A 



JOURNAL 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND 



THE ART S. 



APRILy 1806. 



ARTICLE I. 



Later from T. Young, M. D. F. R. S. Sfc. claiming the La?np 

 defcribed in our lafi Number, and deinanding an Explanation 

 frotn the anonpnous Communicator. 



To Mr. NICHOLSON. 

 SIR. 



JL WAS much fur prized on feeing, a few days ago, the figure Concerning the 

 of a lamp contained in the fourth plate of your Number for i^^*^"'^'°" °^* 

 February laft. I truft you will be convinced, upon inrpedion 

 of the figure which I now fend you, and which was engraved 

 before Chriftmas, that your correfpondent A. F. muft have 

 copied his lamp from that which is here reprefented ; and I 

 Sim Aire you will think I have a right to demand a public ex- 

 planation of the manner in which he procured a fight of a 

 plate not yet publiflied, and of the motives which induced 

 him to make fo unjuftifiable a ufe of it, I fhall referve the 

 complete explanation of this lamp for the work to which the 

 plate belongs, which has been long in the prefs, and which 

 will foon be ready for publication j I (hall only obferve that 

 Vol. XflL—ApRii., ISOa. X it 



