Proceedings of the 'Royal Scottish Society of Arts. 383 



6. Practical Details of Public or other undertakings of 

 National importance, — not previously published. 



6. Methods of Economising Fuel, Gas, &c. — of preventing Smoke 

 and Noxious Vapours from Manufactories, — of Ventilating 

 Public Edifices, Private Dwellings, Ships, &c.— of construct- 

 ing Buildings on the most correct Acoustic principles. 



7. Improvements in the Manufacture of Iron, and other 

 Metals, simple or alloyed ; in the making and Tempering Steel, 

 — in Ornamental Metallic Casting — in Calotype, Daguerreo- 

 type, and Electrotype, — in the preparation of Lime and Plas- 

 ter for Fresco Painting, and in appropriate Tools for laying 

 the Plaster with precision, — in Electric, Voltaic, and Mag- 

 netic apparatus, — in Pavements, — in Balance or Pendulum 

 Time-keepers, — in Taps and Dies, — in Die-sinking, — in 

 Wood-cutting, — in Printing from Wood-cuts, — in Printing- 

 presses, — in Stereotyping, and in cleaning the plaster from 

 the Types, — in Furnaces and other apparatus used in Stereo- 

 typing, — in Type- Founding, — in the Composition of Printers' 

 Rollers, — in Engraving on Stone, — in Ship-building, with re- 

 gard to Ventilation, both for the crew and the timbers, — in 

 Currying and Tawing of Leather, — in Glass and Porcelain, 

 — in Land, Marine, and Locomotive Steam-Engines and Rail- 

 way Carriages, and particularly in their Axles, — in Rail- 

 way Telegraphs and Signals, — in Smith-work and Carpentry— 

 in Tools, Implements, and Apparatus for the various Trades. 



KEITH PRIZE. 



The Society also proposes to award the Keith Prize, value 

 Thirty Sovereigns, for an important Invention, Discovery, 

 or Improvement in the Useful Arts. 



General Observations. — The Keith Prize may be awaixied 

 for any communication which shall comply with the terms of the 

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

 specified subjects. 



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

 distinct, and, when necessary, accompanied by Specimens , Drawings, 

 or Models. 



The Society shall be at liberty to publish in their Transactions 



