Observations on the eclipse of the sun, June 16, 18065 21 
‘The latitude of the place of observation* was found to be 42° 33’ 
30” by the mean of three hundred and twenty altitudes of the sun, ob- 
served when within a few minutes of the meridian by a circle of reflec- 
tion, on the 7th, 8th, 9th, 12th, 14th, b5th, and 17th of October 1805. 
This latitude, ih age maa coils figuiresof Hiv eaith, 
SU | 4 g the 0 eee the 75 oe BO ‘ ey ob 
330 part of snclintintacet becomes 49°99! AUN. The longitude of the 
Place oft epereation is about — me east ieee Caney Universi- 
ty, i pe ae ‘. , ae eee 
P thad 
WIP OLA VALIUIIS 
Goi: Sialoms-ten: Bosee hight Hones "iaih car agiachettnaniibas 
schiaeieeesiails aman ee 
pera te ee oe Hence, if we estimate 
ae 
of Cambr: be 4h. . Pwest from Prccawich, apron: 
bly to She gree of the late President Willard in vol. i, of the 
Memoirs of the American Academy of Arts and Sciences, the longi- 
tude of the place of observation will be 4h. 43m. 32s. west from Green. 
wich, or 4h. 52m. 51s. west from Paris. This time being added to 
the times of observation at Salem gave the corresponding times at Pa- 
ris, with which I calculated the following elements by the tables in the 
third edition of La Lande’s astronomy, decreasing the moon’s horizon- 
tal parallax four seconds to make it conform to the new tables of Burg. 
eesoses 
= The place “2 megegeene was observed was in the garden adjoining Es- 
sex Bank in Market-street » about an eighth of a mile to the eastward of the 
place where the idanniamaites was rege and the eclipse observed. 
_+ This is conformable to La Lande’s tables. La Place, in his “ Mecanique Celes- 
te,” vol. ii, p. 150, calculated, from the observed lengths of pendulums in different 
latitudes, that the ellipticity was=1,; but in this calculation a small mi “was 
made in the coefficient of y, in the tenth of his equations x Peter ought to have 
been ‘60340, instead of -57624. Thiserrort alt is +145 which 
does not differ much from +3,, calculated froin ts of the lunar equations, in vol- 
ume iii, pages 282 and 285 of the same work. This last estimate agrees nearly 
with that made use of in the above calculations, 
