Hinc nata Medicina, &c.

Haec sola naturae placuerat esse remedia parata vulgo, inventu facilia, ac sine impendio, ex quibus vivimus_, &c.

Plin.l.24.c.

1.
{lxxxvii:1} Consult _Hist.Roy.

Soc._ and their _Registers_.
The Laws of _Motion_, and the Geometrical streightning of _Curve Lines_ were first found out by Sir _Christopher Wren_ and Mr._Thomas Neile_.
The _equated isocrone Motion_ of the weight of a _Circular Pendulum_ in a _Paraboloid_, for the regulating of _Clocks_; and the improving _Pocket-Watches_ by _Springs_ applied to the _Ballance_, were first invented and demonstrated to this Society by Dr._Hooke_; together with all those _New_ and useful _Instruments_, _Contrivances_ and _Experiments_, _Mathematical_ and _Physical_, publish'd in his _Posthumous Works_ by the most accomplish'd Mr._Waller_, _Secretary_ to the _R.Society_.And since those the incomparably learned Sir _Isaac Newton_, now _President_ of the _Royal Society_; Mr._Haly_, the Worthy _Professor_ of _Geometry_ in the _University_ of _Oxford_; Dr._Grew_, and several more, whose Works and useful Inventions sufficiently celebrate their Merits: I did mention the _Barometer_, to which might be added the prodigious effects of the _Speculum Ustorium_, surpassing what the _French_ pretend to, as confidently, or rather _audaciously_, they do, and to other admirable Inventions, injuriously _arrogated_ by _Strangers_, tho' due of right to _Englishmen_, and Members of this Society; but 'tis not the business of this Preface to enumerate all, tho' 'twas necessary to touch on some Instances.
{xciii:1} Neh.2.