He wishes, that all the changes that shall fall out in this _Comet_, might be exactly observ'd; because of its not being swift, and the Motion of the Earth very sensible, unless the _Comet_ be extreamly remote, we should find much more light from this, than the former Star, about the Grand Question, whether the _Earth_ moves or not; this Author having all along entertained himself with the hopes, that the Motion of _Comets_ would evince, whether the _Earth_ did move or not; and this very _Comet_ seemed to him to have by design appeared for that end, if it had had more _Latitude_, and that consequently we might have seen it before Day break. He wishes also, that, if possible, it may be accurately observed, whether it will not a little decline from its great Circle towards the _South_; Judging, that some important truth may be thence deduced, as well as if its motion retarded more, than the place of its _Perigee_ (which will be more exactly known when all the passed Observations shall have been obtained) and its greatest Motion do require. He fears only, that it being then to rise at Break of Day, exact Observations cannot be made of it: but he would, at least have it sought with _Telescopes_, his _Ephemerides_ directing whereabout it is to be. _April_ 10. it was to be over against the point of the _Triangle_, and from thence more _Southerly_ by more than two degrees; and _April_ 11. over against the bright Star of _Aries_, _April_ 17. over against the Stars of the _Fly_, a little more _Southerly_, and _May_ 4 it is to be over against the _Pleiades_, and about the fourth or fifth of the same Month, it is to be once more in _Conjunction_ with the _Sun_; after which time, the _Sun_ will move from it _Eastward_, and leave it towards the _West_; which will enable us to see it again at a better hour, provided the cleerness of the Day-break be no impediment to us. He addeth, that this Star must have been the third time in _Conjunction_ with the _Sun_, about the time when it first began to appear: and foresees, that from all these particulars many considerable consequences may be deduced. {40} It will cut the _Ecliptick_ about the end of _July_, new Style, a little more _Eastwards_ than the _Eye_ of _Taurus_; at which time there will be no seeing of it, except it be with a _Telescope_. It will be towards the _End_ of _April_, new style, twice as far distant as it was in _Perigee_, thrice as far, _May_ the fourth, four times, _May_ the eighteenth, and five times, _June_ the first, &c.