PHILOSOPHICAL 
TRANSACTIONS. 
XVI. Of the Rotatory Motion of a Body of any Form whatever , 
revolving , without Rejlraint , about any Axis faffing through 
its center of Gravity. By Mr. John Landen, F.R.S. 
■ .p 
Read March 17, 1785. 
A SPHERICAL body, uniformly denfe, it is obvious, 
will, if made to revolve freely about any axis palling 
through its center, continue to revolve about the fame axis ; 
and, by what I have fhewn in the Philofophical FranfaBions 
for the year 17 77, it appears, that a cylinder of uniform den- 
fity, whofe length is to its radius as \/^ to 1, will do the 
fame. It likewife appears, by my Mathematical Memoir s 9 
Vol. LXXV. * T t that 
