242 OBSERVATIONS on TWO ECLIPSES. 
An Obfervation of the Eclipfe of the Moon on the r1th 
of Nov, 1780, at Newport in the State of Rhode-TIfland. 
‘Time by the 
Clock. True Time. 
hy uallle il A tae’ 
The beginning of the Eclipfe, - - * = 7 AO as Io 24 39 
Immerfion of Grimaldi begins, - - - 7 48 50 TO 333/25 
Ditto, - - - ends, - - - We BX Oe Io 36 I0 
Immerfion of Tycho begins, - - - 8 o 36 Io 45 12 
Ditto, - - ends, - - - - not obferved, 
The fhadow to Gallileo, - - - - [eee fae io 48 18 
Immerfion of Copernicus begins, - - - 8 27 54 IZ 12 31 
Ditto, - - - ends, - - 8 32 : 35 tl 27. 52 
The fhadow in the middle of Dionyfius, = - 8 46 55 RE gE" 935 
The fhadow of the Pointed Promontary - - 855. Aa II 4O 21 
Copernicus begins to appear, - = a - 9 17 54 52: 42.34 
Grimaldi - = ditto, - - - - 912%. 2 m 6 42 
Copernicus wholly appears, - - - - 9) 23.5 35; 2 On Ts 
Grimaldi - ditto, - - - - 9 26 45 12 Ir 26 
The Pointed Promontary appears, - - - 9 5I 12 i235 55 
Tycho wholly appears, - - - - Io to 6 I2 54 5% 
The end of the Eclipfe, - - - - Io. 32 | To 5336 59 
The rate of the Clock, At Noon. 
November 11, Om 16420557 
12, 9 14 30,7 
Remarks upon the Obfervation of the Eclipfe of the Sun. 
THE clock by which the time was obferved, is a pen- 
dulum one with a verge of compenfation, made by Mr. 
Parthond, a celebrated clock maker at Paris. It was re= 
gulated many days before and after the obfervation by 
correfponding altitudes taken with a quadrant of Ramfden, 
having a radius of one Englifh foot; it is a very good one 
and well graduated. 
The fame quadrant ferved to obferve the time when 
the horns and limbs of the moon and fun arrived at the 
hori- 
Eclairciffements fur l’obfervation de Peclipfe de Soleil. 
LA pendule dont on s’eft fervi pour obtenir l’heure eft une pendule a verge de compenfati- 
on faite par M. Barthond celebre horloger de Paris, ellea ete reglee plufieurs jours avant et 
apres l’obfervation par des hauteurs correfpondantes prifes avec un quart de circle de Ramfden 
d’un pied anglois de rayon tres bon, et tres bien divifé. 
Le méme quart de-cercle a fervi pour les obfervations des paflages des cornes et des bords du 
folcil et de Ja lune au fil horifontal, et au fil vertical de la lunette qui y eft adaptée. 
L’obfervateur qui en embarquant des inftruments d’aflronomie n’avoit eu pour objet que de 
regler des montres marines, n’ctoit pas auifli bien pourvu de lunettes que de pendules et de quart 
de 
