Proceedings (~if tke Cambridge Philosophical Society. x £l-& 
ing it round a straight connec ting- wire. A horse-shoe magnet 
was placed in the circuit, by twisting a wire from right to left 
round one pole, and from left to right round the other ; on con- 
necting it alternately with each end of the battery, the magne- 
tism of one pole was destroyed, when that of the other was in- 
creased. On transmitting the galvanism from a pair of plates 
of 1 1 feet of surface through a copper globe of 4 feet surface, 
the magnetic influence was distributed over every part, both of 
the globe and of the plates themselves. The paper was con- 
cluded with some remarks on the probable insight into the laws 
of galvanic agency, to be hoped for from ihe application of the 
newly discovered connection between magnetism and galvanism. 
On a Regulator to equalize the Velocity of Machinery. By 
the Rev. William Cecil, M. A. F. C. P. S., Fellow of Magde- 
lene. — If two wheels be so connected that the velocity of one 
being increased, that of the other shall be increased in the same 
ratio ; and if these wheels be also connected, so that the velo- 
city of the first being increased, that of the other shall be in- 
creased in a higher ratio ; it will be impossible that any increase 
at all should take place, because it would require the second to 
move with two different velocities at once. These conditions 
may be fulfilled by connecting the wheels in the first place by 
common teeth-work, and in the next place by another toothed 
wheel which slides into different positions as the centrifugal 
force varies. By this means Mr Cecil obtains a regulator which 
opposes no resistance up to a certain velocity, but which, be- 
yond that point, opposes an insurmountable resistance to all in- 
crease of velocity ; and which can be easily combined with any 
revolving machine, of whatever power and construction, whose 
rate of going it may be desirable to equalize. 
May 22. — The Society held its second anniversary meeting, 
at which the following Officers were appointed for the ensuing 
year : 
President.— Dr Wood, Dean of Ely, Master of St John’s College. 
Vice-President. — Dr E. D. Clarke, Professor of Mineralogy. 
Treasurer Rev. B. Bridge, B. D. F. R. S., Fellow of Peterhouse. 
c f Rev. G. Peacock, M. A. F. R. S., Fellow of Trinity, 
secretaries, j j g HensloWj M# A> F< L . St John’s. 
f Dr Thackeray, Emmanuel ; Professor Cu mining ; Professor 1 ,ee ; 
Council. < Rev. R. Gwatkin ; Rev. T. Hughes, Emmanuel', Rev. T. Cheva- 
( lier ; Mr Whewell. 
