Adjudication of the Medals of the Royal Society for the year 1868 by 
the President and Council. 
The Copley Medal to Sir Charles Wheatstone, F.R.S., for his Researches in 
Acoustics, Optics, Electricity, and Magnetism. 
A Royal Medal to Mr. Alfred Russell Wallace, for his Labours in Practical 
and Theoretical Zoology. 
A Royal Medal to the Rev. George Salmon, D.D., F.R.S., for his Researches in 
Analytical Geometry and the Theory of Surfaces, published in the Philosophical Trans- 
actions, the Transactions of the Royal Irish Academy, and the Quarterly Journal of 
Mathematics. 
The Rumford Medal to Dr. Balfour Stewart, F.R.S., for his researches on the 
qualitative as well as quantitative relation between the emissive and absorptive powers 
of bodies for heat and light, published originally in the Transactions of the Royal Society 
of Edinburgh, and the Proceedings of the Royal Society of London, and now made more 
generally accessible by the publication in 1866 of his Treatise on Heat. 
The Bakerian Lecture was delivered by Professor Henry E. Roscoe, F.R.S. ; it 
was entitled “Researches on Vanadium.” 
The Croonian Lecture was not delivered. 
