( 784 ) 
IV. Part of a Leitter of Mr. Halley, Dated 
Chcfier, O^ob. 25. i6pj. gi'^i^g an Ac- 
count of his Obfervations there of the Eclipfe 
of the Moon on the i^th of the laji Month. 
IObferved the late Eclipfe of the Moon, Ofloi. 19. 
with all the Satisfaftion I could defire. the Air was 
all the while very Hill and clear ; fd that I think the 
Obfervation may be very much depended on, and will 
With fufficienc Exadtnels, give the Longitude of this 
Place. 
Emerfions. h ' ' 
Porphyrites indthQ^ 
Middle of M.>S. 
Horminius. 
Mom Herculis. 
Besbicus. 
Apollonia, 
Byzantium, 
Lacus Niger Major. 8. 
S. Part of Maotis. 8. 
N.Partof Maotis, 8. 43, 
The End. 8. 49. | 
About the Middle there re- 
mained 9'.26".of the Lumi- 
nous Part, and confequeat- 
ly the Digit. Eclipfed, 8 *. 
b 
6. 
6. 
8 
16 
The Beginning. 
Tcrpbyrites imerged 
North Part of 5 
Mareotis* y 
Lacus Niger Major j 
and South End> 6. 26 
7. 00 
6. 21 
17. 
18. 
of Mareotiu 
Beshicus. 
Apollonian 
Byzantium.. 
Horminius. 
N. Part oi MaoUs, 
Mons CoraXo. 
Mons Herculis. 
S, Part of Maoris. 
6. 46 
6. 49 
6. S3 
6. 59 
7. 2 
7- 3 
7. 10 
7. .12. 
8. 
8. 
8. 
8. 26. 
8. 29. 
3^- 
30 
21. 00 
o 
AdJith 
