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 know, whether that Sally be more easie to discover, than the shadows of the Satellites, which Campani believs, Auzout hath not seen; and whether he be assured, that those obscure parts, which he there distinguishes, do not change: for if they should not change, then Jupiter would not turn about his Axis, which yet, he saith, it doth, according to the Observation made by Mr. Hook, May 9 1664. inserted in the first papers of these Transactions. The full Discovery of which particular also he makes to be a part of Cassini and Campani's work, seeing that they so distinctly see the inequalities in the Belts, and see also sometimes other Spots besides the shadows of the Satellites: where he exhorts all the Curious, that have the conveniency of observing, to endeavor the discovery of a matter of that importance, which would prove one of the greatest Analogies for the Earth's Motion.

The Title of this Curious piece, is, ''Diatribæ Themæ Willisi Med. Doct. & Profess. Oxon. De Febribus Vindicatio, Authore Richardo Lower, &c.'' In it are occasionally discussed many considerable Medical and Anatomical inquiries, as, Whether a Fever does consist in an Effervescence of Blood? And if so, of what kind? Whether there be a Nervous and Nutritous Juice? Whether the office of sanguification belongs to the Blood it self, existing before those Viscera (at least) that are commonly esteemed to be the Organs of sanguification? How Nutrition is performed, and the nourishing substance assimilated? Whether the Blood affords both the Matter for the structure of the Body, and such parts also, as are fit for the nourishment of the same? Whether the Pulse of the Heart ceasing, there remains yet a certain Motion in the blood, arguing, that Pulse and Life do ultimately rest in the Blood? Whether the Umbilical Vessels convey the blood of the Mother to the Child, or whether the Fœtus be for the most part form'd and Rh