IX 



On two Metals, found in the black Powder remaining after the Solu- 

 tion of Platina. By Smithson Teimant, Esq. F.R.S page 161 



On a new Metal, found in crude Platina. By William Hyde Wollas- 

 ton, M.D. F.R.S 162 



1805. 



The Croonian Lecture, on Muscular Motion. By Anthony Carlisle, 

 Esq. F.R.S page 163 



Experiments for ascertaining how far Telescopes will enable us to 

 determine very small Angles, and to distinguish the real from the 

 spurious Diameters of celestial and terrestrial Objects : with an 

 Application of the Result of these Experiments to a Series of Ob- 

 servations on the Nature and Magnitude of Mr. Harding's lately 

 discovered Star. By William Herschel, LL.D. F.R.S 166 



An Essay on the Cohesion of Fluids. By Thomas Young, M.D. For. 

 Sec. R.S 171 



Concerning the State in which the true Sap of Trees is deposited during 

 Winter. In a Letter from Thomas Andrew Knight, Esq. to the 

 Right Hon. Sir Joseph Banks, Bart. K.B. P.R.S 172 



On the Action of Platina and Mercury upon each other. By Richard 

 Chenevix, Esq. F.R.S. M.R.I.A. &c 175 



An Investigation of all the Changes of the variable Star in Sobieski's 

 Shield, from five Years' Observations, exhibiting its proportional il- 

 luminated Parts, and its Irregularities of Rotation ; with Conjectures 

 respecting unenlightened heavenly Bodies. By Edward Pigott, Esq. 180 



An Account of some analytical Experiments on a mineral Production 

 from Devonshire, consisting principally of Alumine and Water. By 

 Humphry Davy, Esq. F.R.S 181 



Experiments on Wootz. By Mr. David Mushet 183 



Abstract of Observations on a diurnal Variation of the Barometer be- 

 tween the Tropics. By J. Horsburgh, Esq 185 



Concerning the Differences in the magnetic Needle, on Board the In- 

 vestigator, arising from an Alteration in the Direction of the Ship's 

 Head. By Matthew Flinders, Esq 187 



The Physiology of the Stapes, one of the Bones of the Organ of Hear- 

 ing ; deduced from a compavative View of its Structure and Uses in 

 different Animals. By Anthony Carlisle, Esq. F.R.S. 188 



On an artificial Substance which possesses the principal characteristic 



Properties of Tannin. By Charles Hatchett, Esq. F.R.S 190 



The Case of a full-grown Woman in whom the Ovaria were deficient. 



By Mr. Charles Pears, F.L.S 191 



A Description of Malformation in the Heart of an Infant. By Mr. 



Hugh Chudleigh Standert 195 



On a Method of analysing Stones containing fixed Alkali, by Means of 



the Boracic Acid. By Humphry Davy, Esq. F.R.S 196 



On the Direction and Velocity of the Motion of the Sun, and Solar 



System. By William Herschel, LL.D. F.R.S 197 



On the Reproduction of Buds. By Thomas Andrew Knight, Esq. F.R.S. 200 

 Some Account of two Mummies of the Egyptian Ibis, one of which was 



in a remarkably perfect State. By John Pearson, Esq. F.R.S. . . 201 



