174 
Dr. longfi eld’s 
S I R, 
Cork e, 
Feb. 17, 1779. 
1 SEND you all the obfervations of any confequence 
that have been made here. Some of them are by Mr. 
newenham, a young gentleman of confiderable abili- 
ties. He lives on a hill, about 2400 yards E. [anfwering 
to a difference of meridians of 7| feconds of time] and 
600 N. of my obfervatory [anfwering to 1 8" difference 
of. latitude] and has a clock with a wooden pendulum ; 
a tranfit telefcope of 30 inches in length, with an achro- 
matic objeCt-glafs ; and a reflecting telefcope of eighteen 
inches focus, made by dollond, magnifying 70 times 
very diftindtly. Mr.' mainaduc’s obfervatory is 1600 
feet due W. of mine [anfwering to a difference of meri- 
dian of five feconds of time]. The eclipfe of the Sun 
was obferved there, for the convenience of the fide-glafs, 
with a tranfit telefcope of fmall magnifying power, 
placed on rack-work ; fo that, though it was a very good 
obfervation, the beginning may be reckoned three or 
four feconds fooner. I was unluckily interrupted at the 
inftant. The end was not feen. The longitude of Corke 
is, I believe, fufficiently determined by the occulta- 
ttions. I have calculated fome of them, if you fhould 
take 
