DESIDERATA, ETC. XlU 



On the state of the Physiology of the Nervous System, by 

 William Charles Henry, M.D. t i. t • j 



On the recent progress of Physiological Botany, by John Lind- 

 ley, F.R.S., Professor of Botany in the University of London. 



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



On the philosophy of Contagion, by Wm. Henry, M.D.,F.R.S. 



On the state of Physiological Knowledge, by the Rev. Wilham 

 Clark, M.D., F.G.S., Professor of Anatomy, Cambridge. 



On the state and progress of Zoology, by the Rev. Leonard 

 Jenyns, M.A., F.L.S., &c. 



On the theories of Capillary Attraction, and of the Propagation 

 of Sound as affected by the development of Heat, by the Rev. 

 John Challis, M.A., F.R.S., &c. 



On the state of the science of Physical Optics, by the Rev. 

 H. Lloyd, M.A., Professor of Natural Philosophy, Dublin. 



On the state of our knowledge respecting the application of 

 Mathematical and Dynamical principles to Magnetism, Electri- 

 city, Heat, &c., by the Rev. Wm. Whewell, M.A., F.R.S. 



On Hansteen's researches in Magnetism, by Captain Sabine, 



F.R.S. , ^ . . _ - 



On the state of Mathematical and Physical Science in Bel- 

 gium, by M. Quetelet, Director of the Observatory, Brussels. 



On the present state of our knowledge with respect to Mine- 

 ral and Thermal Waters, by Charles Daubeny, M.D., F.R.S., 

 M.R.I.A., &c.. Professor of Chemistry and of Botany, Oxford. 



Observations on the Direction and Intensity of the Terres- 

 trial Magnetic Force in Scotland, by Major Edward Sabine, 

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



Report on North American Zoology, by John Richardson, 

 M.D., F.R.S., &c. 



Supplementary report on the Mathematical Theory of Fluids, 

 by the Rev. J. Challis, Plumian Professor of Astronomy in the 

 University of Cambridge. 



Comparative view of the more remarkable Plants which cha- 

 racterize the Neighbourhood of Dublin, the Neighbourhood of 

 Edinburgh, and the South-west of Scotland, &c. ; drawn up for 

 the British Association, by J. T. Mackay, M.R.I.A., A.L.S., 

 &c., assisted by Robert Graham, Esq., M.D., Professor of 

 Botany in the University of Edinburgh. 



