Some particulars, communicated from forraign parts, concerning the Permanent Spott in Jupiter; and a Contest between two Artists about Optick Glasses, &c.
See Numb. 1. of these Transactions; by the date whereof it will appeare, that that Spot was observed in England, a good while before any such thing was so much as heard of.
Eustachio de Divinis (saith the Informer,) has written a large Letter, wherein he pretends, that the Permanent Spot in Jupiter hath been first of all discovered with his Glasses; and that the P. Gotignies is the first that hath thence deduced the Motion of Jupiter about his Axis; and that Signior Cassini opposed it at first; to whom the said Gotignies wrote a letter of complaint thereupon.
The same Eustachio pretends likewise, that his great Glasses excell those of Campani; and that in all the tryals, made with them, they have performed better; and that Campani was not willing to do, what was necessary for well comparing the one with the other. viz. To put equall Eye-glasses in them, or to exchange the same Glasses.
The said Divini affirms also, that he hath found a way to
know, whether an Object glass be good or not, onely by looking upon it, without trying. This would be of good use, especially if it should extend so far as to discerne the goodness of such a glass, whilst it is yet on the Cement.
An Account of Dr. Sydenham's Book, entituled, Methodus Curandi Febres, Propriis observationibus superstructa.
This Book undertakes to deliver a more certain and more genuine Method of curing Feavers and Agues, than has obtained hitherto: And it being premised, First, that a Fever is Natures Engine, she brings into the field, to remove her enemy; or her handmaid, either for evacuating the impurities of the blood, or for reducing it into a New State: Secondly, that the true and genuine cure of this sickness consists in such a tempering of the Commotion of the Blood, that it may neither exceed, nor be too languide: This, I say, being premised by the Author, he informs the Reader;
In the First Section, of the different Method, to be employed in the cure of Feavers, not only in respect of the differing constitutions and ages of the patients, but also in regard of the differing seasons of one and the same year, and of the difference of one year from another. As to the Former, he shews, in what sorts of Patients, and at what time of the Feaver, Phlebotomy, or Vomiting, or both, are to be used; and when and where not: In what space of time the Depuration if nature be not disturbed or hindred in her work, will be perform'd: When Purgatives are to be administred: How that Diarrhea's happen, if the Patient had in the