CONTENTS. 
XXIX. Further researches on the magnetic phcenomena produced 
by electricity ; with some new experiments on the properties of 
electrified bodies in their relations to conducting powers and tem- 
perature. By Sir Humphry Davy, Bart . P. R. S. p. 425 
Presents received by the Royal Society from November 1820, to 
July 1821. p. 441 
Index p. 451 
