DESIDERATA, 
fyc. 
The following Reports on the progress and desiderata of dif- 
rent branches of science have been drawn up at the request of 
the Association, and printed in its Transactions. 
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. 
On the recent progress and present state of Chemical Science, 
by James F. W. Johnston, A.M., Professor of Chemistry, Dur¬ 
ham. 
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. 
On the advances which have recently been made in certain 
branches of Analysis, by the Rev. G. Peacock, M.A., F.R.S., &c. 
On the 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 Mathe¬ 
matics, Woolwich. 
