A Letter on the Differences in the Structure of Calculi, which arise 

 from their being formed in different Parts of the Urinary Passages ; 

 and on the Effects that are produced upon them, hy the internal Use 

 of solvent Medicines, from Mr. William Brande to Everard Home, 

 Esq. F.R.S page 303 



Some Observations on Mr. Brande 's Paper on Calculi. By Everard 

 Home, Esq. F.R.S 305 



On the Changes produced in Atmospheric Air, and Oxygen Gas, by 

 Respiration. By W. Allen, Esq. F.R.S. and W. H. Pepys, Esq. F.R.S. 305 



Description of an Apparatus for the Analysis of the Compound In- 

 flammable Gases by slow Combustion ; with Experiments on the 

 Gas from Coal, explaining its Application. By William Henry, M.D. 309 



An Account of some Peculiarities in the anatomical Structure of the 

 Wombat, with Observations on the female Organs of Generation. 

 By Everard Home, Esq. F.R.S 310 



On the Origin and Office of the Alburnum of Trees. In a Letter from 

 Thomas Andrew Knight, Esq. F.R.S. to the Right Hon. Sir Joseph 

 Banks, Bart. K.B. P.R.S 311 



Eclipses of the Satellites of Jupiter, observed by John Goldingham, 

 Esq. F.R.S. and under his Superintendance, at Madras, in the East 

 Indies 312 



Electro-Chemical Researches on the Decomposition of the Earths ; 

 with Observations on the Metals obtained from the alkaline Earths, 

 and on the Amalgam procured from Ammonia. By Humphry Davy, 

 Esq. Sec. R.S. M.R.I.A 313 



1809. 



The Croonian Lecture. On the Functions of the Heart and Arteries. 

 By Thomas Young, M.D. For. Sec. R.S page 314 



An Account of some Experiments, performed with a View to ascertain 

 the most advantageous Method of constructing a Voltaic Apparatus, 

 for the Purposes of Chemical Research. By John George Children, 

 Esq. F.R.S 317 



The Bakerian Lecture. An Account of some new analytical Researches 

 on the Nature of certain Bodies, particularly the Alkalies, Phos- 

 phorus, Sulphur, Carbonaceous Matter, and the Acids hitherto unde- 

 compounded ; with some general Observations on Chemical Theory. 

 By Humphry Davy, Esq. Sec. R.S. F.R.S. Ed. and M.R.I.A 318 



An Account of a Method of dividing Astronomical and other Instru- 

 ments, by ocular Inspection ; in which the usual Tools for gradua- 

 ting are not employed ; the whole Operation being so contrived, that 

 no Error can occur but what is chargeable to Vision, when assisted 

 by the best optical Means of viewing and measuring minute Quan- 

 tities. By Mr. Edward Troughton 323 



A Letter on a Canal in the Medulla Spinalis of some Quadrupeds. In 

 a Letter from Mr. William Sewell, to Everard Home, Esq. F.R.S. 325 



A numerical Table of elective Attractions; with Remarks on the Se- 

 quences of double Decompositions. By Thomas Young, M.D. For. 

 Sec. K.S 325 



