fome late flery Meteors. 22Yr 
_ Jf the whole of the meteor’s track be included) it feems to 
have lafted as much as three feconds, but in the bright ftate 
its duration was lefs than two, I think not much above one. 
Suppofing it defcribed an arc of 14° in ri fecond, or, accord- 
ing to Mr. Augert’s obfervation, of 25° in 3”, its real velo- 
city was about 12 miles a fecond. 
Such meteors as thefe, which pafs like a flafh of lightning, 
and defcribe fo fhort a courfe, are very unfavourable for calcu- 
lating the velocity, but afford great advantages. for determining 
the height, as they muft be feen nearly at the fame moment 
and in the fame place by the different obfervers.. Other in- 
ftances are found of fire-balls beginning with a dull red light 
like a falling ftar, particularly the great one of March 19, 
1719, treated of fo fully by Dr. Hatiey * and Mr. Wuis- 
TON tf. 
It is remarkable, that a fimilar meteor had appeared the 
fame day, that is, Saturday the 4th of October, about three 
in the morning, though, on account of the early hour, it was 
feen by fewer {petators. They reprefent it as rifing from the 
northward to a fmall-altitude, and then becoming ftationary 
with a vibratory motion, and an illumination like day-light ; 
#t vanifhed in a few moments, leaving a train behind. This. 
fort of tremulous appearance has. been noticed in other me- 
teors, as well as their continuing {tationary for fome time, 
either before they began to hoot forward, or after their courfe 
was ended. 
* Phil. Tranf. vol. XXX. N° 350. p. 978. 
‘¢ Account of a furprifing meteor feen March 19, 1.719. 
3} FIND 
