100 MEASUREMENT OF AN ARC 



Now in order to obtain a general mean for the ratio of the polar a :• > 

 to the equatorial diameter of the earth, kt each of thefe be taken 

 feparately, /rj^, with the French meafure ; then with the Englifh, snci 

 lastly with the Swediih, which will produce three means ; from which 

 three, th^ general wxmh had. If the formula in poge 93, Afia ' /. 

 Refearches, Vol. 12th, be referred to, and the refpeclive latitu . v 

 and the degrees due to them, be fubflituted, we rn4! have the rei^.u 

 ss follows ; 



First, with the French mcafurement in latitude ^7 2 a, 



^ -. — , . , — J 



* CoF.» ( SO 34' 44") — Cos.* ({7= 1i 0') . ( 6"795. \ Y 



. \ 6047-2.83/ 1 



^#-^ ^Snun^l' n' ^"^ ■ (~^f- ^Sm^H »■' H'i^l 1-OP3456S 



r 



■*^Cos.2 (IS"^ 2' 66 — Cos.* (4?^ 24' ") . / ^"''^"- \t 

 \ eoJ«7.56y 1 



Jsf-e l/c;,, 4 /470 aji. o'M /60795. 0\2. ^ 



^'"' ^^^ ^-^ ^ ^'(60487:56; -"^'"-^P^' ^' ^^"^ 1.003453S 



I ^Cos.-(l6- 34' 4^") - C«s.M47<' ?4' 0" . ^^^l!^-)^' ^ 



>-^* Vsiu.?07» 24' ^")-(6-^^||78)^_Sin.»p6" |i» 42"^ 1.0033787 



1 



The Megn of which i$ 



o < << 



Secorid, with the Engiifli, in latitude j^/'^B^a? 



V Co^.' ( S° 34' 44") - Cob ^ (5^2" 2' 20").^^^-^_^^ j 



t¥^~VllJ7b^ir^0^r^ — Sia..=» (1 3^2^") 1.0032102 



1 "^Cas.* (16<> 34' 42") — Co8.M5i» £' «0") • /'^-^^^^ V , 



^4-^ 1/Siu.*(^5'> 2' 20") .Y^"82(). Y|-_Siu.»(l6'' 34' 42") .1.0031 



42Q 



