Proceedings of the Societi/ of ArU, 511 



with a Description and Plate of the Apparatus. Presented by Richard 

 Hunter, Esq., Vice-President. (721.) Thanks voted. 



13. Donation. — Notice of Experiments made in August 1839, on the 

 comparative merits of Mr Rcnnie's Conoidal Propeller, and the Screw 

 Propeller used on board of the Archimedes. Presented by Richard Hun- 

 tor, Esq., V.P. (097.) Thanks voted. 



14. Donation. — Notice of the Patent Trapezium or Trapezoidal Paddle- 

 Wheel, and of the results of Mr Rcnnie's experiments with it and the 

 Common Paddle- Wheel. Presented by Richard Hunter, Esq., V.P. (696.) 

 Thanks voted. 



16. Donation. — Transactions of the Society for the Encouragement of 

 Arts, &c., London, during Session 1838-9. Vol LII. Part II. Presented 

 by that Society. (730.) Thanks voted. 



16. Donation. — Two Coloured Prints of the Archimedes Screw Steamer. 

 Presented by F. P. Smith, Esq., the Patentee. (733.) The thanks of 

 the Society were voted to Mr Smith, and to Captain Chappel, R.N., who 

 commands the Archimedes, for their kindness in inviting so many of the 

 members of the Society on board of that Steamer, in her experimental 

 cruises in Leith Reads ; and the good wishes of the Society for Mr Smith's 

 continued and increasing success in this meritorious undertaking. The 

 thanks were given from the Chair. 



17. Memorandum by Robert Stevenson, Esq., civil- engineer, M.S.A., 

 relative to the Archimedes Steamer, on a trip from Leith, on 30th June 

 1840, was read. (734.) Thanks voted. — A good deal of interesting dis- 

 cussion then toak place on the subject of the propulsion of vessels by 

 means of the Screw acting entirely under water, in which Mr Smith, Mr 

 Stevenson, Mr Sang, and others, took part. 



On the motion of Sir John Graham Dalyell, the President, 

 seconded by David Maclagan, M.D., Vice-President, the So- 

 ciety, by acclamation, conferred upon F. P. Smith, Esq., of 

 tlie Archimedes Screw Steamer, tlie distinction of Honorary 

 Member, which being announced to him from the Chair, Mr 

 Smith made an appropriate reply, in the course of which he 

 bore testimony to the very polite attention he had received in 

 Scotland, wherever he had touched in the course of his voyage. 



In terms of Law XX. a Committee of Twelve Ordinary 

 Members was appointed as a Prize Committee, for the purpose 

 of awarding the Prizes for Communications made during the 

 current Session. 



The President then delivered an excellent valedictory ad- 

 dress, and adjoiurned the Society to the Second Monday of 

 November next ; but with liberty to hold a meeting for Private 

 Business in the course of the present month. 



