268 



OBSERVATIONS OF THE ECLIPSE 



five paces from the person who counted aloud the seconds of 

 the chronometer. Mr Garnett, besides being a good astrono- 

 mer, was much accustomed to the use of the telescope. — He 

 directed his view to the 45° on the left of the inferior vertex, 

 in versed vision, according to a previous calculation, and deter- 

 mined the following phenomena. chronometer. 



h / » 



Commencement of the eclipse. . ^ . ; . 9 37 36 



Total darkness. . . . . . . .. 10 55 58 



Illumination of the lunar disk, which he observed without a. darkened glass 11 00 28 

 End of the eclipse. . . . . . . . 00 21 41 



Owing to an accident he did not observe the end of total darkness. 



Mr. Garnett is positive, that the end observed is correct to 

 a second, and that the impression was sensible to him three 

 seconds previous. — We have then, 



Chronometer. Mean time. Siderial time. 



Ii / » li ' m h ' * 



The interior contacts were instantaneous, consequently they 

 may be ascertained at least to half a second ; the beginning to 

 less than 3", and the end according to M. Garnett to 1". 



June 16th. Equal altitudes of the sun. 



