ginning of March^ if we fee it fo long, the laid motion (hall not 
exceed 4. minuts,and fo fhall be ftill diminiftiing^ except the 
Comet become Retrograde > which, as very important, he would 
have well obferved f, as alfo, whether its motion will be about 
the end more or left fwift,then he hath calculated it. 
He fubjoyneth, that the greateft way, which this Star 
could make in 24. hours, hath been 13. d. 25'} and in one hour., 
about 34'5and thinking it probable, that about the time, when 
it made fo much way, it fhould be neered: to the Earth , he con- 
cludeth that its motion in 24. hours mud be, in its lead: difbince 
from the Earthy as about 3. to 14, or 1. to 47, and that its motion 
in one hour was to be to the fame lead; diftance , as about i e 
to 1027. 
But that, which he Judgeth mod: remarkable, is 3 that he found 
by his Calculation, that the faid lead: diftance fhould be on the 
29. of December 0 when the Comet was oppodte to the Sun 3 which 
he does not know whether it may notferve to decide the grand 
Quedfon concerning the Motion of the Earth . 
He taketh further notice , that the Tayl of the Comet was to 
turn TVeftward , with a point to the Norths until the 29. of Decern - 
her^ at which time it was to be oppodte to the Sun , and that then 
the laid Tayl was to look direftly North $ but that, after that 
time, the Tayl was to turn Eajhvard , and continue to do lo, until 
it difappear 3 and that it fhall draw a little towards the Norths un- 
til the 8. or 10. of February , at which time the Tayl is to be pa- 
rallel to the JEquator , and if the Comet b eyet feen for fome time 
aft Jtthe Tayl fhall go a little lower towards the Souths but grow 
fmaller. 
He finds by his Hypothejts , that on the 2. of December , which is 
the ftrd: obfervation, that he hath heard of,, this Star was to be 
about 7. times more remote from the Earth , then when it was in 
its Pcrigeum 5 and that it will be again in an equal remoteneft 
from the Earthy on the 2 7 . of January j fo that he is of opinion, 
that in cafe this Comet have not been feen before the 2.of Decem- 
ber it will not be feen any more after the 27. of January. 
He wifhes above all things , that it might be very exa&ly ob- 
ferved , at what Angle the way of the Comet cuts the Equator , 
and, mod: of all , the Ecliptic ^3 that fo it may be feen , whether 
there 
