SoHthingiy and the True Higb-mters^ for which rcafoti 
I forbear it, till furthet Experiierice (hall have i&formed 
us better. 
An Obfervation of the Beginning of ^Ae Lunar 'EcW^k which 
hapned Aug. 19. 1681. in the Mornings made on the 
Ifland <?f Lawrence Madagalcar, %il4&-.T^ 
Heathcotj and communicated by Mr, Flamftead. 
M R, Heathcot was Chyrurgeon to a Ship which lay 
then at the bottom of a deep Bay on the Wejiem 
shore otthQ I (land, and that part which the Portugefe and 
our Maps call the Terra del ^ada^ h^ had with him then 
on Shore^a ^adrant of 2 Foot Radim^2Lnd a Telefcope of 9 
Foot, but no Clocks to fupply which defeft, be made a 
Fendulum of a String and a Bullet 3^ Inches long, that 
each fingle might anfwer a of Tim 
Waiting the beginning of the Eclipfe with his Glafi, as 
foon as he (aw the TtmShadon> enter on the Moons Limb^ 
he caufed his Friends, who affifted him, to make the Pen^ 
dulum Vibrate, and count its Vibrations 3 of which they 
had numbred 140 % of time when he took the 
height of Vrocyon ( then Eaft of the Meridian^ 
the next day he obferved the Suns Meridional height 
with the lame ^»^<rfr^«^,whence he found the Latitude 
of that Place South, hence the time when betook 
the Height of Frocyon is found ^ mane^ and fubftra» 
aiag the ^ paft fince the obferved beginning of the 
Eclips, its 
^ ^ St 
True Beginning was at 4 48 40 
Which at the Obfervatory, here^ I noted at 150 40 
therefore this part ofMfi^af^^^^^r more e^/er/jf 2 58 00 
or 44 30, which our Maps make %2gr^^ that is Jigt 
more remote from it than it really is« 
