r ss-s ] 
" appartierunt antcquam oriretur ipfa ftella co metes. 
tc Igitur veloci curfu laboravit ipfa ftella cometes, ita 
<£ quod praecurrerit 5 c longe verms meridiem prseceffit 
C£ ftellam matutinam, i. e. luciferum. Vifa eft circa 
Cc feftum S. Marias Magdalena;, 5 c ufque ad odtavam 
a S. Auguftini apparuit. Compilat. Chronol 
Although this whole account be very {lender and 
rude, it is however much the beft I have met withal 
of any comet earlier than that, which was obferved 
by Regiomontanus in the year 1472 (except perhaps 
the account given us by Nicephorus Gregoras of the 
comet of the year 1337, whofe orbit is computed by 
Dr. Halley) : for which reafon, I was induced to try, 
whether I could inveftigate a let of elements capable 
of reprefenting the places of this comet agreeable t® 
the above defeription, and after feveral attempts, 
fome of them indeed but tentative, I fixed upon the 
following numbers for that purpofe, viz. the place 
of its afeending node in 19 0 , the inclination of its 
orbit to the plane of the ecliptic 36°^, the place of its 
perihelion in v? 21 0 , its perihelion diftance from the 
fun 44foo fuch parts as the mean diftance of the 
earth from the fun contains ioocoo, and the time of 
its being in perihelion July 6 d 8 k p. m. The motion 
of the comet in this orbit was diredt. 
Its places computed from thefe elements are as in 
the following table- 
N n 2 
Tims 
