Proceedings of the Societj/ of ArtK. 429 



List of Prises for Session 1839-40. 



The Society for the Encouragement of the Useful Arts in 

 Scotland, announce the following Prizes for Session 1839-40. 



I. For the most important Invention, Discovery, or Improvement 

 in the Useful Arts ; — The Keith Medal, value Twenty Sovereigm. 



II. For the best Essay, to be lodged betwixt and 1st Novem- 

 ber next, on the most improved manner of laying Rails on Railways, 

 — the most Improved form of Rails, — and the best width of Gauge ; 

 — The Society's Gold Medal, value Twenty Sovereig7is. 



III. The Society proposes also to expend the sum of Eighty 

 Sovereigns, in various Pecuniary Prizes, and Honorary Medals, in 

 rewarding approved Communications on the subjects hereafter men- 

 tioned, — and likewise on any other Inventions or Improvements 

 which may be submitted to them, — and for Essays or detailed Ac- 

 counts of Public or other Undertakings of great National impor- 

 tance, not previously published. 



1. For the best series of Experiments applicable to the Useful 



Arts. 



2. For the most important Communication of any useful Li- 



vention, Process, or Practice from foreign countries, not yet 

 known or adopted in Great Britain. 



3. For the best set of Experiments on the Consumpt of Fuel by 



Locomotive Steam-Engines. 



4. For the best series of Experiments on the Comparative 



Economy, Comfort, and Safety as regards health, of Stoves 

 for heating apartments. 



T>. For an account of a new and improved method of ascertaining 

 Degrees of Temperature too high to be indicated by Common 

 Thermometers ; with a view to enable Founders, Bakers, 

 and others who employ fire heat, to conduct their respective 

 processes with gi-eater certainty. 



C. For the best series of Experiments on Photographic Drawing, 

 particularly as to the Preserving and Multiplying of the im- 

 pressions. 



General Observatioiis. — All communications shall be entitled to 

 compete for the Keith ]\Iedal whicli comply with the terms of the 

 announcement of that Prize, although tiiUing under any of the above 

 specified subjects. 



The descriptions of the various inventions, &c. to be full and 



VOL. xxvn. xo. Liv. — orxoHKR 1830. rf 



