Robison, Esq. Secretary, 
Counsellors from the Physical Class. 
Sir James Hall, Bart. Robert Stevenson, Esq. 
Dr Kennedy. Sir William Arbuthnot, Bart. 
Rev. Dr Macknight. James Jardine, Esq. 
LITERARY CLASS. 
Henry Mackenzie, Esq. President. P. Tytler, Esq. Secretary, 
Counsellors from the Literary Class. 
Thomas Thomson, Esq. Professor Wilson. 
George Forbes, Esq, Sir William Hamilton, Bart. 
Lord Meadowbank, Rev. Dr Lee. 
Dec. 1. There was read a paper On a Remarkable case of 
Magnetic Intensity cfa Chronometer, by George Harvey, Esq. 
M. G. S., M. A. S. 
