CONTENTS. 



XIX. yiN Account of some organic Remains found near Brentford, 

 Middlesex, By the late Mr. William Kirby Trimmer. Cow- 

 municated in a Letter from Mr. James R. Trimmer to the 

 Right Hon. ^/r Joseph Banks, Bart. K. B, P. R. S. p. 131 



XX. On a new Construction of a Condenser and Air-pump. By 

 the Rev. Gilbert Austin. In a Letter to Sir Humphry Davy, 

 LL.B. F. R. S. p. 138 



XXI. On the Formation of Fat in the Intestines of living Animals, 

 By Sir Everard Home, Bart, Presented by the Society for 

 promoting the Ktiow ledge of Animal Chemistry, p. 146 



XXII. On the colouring Matter of the black Bronchial Glands, 

 and of the black Spots of the Lungs. By George Pearson, 

 M. D. F, R. S. p. 159 



XXIII. Experiments on the Alcohol of Sulphur, or Sulphuret of 

 Carbon, By J. Berzelius, M. D. F. R.S, Professor of Che- 

 mistry at Stockholm; flWf/ Alexander Marcet, M.D, F.R.S, 

 one of the Physicians to Guy's Hospital. P- 171 



XXIV. On the Means of procuring a steady Light in Coal Mines 

 without the danger of Explosion. By William Reid Clanny, 

 M. D. of Sunderland. Communicated by William Allen, Esq, 

 F. R. S. p. 200 



XXV. On the Light of the Cassegrainian Telescope, compared with 

 that of the Gregorian. By Captain Henry Kater, Brigade- 

 Major. Communicated by the Right Hon. Sir Joseph Banks, 

 Bart, K.B. P. R.S. p. 206 



