XX EIGHTH REPORT — 1838. 



On the state of knowledge of the Phaenomena of Sound, by 

 Rev. Robert Willis, M.A., F.R.S., &c. 



On the state of our knowledge respecting the relative level 

 of Land and Sea, and the waste and extension of the land on 

 the east coast of England, by R. Stevenson, Engineer to the 

 Northern Lighthouses, Edinburgh. 



On circumstances in Vegetation influencing the Medicinal 

 Virtues of Plants, by R. Christison, M.D. 



On Salts, by Professor Graham, F.R.S. 



On the Differential and Integral Calculus, by Rev. Professor 

 Peacock, M.A., F.R.S. , &c. 



On the Geology of North America, by H.D.Rogers, F.G.S., 

 Professor of Geology, Philadelphia. 



On the Mineral riches of Great Britain, by John Taylor, 

 F.R.S., F.G.S. 



On Vision, by Professor C. Wheatstone, F.R.S. 



On the application of a General Principle in Dynamics to 

 the Theory of the Moon, by Professor Sir W. Hamilton. 



On Isomeric Bodies, by Professor Liebig. 



On Organic Chemistry, by Professor Liebig. 



On Inorganic Chemistry, by Professor Johnston, F.R.S. 



On Fossil Reptiles, by Professor Owen, F.R.S. 



On the Salmonidie of Scotland, by Sir J. W. Jardine. 



On the Caprimulgida?, by N. Gould, F.L.S. 



On the state of Meteorology in the United States of Nbrth 

 America', by A. Bache. 



On the state of Chemistry as bearing on Geology, by Pro- 

 fessor Johnston. 



On Molluscous Animals and their Shells, by J. E. Gray, 

 F.R.S. 



On Ornithology, by P. J. Selby, F.R.S.E. 



On the Specific Gravity of Steam, by a Committee, of which 

 Mr. B. Donkin is Secretary. 



On the Geographical Distribution of Pulmoniferous Mol- 

 lusca, by E. Forbes, F.L.S. 



Reports requested, Researches recommended, and Desiderata 

 noticed by the Committees of Science at the Neivcastle 

 Meeting. 



REPORTS ON THE STATE OF SCIENCE. 



Prof. Bache, of Philadelphia, was requested to furnish a 

 Report on the state of Meteorology in the United States, for 

 the next meetinsr of the Association. 



