ADVERTISEMENT. 



T, 



HE Authors of Original Papers In the present Volume, 

 are Mr. Frederick Accum ; Mr. Irwine ^ Sir. A. N. Edel- 

 crantz; Dr. T. C. Hope, F. R. S. Edinburgh; Anthony 

 Carlisle, Esq.; M. B. Donkin 5 Mr. Ezekiel Walker j 

 Thomas Thompson, M. D. ; Dr. Boftock ; Mr. Dalton ; 

 Edward Howard, Esq. F. R. S. ; Mr. A. Woolf ; Andrew 

 Duncan, M. D. F. R. S. Edinburgh; Dr. Prince; Mr. 

 J. C. Hornbiower, and Mr. G. Smart. Of Foreign Works, 

 M. Regnier ; Wiegleb ; Guyton ; Curaudau ; Baunach 5 

 Payffe ; Parmentier; Steinacher; Schaub; Nicolai; Bouillon 

 la Grange; Klaproth; Lomet; Tromfdorff; Seguin; Ritteri 

 Thenard ; Vauquelin ; La Place ; Guyton-Morveau ; Von 

 Hombolt ; Raymond ; Berthollet, and Haflenfratz. And 

 of English Memoirs abridged or extra£led, Wm. Her- 

 schell, L. L. D. F. R. S. ; Richard Chenevix, Esq. F. R.S. 

 and M. R. I. A.; Humphry Davy, Esq.; Wm. Hyde Wol- 

 laston, M. D. F. R. S. ; Sir H. C. Englefield, Bart. F. R. S. ; 

 James Smithson, Esq. F. R. S. P. R. I.; Mr. James Woart; 

 William Fairman, Esq.; Charles Hatchett, Esq. F. R.S. ; 

 The Right Hon. C. Greville, F. R. S.; Mr. John Dalton; 

 Everard Home, Esq. F, R. S. ; and Andrew Duncan, Junr. 

 M.D.F. R.S. Edinburgh. 



Of the Engravings the Subjects are, 1. Dr. Young's 

 Apparatus for illustrating the Doctrine of Preponderance. 

 2. Apparatus for Experiments with Spouting-Fluids. 3. A 

 Lock of Combination by M. Regnier. 4. Solar Phenomenon 

 obferved, by Sir H. Englefield, Bart. 5. Figure to fliew the 

 Proportion of the magnified Images of the fame Star at 

 different Times, by Dr. Herschell. 6. Sir A. N. Edelcrantz's 

 Method of Raifing Water in Worm»Tubs, Condensers, &c. 

 7. Eudiometric Apparatus, by Dr. Hope. ^. VefTel for In- 

 closing 



