PEN 



10. To find the length of the seconds pendulum at the lev.el of the sea, 

 in any latitude A. 



Length = 39.0117150 + 0.2102732 sin.* A. 



TABLE, 



Of the length of the seconds Pendulum in racuo, at the level of the sea, Inf 

 Kir G. Shuckbwrgh't standard (see Weights and Measures J t observed 

 at the following places, by Capt. Kater" s method, and with his apparatus. 



