( 4 ) 
%>out , after he had feen it (as himfelf affirms) but 4 01* 5 times-, 
the Virtuoft of England^ among others, might compare alfo their 
Obfervations with his Ephemerides 3 either to confirm th eHypo* 
thefts , upon which the Author had before hand calculated the 
way of this Star 3 or to undeceive him , if he be in a miftake* 
The laid Author Dedicateth thele his conceptions to the moll 
Chriftian King, telling him, that he prefents Him with a defign, 
which never yet was undertaken by any Aftronomer 5 all the 
World having been hitherto perfwaded, that the motions of 
Comets were lo irregular, that they could not be reduced to any 
Laws, and men having contented themfelves, to oblerve ex- 
actly the placeSjthrough which they didpafs^ but no man, that he 
knows, having been sfo bold as to venture to foretel the places 9 
through which they Jhoukl pals, and where they fhould cealeto 
appear : Whereas he exhibits here the Ephemerides , determi- 
ning day by day , in what place of the Heavens this Comet (hall 
be, at what hour it lhall be in its Meridian, and atwhathour 
it (hall let , until its too great remotenejfs, or the approach of 
the Sun , hide it from our .eyes. Defending to particulars, he 
faith, that this Star, being difengaged from the beams of the Sun, 
might have been obferved , if his conje&ures be good, ever 
finceithath been of 17 or 18 degrees Southern Latitude , and 
that about the middle of November lad 9 and fconer unleis it 
have been too fmall : That however it hath been feen in Holland 
ever, fince the 7 d> of December laft , at which time, according 
to his reckoning, the Diurnal motion of the Comet dioxxld alrea- 
dy amount to 17 or 18 minuts. He finds, that this Star mo- 
veth juft enough in the Plan of a Great Circle , which inclineth to 
the Equinoctial about 30 degrees, and to the Eclipticft about 
49 d. or 49 f, cutting the Equator at about 45 d. £, and the 
Eclipticft at the 28 d, of Arks, or a little more. He faith juft 
enough , becaule he thinks, there may perhaps be home par allaxe 5 
which he wiflieth could be determined. 
H enceffo he goes on) everyone who pleafeth. may lee,in tracing 
the Comet upon the Globe, through , or by which Starrs it hath 
galled and fhall pals 5 adding, that there will be neither caufe 
to -wonder, that having defeended to about 6. degr. beneath the 
Tropic ftof Capricorn^ he hath remounted afterwards, and lhall go 
am 
