554 The Rev. J. A. Coombe on the Rotation of the Earth. 



Pendulum Experiments in St. Nicholas Spire, Bristol. 

 Lat. 51° 27' N. 



This is a Httle more than in proportion to the sine of the lati- 

 tude, which gives ll°-7309 per hour. It appears however to be 

 pretty generally admitted by mathematicians, that the law of 

 the sine of the latitude is to be considered only as an approxi- 

 mation to the truth. I anxiously await the result of a rigorous 

 solution of this interesting problem, and am. Gentlemen, 



Yours respectfully, 



Thoovias G. Bunt. 



LXXXI. On the Rotation of the Earth. By the Rev. 3. A. Coombe, 

 late Fellow of St. John's College, Cambridge^. 



THE pendulum experiment of M. Foucault, in proof of the 

 earth's rotation about its axis, deservedly attracts at pre- 

 sent a large share of public attention. Several connect solutions 

 * Communicated bv the Author. 



