230 Gould’s Report on Trans-Atlantie Longitude. 
m and 
Heart's Content and Calais; 9, Personal error in noting signals; 
10, Personal equation in determining time; 11, Final result for 
longitude; 12, Transmission-time of the signals 
Jersey City and Washington simple clock-comparisons in- 
stead of the better method of isoiensl. E 
as 
tudes, should be carefully re-determined. Walker's value, how- 
which have appeared best entitled to confidence in recent years, 
the following :— 
From Eclipses and Occultations.—The value adopted in the 
volume of Observations for 1845 is 5" 8" 14#-64, Peirce, in 
from occultations observed by Bond from 1839 to 1841, 
gave 5" 8™ 135-9. Walker, from all available observations be- 
_—. oh and 1842, obtained 5" 8™ 145-16, a value chee 
quently reduced to 13°85, by change in the adopted longitu 
of Philadelphia, Cambridge, and Washington. of 
‘the Fanart parallax: ded d 4 
ti ns, required a still further diminution of all 
gto correc 
, Walker and others, from. 
