278 Mr. Bowditch on the total eclipse, June 16, 1806. 
tions of the American Philosophical Society, that the apparent times 
of the beginning and end of the eclipse at Lancaster were 9. 538" 
{erroneously printed 9/. 33’ 8”] and OA. 18’ 56”. The mean times, 
used in page 32, are these quantities increased by 6’; whereas the for- 
mer ought to have been increased 5°8, the latter 7’"3. This increas- 
es the time of conjunction at Lancaster, given in page 32, nearly 
0-3. Hence the corrected longitude from Greenwich is 5A. 5/22"2, 
The observations at Natchez given by Mr. Dunbar in page 263, 
vol. vi. of the same Transactions, are, beginning 20h. 5’ 24’*6, end 22h, 
38’ 54”"67 mean time, or 20/. 5’ 19” and 22/. 38’ 47°72 apparent 
time, which differ a few tenths of a second from those used in page 
32 of my memoir. It is however to be observed, that Mr. Dunbar 
subtracted 5” from the observed time of the beginning, supposing that 
time necessary to make the impression visible in the telescope; but 
as this correction is not applied to the other observations with which 
_ itis compared, it leads to an erroneous estimate of the longitude of 
the place. I assumed therefore 20/. 5’ 24”*1 and 22h, 38’ 47°*7 for 
the apparent times of observation, and using the elements in page 22, 
corrected for the errors of the longitude and latitude of the moon, 
found that the apparent time of conjunction became 10/. 15" 15"°2 
_A.M. Hence the longitude of Mr. Dunbar’s observatory is 64. 5 
298, and the Castle of Natchez (supposed 9” W) is 6A. 6’ 38-8 W 
from Greenwich, 
In page 276 of the sixth volume of the Transactions of the Amer 
can Philosophical Society, are given the observations of this eclipse 
made at Bowdoin College, Brunewick, in latitude 43° 53’ N, reduced 
48° 41 32", ‘The beginning was at 104, 14’ 0”, the end at 12h, 55 
20” apparent time, and by using the elements of page 22, corrected a3 
abovementioned, we have 
