270 Mr. Bowditch on the solar eclipse, Sept. 17, 1811. 
An occultation of « Tauri, observed by Mr. Ellicott January 21, 
1793, and one of 2 Pleiadum by Messrs. Bradley and Pease, October 
20, 1804, might be used in calculating the longitude of this city, if. 
corresponding observations under a known meridian could be obtain- 
ed. To compare these times with those computed for Greenwich in 
the Nautical Almanac, would render the result liable to an error which 
might amount to nearly half a degree of longitude. 
At William and Mary College, Williamsburg, by Professor Blackigg, 
? Sept. 17, 1811. 
Latitude of the place of observation $7° 15’ 20" reduced 37° 4! 17’ 
North. 
App.time. ()- Oke; ee ae lat. > S. D. Aug. 
Beginning Oh. 26' 5620 '02"+4, 14’ 53°83 
- Annulusbroken 2 13 12 -29 © a 23 °O 37 42 +3 14 52°18 
End of the eclipse’3. 41 57 20 —19 48-4 4251 +4 14 49 *32 
‘Hence the apparent time of conjunction, by the mean of these 
three observations, was 1h. 50’ 17’"7, which subtracted from 6A. 57 
6”"1 gives the longitude of William and Mary College 5h. 6! 48"-4= 
76° 42' 06" W from Greenwich. The calculation of the longitude of 
this place from the transit of Mercury of Nov. 5, 1789, will be given 
in this memoir. . 
_ Near New Brunswick, New Jersey, by Mr. John Garnett, 
Sept. 17, 1811. 
r. Garnett’s account of the observation is as follows.“ The 
™ ae was perceptible at 0h. 36’ 5” apparent time, allowing 3 
“ before it became sensible for the contact, it must have been at OA 
** 36' 2”. The end at 34. 45’ 58” apparent time. Latitude of the 
“ place of observation 40° 30’ 0" N, being 26” N and 2-5 in time W 
“from Columbia College.” » As this allowance of 3” was not made 
