PREFACE. 



HE Authors of Original Papers and Communications 

 in the present Volume are^ Aletes; William Ramsey; 

 John Gough^ Esq.; Hydrophilus; James Parkinson; 

 11. B. ; Tyro; Apsophus; Sir George Cayley, Bart,; 

 Mr. Robert Harrup; O. N.; Thomas Young, M. I>. 

 F. R. S. 



Of Foreign Works^ Henry Braconnot; Mr. West- 

 rumb; M. Berthollct, Jun.; M. Gueniveau; Mr. Ami 

 Argand; M. Regnier; P. F. G. Boullay; M. D'Arcet; 

 Dr. Henry; F. Link; M. Placidus Heinrich; M, Zacharj 

 Nordmark; M. Olbers; M. Gehlen; M. Berzelius; 

 M. Eckeberg; M. Allaire; Baron von Zois; M. Guyton; 

 n. A. Vagel; Bouillon Lagrange; M. Haquet; J. C. De- 

 lametherie; M. Eiot; C. A. Prieur; M. Descotils; M. 

 Thenard; *T. F. Daiibuisson; Dr. Veau-de-Launay; John 

 Ma^ltz; General Mcrriweather; Dr. Baoonio; Professor 

 Proust; F. Berger, M. D,; L. Juririe; M. L Fremy; 

 M, Du Pontde Nemours; M. deVincens; C. R. Jousselin; 

 Mr. J. M. Haussmann; Philip Antony Steinacher; Mr. 

 J. B. TrommsdorlF; Mr. Klaproth, 



And of British Memoirs abridged or extracted, John 

 Bostock, M D.; Mr. Argand; Thomas Young, M. D. ; 

 John Maher, F. H. S.; Sir Joseph Banks, Bart. K. B. 

 P. R. S.; Thomas Andrew Knight, Esq. F.R. S.; Mr. 

 R. Sahnon; Mr. John Prior; Rev. James Hall; Humphry 

 Davy, Esq. F.R. S. M. R.LA.; Mr. Benjamin Stott. 



The Engravings consist of L Capillary Action of Fluids, 

 by Aletes; 2. Boullay^s Apparatus for Phosphoric Ether; 

 3. Mr, Gough's Chamber Barometer; 4. The Proteus Aii- 

 guirjtis; 5, Mr. Maher's Blanching Pot ; 6. Three Repre- 

 sent ationSj^ of the Sacro Catino; ?. Universal Tide Table; 

 8. General Table of Lunations; 9. Mr. R. Salmon's Geo- 

 metrical Quadrant and Staff; 10. Mr. Jolln Prior's Larura 

 for Pocket Watches; II. Structure of Covered Ways; 12. 

 Sir George Cayley's Expansion Air Engine; 13. Mr. Stott's 

 Engine for splitting Sheep Skins. 



TABl/E 



