Proceedings of the Society of Arts. 427 



(6.) On Mr Baillie's Frame for cleaning Windows. Mr Wright, 

 Convener. (689.) 



Zd July. — Sir John Graham Daly ell, Kt., President in the 

 Chair. The following communications were laid before the 

 Society: — 



1. Additional Verbal Remarks on Photography. By Andrew Fyfe, 

 M. D.,F.R.S.E., V.P.S.A.— Thanks voted. (658.) 



2. Farther Verbal Notice and Model of a perfect Parallel-motion ap- 

 plied to the Marine Steam-Engine. By John Scott Russell, M.A., F.R.S.E., 

 V.P.S.A.— Thanks voted. (665.) 



3. Notice of Palmer's improved Table Lamp, which is said to give a 

 better and steadier light with common Whale Oil than is given by the 

 common Lamp with Sperm Oil. By James Tod, Esq. Secretary. (661.) 



A Drawing was exhibited. — Thanks voted. Dr Ure has stated that his 

 lamp bums well for fourteen hours, and gives light equal to eleven wax 

 candles, three to the lb. 



4. Model and Description of his Patent process of generating Steam by 

 means of a heated medium. By George Goodlet, Esq. Leith. — Thanks 

 voted. (669.) 



5. Verbal Notice of a substitute for the Fly- Wheel in Steam Engines. 

 By William Buckle, Esq. Soho. Communicated by John Scott Russell, 

 M.A., F.R.S.E., V.P.S. A.— Thanks voted. (591.) 



6. Model and Description of a Tool for setting Saw Teeth. By Mr 

 James Ormiston, Wright (with Mr Beresford, Macbiehlll,) Peeblesshire. 

 Communicated by Robert Maxton, Esq. M.S.A. — Referred to a Commit- 

 tee. (660.) 



7. The following Reports of Committees were read and approved of, 

 viz. — 



(1.) On Mr Hope's Expansion Railway. Mr D. Stevenson,' Conve- 

 ner. (584.) 



(2.) On Mr Roberts' Assaying by Galvanism. Mr Ponton, Con- 

 vener. (611.) 



(3.) On Mr Meiklejohn's Railway-crossing. Mr R. Hunter, Con- 

 vener. (612.) 



(4.) On Mr Hope's Method of increasing and diminishing the dis- 

 tance of the Floats from the centre of the Common Paddle- 

 Whcel. Mr Scott Russell, Convener. (683.) 



(6.) On Mr Whitelaw's mode of working the Valves of the Steam- 

 Engine. Mr Sang, Convener. (619.) 



(6.) On Mr Whitelaw's new Universal Joint. Mr Sang, Convener. 

 (620.) 



(7.) On Mr Whitelaw's Improved Friction Cones. Mr Sang, Con- 

 vener. (G21). <i^ 



