338 M E M O I R S of the 
A Comet, Anno i^pj, at Paris- by M, Caflini, Phil. Tranf. 
]\° 250. p. 79. ^ranflated from the Latin. 
UPON the night following the 19th of February , in the 
year 1(^99, at the royal obfervatory at 'Paris^ there 
began to appear between the opening of the clouds, that for 
feme days pad had overcafl the heavens, a fniall comet like a 
nebulous flar of the third magnitude, like that which was 
obferved in the month of September 1^98^ it was fituated 
among the Stell^e iiiformes of the fixth magnitude near the 
arctic circle, above the head of Auriga^ almoft in the middle 
between the occidental cubit of 'Terfeus and the head of Urfa 
major ^ which ^ycbo reckons in the number of the Stellce informed 
about Urfa minor -^ by repeated obfervations from that night to 
the next following, the motion of the clouds laying open that 
region of the heavens, it appeared to have a proper motion, 
and to dire£l its courle towards Capelhy with little or no devia- 
tion from the circle of its declination ; and had not the fky been 
overcafl the preceeding days, it might have been feen near the 
north Tole^ its velocity was fuch, that in a day's time it had 
accomplifhed about feven degrees of a great circle, by which 
motion it might in lefs than four days almoft reach the Poky 
and be aflbciated with the polar ftar^ he compared this comet 
with a ftar of the fixth magnitude which Tycho calls the fecond 
of thofe that are in a right line with the Pole^ and found that 
in pafling thro' the horary circle it had got the ftart of this ftar 
by 15' 55", to w^hich is owing the difference of its right afcen- 
fion being 4° 43' , for it was more northerly than that ftar by 
8' ^ from w^hence the longitude, from the latitude affigned this 
ftar by Tycho, being computed at this time, the comet may be 
referred to 15^ 51' of Gemini^ with 57" 25' north latitude : It 
moved in the region of the heavens oppoiite to that wherein the 
comet of the preceeding year had done, when almoft at the 
fame diftance from the \Pole as this appeared in at firft, and 
pre'tty near the fame place. 
The comet in September went in the fame tra^T: that that 
obferved by Caffini at !Bologfiad.\A in the year 1552 5 this latter 
in the month of ^December came from the fourhern regions, 
thro' the conftellations Lepus^ Orion, and T^?^r/^J, where itinter- 
feiEled the ecliptic in an angle of 76° of inclination, and thro' 
'P erf PUS and Cafjiopeia^ where it difappeared in January 1553, 
whilft the prefent comet firft appeared in the beginning of 
Stptemhery in the fame part- of Caffiopeia^ wherein the other 
difap- 
