Mr. Bowditch on the total eclipse, June 16, 1806. 277 
is to decrease by one second of time the longitudes given in those 
pages» ‘The longitudes counted from Salem must also be decreased 
by 4’*7 more, on account of the difference between the longitude of 
Salem calculated in this memoir 4/. 43’ 36”7 and that formerly used 
4h, 43’ 32”. 
Hence the longitude of Rutland calculated in page 30 ought to be 
4h. 51’ 62" from Greenwich: that of Kinderhook, page 31, 44, 55’ 
9"*6, and that of Philadelphia, page 32, 5h. O' 34°°7. Another ob- 
servation was made at Philadelphia, by Professor Hassler, in a place in 
the latitude of 39° 57’ 2”, and 7” in time W from the State House, 
App. time. Par. in long. Par.inlat.  Aug.S.D. 
Beginning 9/. 39’ 48°°5. 35) 1"4 OY S7 = 16. 8911 
End 0 25 48°99 —5 19°2 16 52°38 16 42°08 
Hence the apparent time of conjunction was L1A. 20’ 00"*7, whence 
the longitude of the State House is 5/. 00’ 37"*3, The mean of this 
and the other observation is 5/. 0’ 36". Other observations made at 
this place will be given hereafter. : 
‘The apparent times of the beginning and end of total darkness, as 
observed at Albany, are given by Mr. De Witt in page 302, vol. vi. 
of the Transactions of the American Philosophical Society, at LIA, 
86” and 114. 12/57”. Mr. Ferrer in the same volume, page 294, 
states that the equation of equal altitudes had been neglected in regu- 
lating the time-keeper, and the corrected observations are 11h. 8 
14"6 and 114. 13’ 05"°6 mean time, being 2” more than in page 31 of 
my memoir. This decreases the parallax in longitude nearly 0”°4, 
increases the time of conjunction at Albany 1*3, and. decreases the 
longitude 1”*3. Hence the whole decrement of longitude from 
Greenwich is 23, making the longitude of Albany Ah. 54’ 593 W 
from Greenwich. | shits SE 
From Mr, Ellicott’s memoir in vol. Vi. 
835 
