Proceedings of the Society of Arts. 421 



paintings, and also to take etchings from the images given by the camera 

 obscura. Specimens of the etchings were shewn, 



Dr Fyfe afterwards exhibited specimens of Photographic impressions, 

 taken on pannell board by the phosphate, and also on copper, by the lat- 

 ter of which he stated, that the labours of engravers would in future be 

 much diminished. He also explained an important practical application 

 of the Photographic process to lithography, by which lithographers were 

 not put to the trouble of tracing the object to be taken on the transfer 

 paper. Lithographic specimens made in this way were exhibited. 



Thanks voted to Dr Fyfe, who was requested to give in writing the re- 

 sults of his experiments. 



Dr Douglas Maclagan also exhibited specimens taken by him ; and 

 another gentleman stated, that he had taken impressions on cloth, and 

 afterwards washed out the remaining solution of silver. 



3. Notice of a new method of re-shipping a Rudder at Sea. By Mar- 

 tyn J. Roberts, Esq. of Bryn-y-Caerau, Wales, Cor. Memb. R.G.S. of 

 Cornwall, M.L.G.S., &c. India Street, Edinburgh. A model was exhi- 

 bited. (618.) Referred to a Committee. 



4. Suggestions of Improvement in Cloth Binding, from practical expe- 

 rience. By Mr William Bulloch, North Bank Street, Edinburgh. 



A Model of the Sliding Frame and Moveable Stamp were exhibited. 

 (629.) Referred to a Committee. 



5. Donation. — Transactions of the (London) Society for the Encourage- 

 ment of Arts, Manufactures, and Commerce, during Session 1837-8. 

 Vol. LII. Part. I. From the Societj-. (634.) Thanks voted. 



6. Read and approved the Experimental Committee's Report upon 

 Dr Davidson's Papers : 



1. On Adulteration of Fixed Oils. (554.) 



2. On Decolorization of Palm Oil. (555.) 



3. On removing the Fetid Odour of Fish Oils. (56G.) 



4. On removing the Bitter Taste and Lichenous Odour of Iceland 

 Moss, &c. (567.) 



The following Candidates were admitted as Ordinary Mem- 

 bers, viz. : — 



1. Henry Edward Dibdin, Esq., 72 Northumberland Street ; 2. John 

 Spencc, Esq., 50 Great King Street ; 3. Mr William Casey, Castle Mills, 

 Fountainbridge ; 4. Mr Thomas Ellis, Cliarles Street. 



VJth April.— DdiYid Maclagan, M.D., F.R.S.E,, C.S.A. in 

 the Chair. The following communications were laid before 

 the Society: — 



1. Notice of recent improvements effected* by him in Photographic 

 Drawing, &c. whereby the lights and bhadow8 arc not reversed. By An- 



