As to _Prognostications_, he somewhat complains, That men do more inquire what Comets _signifie_, then what they _are_, or how they are generated and moved; professing himself to be of the mind of those that would have Comets rather _admired_ then _feared_; there appearing indeed no cogent reason, why the Author of Nature may not intend them rather as Monitors of his _Glory_ and _Greatness_, then of his _Anger_ or _Displeasure_; especially seeing that some very diligent Men (among whom is _Gemma Frisius_) take notice of as great a number of _good_ as _bad_ Events, consequent to Comets. _Seneca_ also relating, That that Comet which appeared in his time, was so happy, that it did _Cometis detrahere infamiam_, it cleared the credit of Comets, and made People have good thoughts of them. Having given some Account of what may be look'd for in this _Prodromus_, it follows, That some also should be rendred of the _Animadversions_ mention'd to have been made upon the same. This was done by that _Parisian_ Philosopher Monsieur _Auzout_, in a Letter of his to his Country-man Monsieur _Petit_; in which he strongly conceives, That this {108} _Prodromus_ contains some mistakes, of which he chiefly singles out one, as most considerable, in _Hevelius_'s Observation of _Feb._ 8/18, and declares thereupon, That he, and several very intilligent Astronomers of _France_ and _Italy_ concurring with him therein, (whereas M. _Hevelius_ to him seems to stand single, as to this particular) found by their Observations, That this Comet could not, on that day of _February_, be there where M. _Hevelius_ placeth it, _viz._ In _Prima Arietis_; unless it be said, That it visited that Star of _Aries_ on the 18, and returned thence the 19^{th}, into its ordinary course; in which, according to his, and his several Correspondents Observations the Comet on _Feb._ 17. was distant from that _first Star_ of _Aries_ at least 1 degree and 17 minutes; and on _February_ 19. (he having missed, as well as his other Friends, the Observation on _Febr._ 18) was advanced in its way 12 or 13 minutes, but yet distant from the said Star _some minutes_ above a _whole degree_, and consequently far from having then passed it. After which time M. _Auzout_ affirms to have seen it as well as several others, for many daies, and that until _March_ 7/17, observing, That about _Feb._ 26. or 27, when the Comet was nearest to the often-mentioned _first_ of _Aries_, it approached not nearer thereunto, then the distance of 50. minutes.