ADVERTISEMENT. 



X HE Authors of Original Papers iri the present Volume, 

 are Joseph Huddart, Esq. F. R. S. ; John Dalton ; Everard 

 Home, Esq. F. R. S. ; Mr. John Gough ; Robert Briggs, 

 M. D. ; Mr. Ezekiel Walker; Mr. John Farcy; Mr. Fre- 

 derick Accum; Sir A. N. EdelcrantZ; Richard Chenevix, 

 Esq. F. R. S. and M. R. LA.; Mr. R. Winter; Mr. 

 James Stodart; Mr. T. Jones; W. H. Woollaston, M. D. 

 F. R. S.; J. M. Elliott; Mr. William Close; Mr. W. 

 Jones, F. Am. P. S.; C.Wilkinson, Esq.; Mr. J. C. 

 Hornblower ; Mr. J. J. Hawkins ; I. R. I. ; Mr. 

 Sharpies; B. 



Of Foreign Works, J. H. Hassenfratz; Thenard; C. L. 

 Cadet; J. B. De Roover; M. L.* Schnaubert; Professor 

 Proust; Klaproth; Count de Bournon; Brugnatelli; Ritter; 

 Benzenberg; S. P.; Bouvier; Wolff; Dyckhoff; J. B. 

 Van den Sande ; Berthollet. 



Of English Works, abridged or extracted; Rev. Richard 

 Yates, F. R. S. ; Mr. Tho. Willis ; John Playfair, F. R. S.; 

 S. H. C. Englefield, Bart. F. R. S. ; William Herschel, 

 t. L. t). F. R. S!; T. S. Dyot Bucknal, Esq. M. P. ; Ben- 

 jamin Smith Barton, M. D. ; John Stockwell, Esq. ; Mr. 

 John Cowie. 



Of Engravings the Subjects are, 1. Station Pointer for de- 

 termining the precise Situation of a Ship or Vessel from two 

 Horizontal Angles, by Joseph Huddart, Esq. F. R. S. 2. 

 Mr. Dalton's Scheme for shewing the Distribution of the 

 Particles in Mixed Gases. 3. Diagram to shew the Method 

 «f constructing and computing the Situation of an Observer 



from 



