460 Proceedings of the Society of ArlH, 



of the above Prizes, — for which they shall be paid an extra sum, to cover th? 

 outlay for paper and printing. The Society of Arts retain to themselves the 

 power of withholding the whole or any part of the above Prizes till a future 

 time, if there be not more than three competitors, or if the Specimens pro- 

 duced do not appear to be of sufficient merit. 



6. For the best Paper on the treatment of Steel in the forming 

 and hardening Tools for different purposes ; — The Society s Silver 

 Medal, value Ten Sovereigns. 



7. For other Inventions, Discoveries, or Improvements in the Me- 

 chanical or Chemical Arts ; or by which the Natural Produciiojis of 

 Scotland could be made more available to the Useful Arts than at 

 present, — the Society will be ready to expend a further sum, in Pre- 

 miums and Honorary Medals, of Ten Sovereigns. 



General Observations. — The attention of Candidates is particularly 

 directed to the following subjects, as a specimen of what the Society would 

 desire to be brought before them ; but Candidates are by no means limited 

 to these subjects, viz. : — Best construction of Screw-plates, Taps and Dies, 

 &c. — Means by which the expense of Diagrams, &c. for Books of Science, &c. 

 may be lessened. — Economizing Fuel, Gas, &c — Observations on correct re- 

 presentations of Natural Objects, for the ornamenting of Ceilings and Walls 

 of Rooms, in the Printing of Cloth, Painting of China and Stone- ware, &c. — 

 Improvements in Balance or Pendulum Time-keepers — On the best Compo- 

 sition for Rollers employed in applying Ink to the Types in Letter-press 

 Printing, especially with a view to preserve their adhesive and elastic pro- 

 perties in as uniform a condition as possible during damp and other variable 

 states of the atmosphere — Steam-boats for Canals, somewhat on the principle 

 of the American Steam-Raft, and capable of sailing at the rate of 15 miles an 

 hour, &c. 



The Society shall be at liberty to publish in their Transactions copies or 

 abstracts of all I'apers submitted to them. 



In the event of any communication not being considered of sufficient merit 

 to entitle it to the whole Prize for which it competes, the Society reserve 

 the power of lessening the Prize. 



The Society particularly request, that all communications intended to com- 

 pete for the above Prizes (except the 4th and 5th Prizes) may be forwarded 

 to the Secretary as soon after the Society meets in November 1 834 as possi- 

 ble, in order to insure their being read and reported on during the Session. 

 At same time, they will be received any time from July 1834 to 1st April 

 1835. 



Communications. Inventions, and Models, to be forwarded to James Tod, 

 Esq. W. S. 21 Dublin Street, Edinburgh, Secretary to the Society; and it is 

 requested, that, in all cases, full descriptions of the Invention may be sent ; 

 and, where the nature of the communication requires it, that there be also 

 sent relative Drawings, Sketches, or Models, so as to enable the Society fully to 

 judge of the merits of the comnmnication. 



RoYAi. Institution, Edinbur&h, 

 'l\st July \\iM. 



