174 Proceedings of Societies. 



James Skene, Esq. Curator of the Museum. 

 PhysUal Class. 

 Alexander Irving, Esq. President. 

 John Robison, Esq. Secretary. 

 Counsellors. 

 Sir William Arbuthnot, Bart. Dr Home. 

 James Jardine, Esq. Professor Wallace. 



Sir William Forbes, Bart. Dr Edward Turner. 



Literary Class. 

 Henry Mackenzie, Esq. President. 

 P. F. Tytler, Esq. Secretary. 

 Sir William Hamilton, Bart. Sir Henry Jardine. 

 Rev. Dr Lee- Sir John Hay, Bart. 



Right Hon. the Lord Advocate. Dr Hibbert. 

 December 5th. — Mr Henry Mackenzie read a Supplement to his 

 former Paper on Dreams. 



A paper, by the Reverend Dr Fleming, was read, entitled " Observa- 

 tions on the Defoliation of Trees." This paper is printed in the present 

 number, p. 72. 



Dr Turner read a paper on a Method of Detecting Lithia in minerals 

 by means of the Blowpipe, and he exhibited to the meeting the experiments 

 on which it was founded. This paper is printed in the present number, 

 p. 113. 



Dr Hibbert read a Notice of certain Remarkable Concretions found in 

 the Sandstone of Kerridge, in Cheshire. One of the very remarkable spe- 

 cimens from that locality was exhibited to the Society. This paper is 

 printed in the present number, p. 138. 



Dr Hibbert exhibited a Specimen of the Vertebrae and Ribs of the 

 Plesiosaurus, a species of gigantic Crocodile lately found at Whitby, and 

 in his possession. 



At this meeting the following gentlemen were elected Ordinary Mem- 

 bers of the Society : — 



John Archibald Stewart, Esq. Younger of Grandtully. 

 James Hall, Esq. Advocate. 

 Sir William Jardine, Bart. 



2. Proceedings of the Society for Promoting the Useful Arts in Scotland. 



March 22, 1825. — There was read a Description of Mr Whitelaw's 

 New Compensation Pendulum. 



A letter from Mr John Gibb, Civil Engineer, to John Robison, Esq. 

 was read, " On the Application of Granite to the Construction of Rail- 

 ways. See this Journal, No. v. p. 152. 



Models of a Fire Engine and a Fire Escape, by Mr Walter Bal- 

 iantyne, were exhibited. 



April 5th. — A Description of an Improved Rain-Guage, by Mr Thom 

 of Rothesay, was read, and the instrument itself exhibited. 

 A Notice of a Method of Extinguishing Fires, was read by Major Alston. 



