e 
MATHEMATICAL PAPERS. 8x 
IV. Afironomical Oe Grvations, made in the State of Mafa- 
chufetts. By Profeffor WirriAMs, 
Obiecritions of the eclipfes of the fun and moon, in the years 
: 1761, and 1764 ; ; and - 1770 to 1784. 
1. An obe critic of a lunar elipt, November 12, 1761, at 
Waltham. 
SE HE weather was fo cloudy that I could only make the 
ng obfervations of this Sipa m E 
— Temp. app. 
The fidos "— Kepler, F 16*59* o" 
Mov Faprumo Y er 7 40 
| T4 dg 
17 28 
Mare Crifium, "M i: 
Totalimmerfion, |^ 45 10 
Zi An obfervation ef a eei ere an 19; 1764, at 
altham. 
Then moon rofe behind a s nd that hy along the horizon, 
but foon-began to appear : About 6^ 10' I fw her confiderably 
eclipfed : Tycho was then covered. 
The. hadan reached Nectaris, 6"-30' 
Copernicus, ` 32 
: Mare Vaporum, | 43 
Menelaus, 55 
L Archimedes, 
