207 
ELEMENTS. 
d h m s 
Greenwich Mean Time of d in R. A. July 18 2 
8 
7-1 
O’s and (f’s Right Ascension 
7 
52 
20-13 
^’s Declination 
O 
N. 21 
/ 
31 
ft 
11-7 
O’s Declination 
N. 20 
57 
0-5 
d’s Hourly Motion in R.A. 
37 
29-4 
o’s Hourly Motion in R.A. 
2 
30-6 
d’s Hourly Motion in Declination 
S. 
10 
2-3 
0’s Hourly Motion in Declination 
s. 
26-8 
C’s Equatorial Horizontal Parallax 
59 
48-5 
o’s Equatorial Horizontal Parallax 
8-4 
d’s True Semidiameter 
16 
20-1 
o’s True Semidiameter 
15 
46*5 
The eclipse of the sun commences 
July 17*' 23'* 53“ 48» 
Greenwich mean time, the penumbra of the moon first touch- 
ing the earth at sun-rise in lat. N. 34° 43', long. W. 102° 15', 
in Texas; the penumbra, increasing in extent, will spread 
over the greater part of North America; the central and 
total eclipse will begin 18^ O'* 57“ 16% at sun-rise in lat. N. 
45° 43', long. W. 125° 47', near the mouth of the river 
Columbia; the shadow of the moon, moving in a north- 
easterly direction over North America, and across Hudson’s 
Bay, leaves the land on the northern shores of Labrador; its 
course is then in a south-easterly direction over the North 
Atlantic Ocean, where at 18*' 2'* 8“ 7% in lat. N. 56° 9', 
long. W. 30° 33', the sun will be centrally and totally 
eclipsed at noon ; the shadow, continuing its course, crosses 
the Bay of Biscay, and enters Spain ; it moves over the 
Mediterranean Sea, and passes into Africa near Algiers, and 
disappears at 18*' 3'* 53“ 10% in lat. N. 15° 55', long. E. 
39° 25', on the borders of Abyssinia and Nubia, near the 
Red Sea ; the penumbra, decreasing in extent, leaves the 
