t 
CONTENTS. 
VIII. The Bakerian Lecture. On certain motions produced in fluid 
conductors when transmitting the electric current. By J. F.W. 
Herschel, Esq. F. R. S. p. 162 
IX. Experiments and observations on the developement of mag- 
netical properties in steel and iron by percussion : Part II. 
By William Scoresby, Jun. F. R. S. E. &c. Communi- 
cated by Sir Humphry Davy, Bart. Pres. R. S. p. 197 
X. On Semi-decussation of the Optic Nerves. By William 
Hyde Wollaston, M. D. V. P. R. S. p. 222 
The Meteorological Journal will appear in the Second Part of 
the Philosophical Transactions. 
TH E President and Council of the Royal Society adjudged 
the Medal on Sir Godfrey Copley’s Donation, to John Pond, 
Esq. Astronomer Royal, for his various Communications to the 
Royal Society. 
