xvi REPORT—1840. 
The following Reports on the Progress and Desiderata of dif- 
ferent branches of Science have been drawn up at the request 
of the Association, and printed in its Transactions. ° 
1831-32. 
On the progress of Astronomy during the present century, 
by G. B. Airy, M.A., Astronomer Royal. 
On the state of our knowledge respecting Tides, by J. W. 
Lubbock, M.A., Vice-President of the Royal Society. 
On the recent progress and present state of Meteorology, 
by James D. Forbes, F.R.S., Professor of Natural Philosophy, 
Edinburgh. 
On the present state of our knowledge of the Science of Ra- 
diant Heat, by the Rev. Baden Powell, M.A., F.R.S., Savilian 
Professor of Geometry, Oxford. 
On Thermo-electricity, by the Rev. James Cumming, M.A.., 
F.R.S., Professor of Chemistry, Cambridge. 
On the recent progress of Optics, by Sir David Brewster, 
K.C.G., LL.D., F.R.S., &c. 
On the recent progress and present state of Mineralogy, by 
the Rev. William Whewell, M.A., F.R.S, 
On the progress, actual state, and ulterior prospects of 
Geology, by the Rev. William Conybeare, M.A., F.R.S., 
V.P.G.S., &c. 
Onthe recent progress and present state of Chemical Science, 
by J. F. W. Johnston, A.M., Professor of Chemistry, Durham. 
On the application of Philological and Physical researches to 
the History of the Human species, by J. C. Prichard, M.D., 
F.R.S., &c. 
1833. 
On the advances which have recently been made in certain 
branches of Analysis, bythe Rev. G. Peacock, M.A.,F.R.S., &c. 
Onthe present state of the Analytical Theory of Hydrostatics 
and Hydrodynamics, by the Rev. John Challis, M.A., F.R.S.,&c. 
On the state of our knowledge of Hydraulics, considered as a 
branch of Engineering, by George Rennie, F.R.S., &c. (Parts 
I. and II.) 
On the state of our knowledge respecting the Magnetism of 
the Earth, by S. H. Christie, M.A., F.R.S., Professor of Ma- 
thematics, Woolwich. 
On the state of our knowledge of the Strength of Materials, 
by Peter Barlow, F.R.S. 
On the state of our knowledge respecting Mineral Veins, by 
John Taylor, F.R.S., Treasurer G.S., &c. 
On the state of the Physiology of the Nervous System, by 
William Charles Henry, M.D 
