Adjudication of the Medals of the Royal Society for the year 1840 by 
the President and Council. 
The Copley Medal to Professor Liebig, Foreign Mem. R.S., &c., for his discoveries 
in Organic Chemistry, and particularly for his development of the composition and 
theory of Organic Radicals. 
Another Copley Medal to M. Sturm, Foreign Mem. R.S., &c., for his “ Memoire 
sur la Resolution des Equations Numeriques,” published in the Memoires desSavans 
Etrangers for 1835. 
The Rumford Medal to M. Biot, Foreign Mem. R.S., &c., for his researches in, 
and connected with , the circular Polarization of Light. 
The Royal Medal in the department of Physics, to Sir John F. W. Herschel, 
Bart., K.H., V.P.R.S., &c., for his Paper entitled, “ On the Chemical Action of the Rays 
ot the Solar Spectrum on Preparations of Silver and other Substances, both metallic 
and non-metallic, and on some Photographic Processes,” published in the Philoso- 
phical Transactions for 1840. 
The other Royal Medal, not having been awarded in the department of Geology, 
was awarded in that of Physiology, to Charles Wheatstone, Esq., F.R.S., &c., for 
his Paper entitled “ Contributions to the Physiology of Vision,” published in the Phi- 
losophical Transactions for 1838, 
