[ 28 5 1 
I think the computed places here fet down agree 
as well with the foregoing defcription as any regular 
computus can be expedted to do , and the refemblance 
of all the elements gives fome ground for conjedture, 
that this comet might poffibly be the fame with that 
which was oblerv’d by Paul Fabritius and others in 
the year i yy6, whole orbit Dr. Halley has computed : 
See his Synopjis Ajironomia cometicce. Indeed the 
change in the place of the perihelion may perhaps be 
thought greater than could arife from the mutual gra- 
vitations of the comets disturbing one another ; but 
then it may be confider’d, that neither the place nor 
time of the perihelion, nor the perihelion distance of 
the comet of the year 1556, could be determined 
very accurately from obfervations made only for 1 2 
days, at 40 days distance from the perihelion, as thofe 
of Fabritius were, unlcfs they had been more exadt 
than his appear to be. If thefe were one and the 
fame comet, its period is 292 years ; and we may ex- 
pedt i.s return about the year 1848. 
There are in the before- mention’d manufeript, be- 
sides the palfages already quoted from Egidius, two 
other places which deferve to be taken notice of. 
One of them is fo much of a Small tradt, intituled, 
Judicium de flella comata anno Domini 1301, as con- 
cerns the place and motion of the comet 5 it is as 
follows : 
“A.D. Mcccprimo, primo die Septembris appa- 
<c ruit cometa in occidente, et per menfem vel am- 
" plius vifus fuit. Ultima autem die Septembris 
“ duabus horis 40 minutis poSt occafum Solis — in- 
<{ veni quod longitudo cometae in fignis et gradibus 
u erat 
