“a 
CO EOTIN it BileagBlen aIN ec be Se 
1. EXPERIMENTS on the Alkaline Subftances ufed in 
Bleaching, and on the Colouring Matter of Linen-Yarn. 
By Richard Kirwan, Efg, F.R.S. and M.R.I. A. - Page 3 
Tl. Letter from Richard Kirwan, Eq, F.R.S. and 
M.R.I. A. to the Right Honourable the Earl of Charle- 
mont, PRL. A. - - - - - 49 
III. The Origin and Theory of the Gothic Arch. By the 
Reverend M. Young, D.D. F.T.C.D. and M.R.1.A. aig 
IV. An Account of a Difeafe which, until lately, proved 
Satal to a great Number of Infants in the Lying-in 
Hopital of Dublin, with Obfervations on tts Caufes and 
Prevention. By Fofeph Clarke, M. D. Mafter of the 
Hopital above-mentioned, and M.R.1. A. - - 89 
V. Defeription of a Steam Engine. By Fohn Cooke, Eq; 
MRL A. - - - - - FEY 
B Vi. 
