He wishes above all things, that it might be very exactly observed, at what Angle the way of the _Comet_ cuts the _AEquator_, and, most of all, the _Ecliptick_, that so it may be seen, whether {7} there hath not been some _Parallaxe_ in the _Circle_ of his Motion; as also, that some observations could be had of its greatest descent beneath the _Tropick of Capricorn_ in the more _Southern_ parts, where he saith it would have been without _Refractions_; Moreover of the Time, when it hath been in _Quadrat_ with the _Sun_ about the 20 of _December_; and that also very exact Observation might be made of the time of its being again in _Quadrat_ with the _Sun_, which, according to him, was to be _January_ 16. He wishes also, that some in _Madagascar_ may have observed this Star; Seeing that it began to appear over the middle of that _Island_, and passed twice over their heads; he judgeth, that they have seen it before us. And he wisheth lastly, that there were some intelligent person in _Guiana_ to observe it there, seeing that within a few daies, according to his reckoning, it will pass over their Heads, and will not remove from thence but 8 or 10 degrees Northward, where he saith, it will disappear; thinking it improbable, that it can still appear, after the _Sun_ shall have passed it. This Account beareth date of the 2. _January_, new stile, 1665. and the Author thereof addeth this Note, That, seeing it could not be printed nor distributed so soon as he desired, he hath had the opportunity to verifie it by some Observations, from which he affirms he hath found no sensible difference; or, if there be, that it proceeds only from thence, that the Stars have advanced, since his _Globe_ was made. He concludeth, that if this continue, and the first Observations do likewise agree, or that the differences do arrive within the Times ghessed by him, that he hopes, he shall determine both the _Distance_ and the _Magnitude_ of this _Comet_; and that perhaps one may be enabled to decide the Question of the _Motion of the Earth_. In the interim, he assureth, that he hath not changed the least number in his Calculations, and that _Monsieur Huygens_, and several French Gentlemen, to whom he saith, he hath given them long since, can bear him witness that he hath done so; as also many other friends of his, who saw upon his _Globe_, several daies before, the way of the _Comet_ from day to day. Thus for the _Parisian_ Account of the Comet, which is here inserted at large, that the intelligent and curious in _England_ may {8} compare their Observations therewith, either to verifie these _Praedictions_, or to shew wherein they differ; which is (as was also hinted above) the design of this _Philosophical Prophet_ in dispersing his Conceptions, who declareth himself ready, in case he be mistaken in his reckoning, to learn another _Hypothesis_, to explicate these admirable appearances by. * * * * * _An Experimental History of Cold._