528 Mr. C. Tomlinson on the Motions of Eugenic Acid 



P M+V) WWW 





^ w =|f. 



V 



hence 





0-V^'^=-|f; 



W=m 



T , B 2 Q BR BR 



B?B? ,B? B# 



i BR BR 



B?7B? B?? By 



w /B 2 Q^B 2 Q\ B 2 Q BR 



(41) 



Accordingly R represents the potential of the magnetic distri- 

 bution by which, so far as concerns its action on a magnetic pole 

 external to the conductor, the induced current- system may be 

 replaced. 



I reserve for publication elsewhere the comparison of the 

 results obtained in the foregoing memoir with the present 

 known observations. I propose then to consider the modifica- 

 tions to which these results will be subject from the circum- 

 stance that, with greater velocities of rotation, the inductive 

 actions between the several parts of the disc become appre- 

 ciable. 

 Berlin, November 1863. 



LXXVII. On the Motions of Eugenic Acid on the Surface of Water. 

 _% Charles Tomlinson, F.C.S., Lecturer on Science, King's 

 College School, London*. 



[With a Plate.] 

 \1l7HEN a drop of eugenic acid (the chief constituent of oil of 

 ™ " cloves) is placed on the surface of water, it behaves much 

 in the same manner as a fragment of camphor under similar 

 conditions. 



The continuous motions of a fragment of camphor on the 



* Communicated by the Author. 



