Proceedings of the Society of Art9* 413 



ing of boilers on the Clyde, the trustees of that river had been led to offer 

 prizes for the best essay on the subject of their prevention. Ho believed 

 that the whole of the principal papers thus obtained, or at least abstracts 

 properly classified, were printed in the report now presented. (747.) 

 Thanks voted. 



(3.) The " Inventors' Advocate," No. G3, London, 10th October 1840. 

 Presented by the publishers. (748.) Thanks voted. 



The following gentlemen were elected Ordinary Members, 

 viz. — 



1. Mr Peter Wright, linen-merchant, 19 Queen Street. 2. Mr Alex- 

 ander Keith Johnston, engraver, 7 Charlotte Street, 3. Mr Peter Ste- 

 venson, phil. inst. maker, 9 Lothian Street. 4. Lieut-Colonel Sir William 

 A. Maxwell, Bart, of Calderwood. 5. William Walker, Esq. surgeon, 

 47 Northumberland Street. 6. N. Maxwell, Esq. late Bengal Medical 

 Staff, U.S. Club, Edinburgh. 7. George Harvey, Esq. U.S.A., historical 

 painter, 15 Brunswick Street, Hillside. 8. Drysdale Carstairs, Esq. 23 

 Iloyal Terrace. 9. Mr C. H. J. Smith, landscape-gardener, 11 Elder 

 Street. 10. Andrew Dun, Esq. W. S., 30 London Street. 



11th January 1841.— Andrew Fyfe, M.D., F.R.S.E., Pre- 

 sident, in the chair. The following communications were 

 made : — 



1. Model and Description of Apparatus for saving the life of persons 

 falling into any loch or standing water, on the ice giving way. By Mr 

 Gavin Kay, 18 Preston Street, Newington, Edinburgh. (757.) Keferred 

 to a Committee. 



An interesting discussion followed upon this subject, which was carried 

 on by Dr Glover, Mr Sang, Dr Maclagan, and others ; and on the motion 

 of Mr L'Amy, one of the vice-presidents, Dr Glover was requested to give, 

 in writing, his valuable practical observations, in order to their being 

 printed and published for the use of persons frequenting the ice. 



2. Description of an Instrument for indicating the amount of inclined 

 disturbances during small Shocks of Earthquakes. By Alexander Rose, 

 Esq., Lecturer on Geology, &c. Edinburgh, M. S. A. 



An acting model was exhibited. (767.) Thanks voted. 



3. Description and Drawing of a simple but important improvement m 

 the Camera Obscura, in taking portraits and other objects. By Mr Tho- 

 mas Davidson, optician. Royal Exchange, Edinburgh. 



The camera with its improvements was exhibited. (768.) 



4. Description and Diagram of a Method of taking views by Reflection, 

 in the Daguerreotype, or in the common Camera Obscura. By Mr Thomas 

 Davidson, optician, Edinburgh. (770.) 



A discussion followed the reading of these papers, in which Sir John 

 Robison, Dr Hunter, Messrs Sang, Bryson, and others, took part. After 

 VOL. XXXI. NO. LXII. — OCTOBER 1841. O d 



