;.j; .:|!fow,T;bekg:==^,l'' a,i?d L ==: 39.03362 log. ;1.5,01S276y7S: 



, , y/ L = . log. 0.7956638386 



andi (Para. 17) 0.9999663.... I.'.... ...... log. '9.9999853300 



-p = /^ = 0.7956783086 



""■-"■-"'■•■■ "•'r^S9.t)^6273N-.'N-. i;5913570I72 ■ ' 

 * „„„=,.,, -Inches.. „.«.".,,_.,-,..:■'■■ i- ; -j'^; ''r ', ^,/ ; /) 



which quantity 39.026273 Is the length of the simple pendulum striking 

 seconds in latiludjs. 1.3° 4' I.2''.- ■ ' ■-. , 



32, Gr.AViTY determined from the preceding expe-rimentSo 



Ir P b5 the^ien-grhDfthe'pendulum striking seconds in any latitude, 

 T the time of one vibration {h,) c the circumference of a circle whose 

 radius is 1, ^ the gravity, or space an heavy body wilbfall through in one 



second of time, then 



ft; 



g = 





which being expounded, by means ^f the preceding data, will give 



Inches. " t^eef. 



192.58693 = 16.04891. 



The present ExpmmentSi C(mpared with others made at the Equator and 

 lir.:^therparts(^tke:,XiJpMr: , 



33 o Before entering into the considerations which form the subject of 

 this article, I shall exhi hit, in the followiilg table,. the results of several 

 experiments, made in various parts of the world, divested from any 

 hypothesis oi;i the fi^gur% of the e;arth; ^^l • , 



(8) Tlie reduction from tlie " French, to {lie English measure' was made from Ca vallo's 

 comparative scB.le,( Elemetih of natural philosophz/, vol. 4. paget 410,) which gives the 



..J^rfuch foot == LQ65,75 English; ox (he French line = 0.08881 &c. of an English inch. 



