of Edinburgh, Session 1874-75. 
521 
3. On the Oscillation of a System of Bodies with Rotating 
Portions. Part II. — Vibrations of a Stretched String of 
Gyrostats (Dynamics of Faraday’s Magneto-optic Dis- 
covery), with Experimental Illustrations. By Sir William 
Thomson. 
4. On the Theory of the Spinning-Top, with Experimental 
Illustrations. By Sir William Thomson. 
