[ *7 ]

u^icrves no regard, since they may as well beattributed to errors in the Observations, as wellas to those of the Calculations: And Astrono-mers seldom mak# less in their Theories of theprimary Planets, which they have cultivated for lomany years.

And in the fame manner he found his Theoryagree with every one of Fiamjlead' s Observations,except such trifling differences, of which he givesa Table.

Having thus far established his Theory, he takesinto consideration the course of the Comet in 1607,which preceded that of 1682, which Kepler andLongomontanus say they observed ; but though theywere great Astronomers, they have transmitted tooremiss a description, and not sufficiently exact forthe present enquiry: But such as they have givenare,

The Comet preceding that of 1682; to wit, in1607, was observed by Kepler at Prague , the16th of September that year, old stile, at nineo clock at night,

deg. min.

and he estimates its place, Leo 18 30

and North Latitude 35 |

But as the places of the fix’d Stars are falsely de-*scribed in Lycho's Tables by some mistake; whenthey are set to rights, its apparent place at London ,

Leo

and at the same time and place,according to Halley'sCom-~)^ oputation its place was, j

deg.

min.

fee.

21

49

00

21

55

50

the