DESIDERATA, ETC. XXI 



Notice of Determination of the Arc of Longitude between 

 the Observatories of Armagh and Dublin. By the Rev. T. R. 

 Robinson, D.D., &c. 



Report of some Galvanic Experiments to determine the 

 existence or non-existence of Electrical Currents among Stra- 

 tified Rocks, particularly those of the Mountain Limestone 

 formation, constituting the Lead Measures of Alston Moor. 

 By H. L. Pattinson, Esq. 



Report respecting the two series of Hourly Meteorological 

 Observations kept in Scotland at the expense of the British 

 Association. By Sir David Brewster, K.H., LL.D., F.R.S. 

 L. and E. 



Report on the subject of a series of Resolutions adopted 

 by the British Association at their Meeting in August, 1838, 

 at Newcastle. 



Report on British Fossil Reptiles. By Richard Owen, Esq., 

 F.R.S., F.G.S., &c. 



Report on the distribution of Pulmoniferous Mollusca in the 

 British Isles. By Edward Forbes, M.W.S., For. Sec. B.S. 



Third Report on the Progress of the Hourly Meteorological 

 Register at the Plymouth Dock-yard, Devonport. By W. Snow 

 Harris, Esq., F.R.S. 



The following Reports and Continuations of Reports have been 

 undertaken to be drawn up at the request of the Association. 



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 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 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 (continuatio)i), by Professor Owen, F.R.S. 



