Latitudes . of fame remarkable Places near the Severn. 387 
VI 
CO 
j n 
r D and Ardurus ; 10 + hours interval 
Nov. 1. 
14 20 — 
4 going of clock uncertain $ F. 
a . V at G. 
5 obfkrved only at two wires. 
S°* 
14 47 
4 D and Ar&urus ; 12J hours 
interval $ 
b going of dock uncertain. 
3 7 79 
Apr. 26. 
14 > 4 .i 
J D obferved only at three wires, 
l do not agree ; F. 
and they 
This method of determining terreftrial longitudes I have 
fully detailed in the Philofophical Tranfadlions, VoL LXXVI. 
and ftill think it cannot be too ftrongly recommended. The 
preceding additional fet of refults do further corroborate the 
reliance that may be put on it, though the obfervatlons were 
not made with that intention, and confequently feveral of 
th em are deficient in many particulars : their agreement, never- 
thelefs, is conclufive, and infinitely more fatisfadlory than 
could be expedted. Since the above-mentioned publication I 
have been informed, that M. le Marquis be Chabert and 
others, many years ago, fettled differences of meridians on 
fimilar principles, and I dare fay with as much fagacity as the 
then imperfedt ftate of the method would permit. At prefent 
it is certainly confiderably improved, being fufceptible of very 
great exadtnefs and facility, which perhaps may be confidered 
as the foie requifites for rendering it any wife ufeful. 
The latitude of the fame place, taken with an 18-inch 
quadrant made by Bird, is thus by my obfervations 1 
E e e 2, 
5i 
