C 4048 ) 
on the fide of the Comet a ftar fufSctently clear^which was Ei-^t 
further diftant from him, than a Httle more than the diameter 
ofrheComer^ and that was at the fame height of the Horizon: 
which may ferve co determine the parallax.^\i the fame obferva- 
lion be made elfwhere^ 
JpriLyM.^^ in the evening, the Comet was equally diftant 
from the inferior ftar of the Northern Ear ofTaunis^ and from 
the fuperior of the root of the Northern horn. He was alfo as 
far diftant from this latter ftar, as this ftar is from that of the 
front.This placcjbeing carried over to the Map of the fixt ftars, 
fell on S.degrees and 3c'. of G^w/W, in the Northren latir.of i. 
degree andy6\ As we were preparing to obierve with the great 
Teicfcopejthe Heaven was clouded over. 
V/?^//. 8.9 and 10. we could make no obfervation at all, be- 
caufe of the conftant dark weather. 
Sigfior Caffi 111*5 refleHioni on theforegoifw Ohfervations^ 
All the places of the Cometjthat we have obfervcd till now, 
fall into a line little differing from an Arch of a great Cir- 
cle,which cuts the Ech'ptique in the loth, deg.45'.ofC<?w/m,and 
which confeqaently hath its greateft latitude in the io//^»de» 
gree and45'. oiPifces 5 which latitude is between 39* and 40. 
deg.Nord^ward, The fame Circle cuts the Equi^tor zx loi. de- 
grees of the Vernal iSedtion Earthward, and its greateft decli- 
nation from the Equator Nord ward is of 38^ degrees. 
Whence it follows, that the Comet at the time of his greateft 
Declinationjwherein it may have ftay'd a confiderable time, 
hath touched the horizon of thofe that are in the latitude of 
degreesnhe parallel of whom pafleth through the lower part of 
England^znd Khtou^^aland^WeJlph alia, Saxony^ Feland ScciAnd 
that he hath remain'd at that time all night and all day above 
the horizon of the raoft Northern people 5 as are thofe of the 
upper psivt oi England^HoUand.PemeramayScc But that he hath 
pafs'd through theZenith ofthe lower part ofSpaw^-^nd through 
Sardinia^CalabriayCkioySmyrna^diC'^yQt without having been per- 
ceived in thofe places^ becaufe he there pafs'd in the day-time. 
cSince we could not fee this Comet but about the end af 
March^ we have made ufeof our method explained in the The- 
ory of the Comet of the year 1665 . to find the places where- 
about this Comet hath been during themoneth of March^ in 
the Hypo^hefis of the equal refciUneal motion,which ferveth ta 
fepre. 
