Proceedings of the Royal Scottish Society of Arts. 379 



those who ai'o blind, was exhibited. By John Alston, Esq. of Rosemouni, 

 Glasgow, Hon. M.R.S.S.A. Thanks voted. (860.) 



PRIVATE BUSINESS. 



I. The following Candidates were balloted for, and elected 

 as Fellows, viz : — 



1. Mr John Neil, brassfounder and gasfitter, 10 George Street. 



2. James Denham, Esq. Assistant- Clerk of Session, 3 West Lauriston 

 Lane. 



llth April 1842.— John Shank More, Esq., F.R.S.E., Vice- 

 President, in the Chair. The following Communications were 

 made :— 



1. On the Action of Water on Lead. By Professor Christison, F.R.S.E. 



2. An experimental Electro-dynamic Apparatus. By George Glover, Esq., 

 F.R.S.S.A., Lecturer on Natural Philosophy, Edinburgh. The Apparatus 

 was exhibited in action. Thanks voted. (891.) 



3. Mr George Tait, advocate, F.R.S.S.A., described the manner in which 

 the effect of fog coming on or going off is produced in a Portable Diorama 

 constructed by him, which was exhibited to the Society in November last. 

 The Diorama was exhibited in operation. Thanks voted, and abstract to be 

 printed. (894.) 



4. Description, with a Drawing, of a Self-acting Damper for regulating the 

 draught of Furnaces. By Mr Robert S. Bum, engineer, 4 Tobago Street. 

 Edinburgh. Referred to a Committee. (886.) 



5. Suggestions, with a Drawing, of an Enclosed Gas Lustre, calculated for 

 better ventilation. By the Rev. James Brodie of Monimail, Associate R.S.S. 

 Arts. Referred to a Committee. (883.) 



C. The Committee on making the arrangements for the pi*oposed Exposi- 

 tion of Electro-Magnetism by Dr Fyfe, for the benefit of Mr Davidson, 9 St 

 Andrew Square, reported. Captain Donaldson Boswall, Convener. 



25M April 1842.— John Shank More, Esq., Vice-President, 

 in the Chair. 



After the minutes were read and approved of, the thanks oF 

 the Society were, on the motion of James L'Amy, Esq., una- 

 nimously voted to Dr Fyfe, for the excellent exposition of 

 Electro-Magnetism, lately given by him at the request of the 

 Society ; which were given to Dr Fyfe from the Chair. The 

 following Communications were then made : — 



1. On the Consumption of Smoke and Economy of Fuel by th6 use of 

 Steam, in the patent process of Ivison. By Andrew Fyfe, M.D., F.R.S.E., 

 F.R.S.S.A. 



2. Description, witli Drawing, of a new Water-wheel. ]^y Mr James 

 Wight, Manager of the Water of Leith Mills. A working Model was ex- 



