Proceedings of the Royal Society. 293 



15. Further remarks (in the evidence of diluvial action in the caves of 

 Germany, by Professor Buckland. 

 At this meeting Mr. William Clift was elected into the society. 



29. Description of a mag-netic balance, with an account of some 

 recent experiments on magnetic attraction, by Mr. W. S. Harris, com- 

 municated by the President. 



At this meeting- of the society the following' gentlemen were elected 

 fellows: viz., Peter Barlow, Esq., Arthur de Capel Brooke, Esq., 

 J. S. Harford, Esq., the Rev. Lewis Evans, Samuel Reynolds Solly, 

 Esq., and the Rev. J. M. Traherne. 



June 5. Acaseofpneumato-thorax, with experiments on the absorp- 

 tion of different kinds of air introduced into the pleura, by John 

 Davy, M.D. 



On fossil-shells, in a letter to the President, by L. W. Dillwyn, Esq. 



John Rennie, Esq. was elected a fellow of the society. 



12. On the existence of bitumen in certain minerals, by the Rt. Hon. 

 George Knox, F.R.S. 



On the diurnal variation of the horizontal magnetic and dipping 

 needle, by P. Barlow, Esq. 



19. On the diurnal deviations of the horizontal needle, when under 

 the influence of magnets, by J. H. Christie, Esq. 



Astronomical observations made at Paramatta, communicated by 

 Sir T. Brisbane. 



Contributions towards the history of the cocoa-nut tree, by H. Mar- 

 shall, Esq. 



An account of the effect of mercurial vapours on the crew of H. M. 

 ship Triumph, in the year 1810, by W. Burnett, M.D. 



On the apparent magnetism of metallic titanium, by W. H. Wollas- 

 ton, M.D., V.P.R.S. 



Tables relating to certain deviations which appear to have taken place 

 in the north polar distance of some of the principal fixed stars, by 

 J. Pond, Esq., F.R.S,. Astronomer Royal. 



Account of a case of pneuraato-thorax, in which the operation of 

 tapping the chest was performed, with some observations on the power 

 of mucous membranes to absorb air, by John Davy, M.D., F.R.S. 



Account of experiments made with an invariable pendulum at New 

 South Wales, by Major-General Sir Thomas Brisbane,K.C.B., F.R.S., 

 communicated by Captain Henry Kater, F.R.S., in a letter to the 

 President. 



Second part of the paper on the nerves of the orbit, by C.Bell, Esq. 



On astronomical refractions, by J. Ivory, A.M., F.R.S. 



On algebraic transformation, as deducible from first principles, and 

 <?onnected with continuous approximation, and the theory of finite and 

 fluxional differences, including some new modes of numerical solution, 

 by W. G. Horner, Esq. 



Major-General Sir George Murray was elected fellow of the society. 



The Society then adjourned over their long vocation, to meet 

 again on Thursday, November 20. 



