ECLIPSE OF THE SUN, JUNE 16, 180C. 297 



Tabic of the results of geographical positions which should 

 be substituted for those in page 273. 



Bowdoin College. 



Albany. 



Kinderhook south landing. 



Chancellor Levingston's place. 



Newburg. ■ . 



New- York. . • 



Philadelphia. 



Lancaster. . . 



Williamsburg. 



Fort at Natchez. 



New-Orleans. 



Sum of errors of the longitudes of the moon and sun or correction to be 

 subtracted from the new tables, supposing exact the longitude of the sun = — 27" 5 



North latitude of the moon in conjunction at 4h 30' 12" 6=19' 27" 1 

 Correction of the Tables = + 10" 9 



Investigation of the semidiameters of the sun and moon. 



The horizontal semidiameter of the 3) in conjunction is by the tables 

 idem. . ■ - © ... 



Difference of the horizontal semidiameter by the tables 

 Supposing the correction of the tables in latitude of the moon. 

 Difference of the horizontal semidiameters in conjunction. 

 For the observed duration of total obscurity at Kinderhook. -4 

 For Albany, supposing the duration of total obscurity 4' 41 

 For Boston, ditto ditto. . 4 38 



Mean difference of the horizontal semidiameter in conjunction. . 39 07 



It is to be remarked that the difference of the semidiameters, 

 resulting from the total eclipse is that of the lowest points of 

 the moon's surface, as, according to the statement, page 266, 

 " 4" or 5" before the total obscurity, the remainder of the disk 

 " of the sun was reduced to a very short line, interrupted in 

 " many parts." 



At this time the most prominent points of the lunar disk 

 were projected on the sun; consequently, the duration of the 

 total obscurity, had it not been for the concavities of the limb 

 of the moon, would have been at Kinderhook 4' 46" instead 

 of 4' 37", as it was observed. Supposing the duration of total 

 ebscurity to have been 4' 46", 



The difference of semidiameters would be augmented. . 1" 80 



Difference by the above mean . ... . 39 07 



Difference of sernid:ar.i«lers reckoned from the most prominent points of the 3 40 87 



