Adjudication of the Medals of the Royal Society for the year 1849 by 
the President and Council. 
The Copley Medal to Sir Roderick Impey Murchison, F.R.S., “for the eminent 
services he has rendered to geological science during many years of active observa- 
tion in several parts of Europe ; and especially for the establishment of that classifi- 
cation of the older palseozoic deposits, designated the Silurian System, as set forth in 
the two works entitled ‘The Silurian System founded on Geological researches in 
England,’ and ‘ The Geology of Russia in Europe, and the Ural Mountains.’” 
The Royal Medal in the department of Physics, to Lieut.-Col. Edward Sabine, 
Foreign Secretary R.S., for his “ Contributions to Terrestrial Magnetism,” published 
in the Philosophical Transactions for 1846, Parts VII. and VIII., and his Memoir 
“On the Diurnal Variation of the Magnetic Declination at St. Helena,” Part I., 
published in the Philosophical Transactions for 1847. 
The Royal Medal in the department of Geology, to Gideon Algernon Mantell, 
Esq., LL.D., F.R.S., for his paper “ On the Iguanodon,” published in the Philoso- 
phical Transactions for 1848, being a continuation of a series of papers by him on 
the same fossil animal, by which he has rendered eminent services to geology. 
The Bakerian Lecture for 1849 was delivered by Michael Faraday, Esq., F.R.S., 
and entitled “ Experimental Researches in Electricity. — Twenty-second Series. On 
the crystalline polarity of bismuth and other bodies, and on its relation to the mag- 
netic form of force.” 
