lii 



without referring to the greater point of principle. I should hare been 

 very sorry in return for your kindness to say no to you on the other ground, 

 and yet I fear I should have been constrained to do so." 



At the end of the year he had another invitation from the Honourable 

 Col. Grey. " If you could make it convenient to come down to Windsor 

 any afternoon in the course of next week, it would give His Royal Highness 

 great satisfaction to have the opportunity of having some conversation with 

 you on this interesting subject (the magnetic properties of oxygen)." 



He was made Corresponding Associate of the Accademia Pontificia, Rome, 

 and Foreign Associate of the Academy of Sciences, Haarlem. 



Mt. 59 (1851). 



The twenty-eighth series of Researches were sent to the R^oyal Society on 

 Lines of Magnetic Force, their definite character, and their distribution 

 within a Magnet and through Space ; also the twenty-ninth series, on the 

 employment of the Induced Magneto-electric Current as a test and measure 

 of Magnetic Forces. 



He gave three Friday discourses on the Magnetic Characters and Relations 

 of Oxygen and Nitrogen ; on Atmospheric Magnetism ; and on Schonbein's 

 Ozone. 



No work is recorded for the Trinity House. 



He was made Member of the Royal Academy of Sciences at the Hague, 

 Corresponding Member of the Batavian Society of Experimental Philosophy, 

 Rotterdam ; Fellow of the Royal Society of Sciences, Upsala ; a Juror of the 

 Great Exhibition. 



This year closed the series of ' Experimental Researches in Electricity/ It 

 began in 1831 with the induction of electric currents, and his greatest dis- 

 covery, the evolution of electricity from magnetism ; then it continued to ter- 

 restrial magneto-electric induction ; then to the identities of electricity from 

 different sources ; then to conducting-power generally. Then came electro- 

 chemical decomposition ; then the electricity of the voltaic pile ; then the 

 induction of a current on itself; then static induction. Then the nature 

 of the electric force or forces, and the character of the electric force in 

 the Gymnotus. Then the source of power in the voltaic pile ; then the 

 electricity evolved by friction of steam ; then the magnetization of light 

 and the illumination of magnetic lines of force ; then new magnetic actions, 

 and the magnetic condition of all matter ; then the crystalline polarity of 

 bismuth, and its relation to the magnetic form of force ; then the possible 

 relation of gravity to electricity ; then the magnetic and diamagnetic con- 

 dition of bodies, including oxygen and nitrogen ; then atmospheric mag- 

 netism ; then the lines of magnetic force, and the employment of induced 

 magneto-electric currents as their test and measure. 



The record of this work, which he has left in his manuscripts and re- 

 published in his three volumes from the papers in the Philosophical Trans- 

 actions, will ever remain Faraday's noblest monument — full of genius in the 



