DESIDERATA, ETC. xiii 
On the state of the Physiology of the Nervous System, by 
William Charles Henry, M.D. 
On the recent progress of Physiological Botany, by John Lind- 
ley, F.R.S., Professor of Botany in the University of London. 
Vou. III. 
On the Geology of North America, by H. D. Rogers, F.G.S. 
Onthe philosophy of Contagion, by Wm. Henry, M.D.,F.R.S. 
-Onthestate of Physiological Knowledge, by the Rev. William 
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 Propaga- 
tion of Sound as affected by the development of Heat, by the 
Rey. 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. 
Vou. IV. 
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. 
é paelaneteen's researches in Magnetism, by Captain Sabine, 
On the state of Mathematical and Physical Science in Bel- 
gium, by M. Quetelet, Director of the Observatory, Brussels. 
Vot. V. 
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.1.A., &c., Professor of Chemistry and of Botany, Oxford. 
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. 
Vou. VI. 
On the variations of the Magnetic Intensity observed at dif- 
ferent points of the Earth’s Surface, by Major Edward Sabine, 
R.A., F.R.S. 
On the various modes of Printing for the use of the Blind, 
by the Rev. William Taylor, F.R.S. 
On the present state of our knowledge in regard to Dimor- 
phous Bodies, by Professor Johnston. 
On the Statistics of the Four Collectorates of Dukhun, under 
the British Government. 
