HE Authors of Original Papers and Communications In the
present Volume are Sir George Cayley, Bart.; Mr. Acton;
Mr. Robert Lyall; T. L. N.; W. Henry, M. D.; A. M.; N.;
Mr. T. Sheldrake; T. Le Gay Brewerton, Esq. F. R. Phys S. Edin.;
Mr. P. Barlow; Francis Ellis, Esq.; W. N.; G. O.; A. B; J. Bos-
tock, M. D.; J. F.; C.; Mr. R Winter; G. Cumberland, Esq.;
T. Forster, Esq.; L. O. C; Mr. B. Cook; Rev. J. Blanchard;
Dr. Clarke; J. Gough, Esq.
Of Foreign Works, M. Modeste Pareletti; M. Bucholz; M.
Hassenfratz; M. Vauquelin; M. Klaproth; M. Robiquet; M.
C. L. Berthollet; M. Guyton-Morveau; Prof. Proust; M. Coutelle;
Dr. Haldat; J. B. Mollerat; Mr. W. Maclure, F. Phil. Soc. of
Philadelphia; M. Descroizilles, Senr.; B. L; M. Laugier; M.
Fourcroy; M. Theodore de Saussure; M. Prieur; M. J. C. Dela-
metherie; M. Parmentier; M. Theodore de Grotthuss; M. Pey-
rard; M. Gehlen.
And of British Memoirs abridged or extracted, Mr. Edward
Troughton; W. Hyde Wollaston, M. D. Sec. R. S.; T. A. Knight,
Esq. F. R. S.; H. Davy, Esq. Sec. R. S. Prof. Chem. R. I.;
Everard Home, Esq. F. R. S; Mr. W. Brande; G. Pearson, M. D.
F. R S.; J. Miller, Esq.; W. Allen, Esq. F. R. S.; W. Hasledine
Pepys, Esq. F. R. S.; Lieut. James Spratt, R. N.; Richard
White Esq.; Mr. R. Porrett, jun. ; Capt. W. Bolton, R. N.; Rev.
W. Gregor.
The Engravings consist of 1. Figures 1, 4, 5, 6, and 7, (in
one Quarto Plate) of Mr. Troughton's Apparatus for dividing
Astronomical Instruments; 2. Figs. 2 and 3, of Mr. Troughton's
Apparatus for dividing Astronomical Instruments; 3. Diagrams
illustrating the Art of Aerial Navigation, by Sir George Cayley,
Bart; 4. Leaf of the Mimosa Pudica, by Mr. Robert Lyall; 5. Sir
George Cayley on Aerial Navigation; 6. Apparatus for procuring
Potassium; 7. Dr. Wollaston's reflecting Goniometer; 8. The In
tervertebral Joint of the Shark; 9. Mr. Miller's Drag for finding
and raising the Body of a Person drowned; 10. His Reel Safe-
guard, for the Security of a Person going to the Assistance of one
Drowning; 11. His Missile Rope to be flung to a Person in Danger
of being drowned; 12. Apparatus of Messrs. Allen and Pepys, for
the Respiration of Gasses by Animals; 13. Lieutenant Spratt's
Homograph; 14. Mr. White's improved File for Letters, Receipts,
&c.; 15. Diagrams illustrative of certain Properties of Solids, by
John Gough, Esq.; 16. Capt. W. Bolton's Method of rigging his
Jury Mast, and setting up a Ship's lower Rigging.