the Useful Arts in Scotland. 345 



April 4. — A Paper " On Vertical Windmills, by Mr James Brodie, 

 Aberdeen, was read. 



Mr Whitela w exhibited an Apparatus for converting a Rectilineal into a 

 Rotatory Motion, and the Rev. Mr Somerville exhibited one of his Patent 

 Safety Guns. See this Journal, No. iv. p. 316, and this Number, p. 337. 



April 18. — The following Communications were made to the Society: — 



1. Practical Observations on Percussion by Mr James Brodie. 



2. A Model of a Railway Carriage by Mr Alexander Adie Junior. 



3. An Idea of a Gunpoioder Engine, by Mr John Henderson. 



4. Plan of an Improved Capillary Steam Boiler by Mr J. Henderson. 

 March 7. — Major Alston read a Notice on the Construction of Chim- 

 neys. 



Dr Brew ster exhibited a Portable Gas Lamp fitted up to produce In- 

 tense Heats. 



Mr James Brodie communicated a description of an Eccentric Com- 

 bination for Obtaining Rotato?y Motion from the Piston Rod of a Steam 

 Engine . 



March 21. — G. S. Menteith, Esq. of Closeburn, read a notice of an 

 Improvement on Limekilns. 



Mr James Brodie communicated a description of a Double Jointed 

 Parallel Motion. 



Dec. 5. — A method of fixing the Glass in Painted Windows, by John 

 Ro bison, Esq. was read. See this Journal, No. xi. p. 50. 



Mr James Nasmyth gave a description of an Improved Pulley. 



Dr Hibbert read a notice respecting the Iron Ore found at Glengary. 



Mr James Nasmyth read a description of a Safety High Pressure 

 Boiler. 



Mr James Nasmyth was admitted an associate member. 



Dec. 19. — Mr Johnson of Hull read a description of a New Steam 

 Coach, and exhibited the model of one in operation. 



Mr Robert Taylor communicated a method of restoring the damaged 

 Canvas of Paintings. 



Dr Hibbert read a notice respecting the native Copper of Shetland. 



Mr James Nasmyth exhibited a model of a High Pressure Steam En- 

 gine in action, with a method of applying the waste steam to increase the 

 temperature of the furnace. 



Mr George Nasymth was admitted an associate member. 



Jan. 9, 1827. — Mr Brown exhibited and explained to the Society his 

 New Weighing Machine. 



Mr Johnson exhibited an Air Gun of a new construction. 

 Jan. 24. — Mr Johnson read an account of a machine for navigating the air. 



Mr James Nasmyth gave an account of a method of preventing the 

 water in steam boilers from becoming too high or too low. 



Feb. 6. — Sir Thomas Makdougall Brisbane, K. C. B. was admit- 

 ted a Member of the Society. 



Mr Nimmo gave a description of a High Pressure Engine with a valve 

 on a new construction. The engine was exhibited in operation. 



There was read an account of an Improvement on Mr Adam's Nautical 



