we do know, but that there may be in other parts, Eruptious of large
Springs at the bottom of the Sea, as well as there?

* * * * *

Printed with Licence for _John Martyn_, and _James Allestry_, Printers to
the Royal-Society. 1666.

{231}

* * * * *

_Num._ 14.

PHILOSOPHICAL
_TRANSACTIONS._

* * * * *

_Munday_, _July_ 2. 1666.

* * * * *

The Contents.

_An Account of a _New_ kind of _Baroscope_, which may be call'd
_Statical_; and of some Advantages and Conveniencies it hath above the
_Mercurial_; communicated by Mr. _Boyle_. The Particular Observations
of the Planet _Mars_, formerly intimated to have been made by Mr.
_Hook_ in _February_ and _March_ last. Some Observations, made in
_Italy_, confirming the former; and withall fixing the _Period_ of the
said Planet's Revolution. Observations, lately made at _London_, of the
Planet _Jupiter_: as also of _Saturn_. A Relation of a sad Effect of
Thunder and Lightning. An Account of some Books, lately publish'd;
_videl_. The Relations of divers Curious Voyages, by Mons. _Thevenot_:
A Discourse about the Cause of the Inundation of the _Nile_, by Mons.
_de la Chambre_, both _French_: De Principiis & Ratiocinatione
Geometrarum, Contra Fastum Professerum Geometriae, by Mr. _Hobbes_: King
_Salomons_ Pourtraiture of Old Age, by_ J. Smith, M. D.

* * * * *

_An Account of a _New_ kind of _Baroscope_, which may be called _Statical_;
and of some Advantages and Conveniencies it hath above the _Mercurial_:
Communicated, some while since, by the Honourable _Robert Boyle_._

[Sidenote: * See _Num. 11. p. 185. Phil. Transactions._]

As for the _New_ kind of _Baroscopes_, which, not long agoe, * I intimated
to you, that my haste would not permit me to give you an account off; since
your Letters acquaint me, that you still design a Communicating to the
{232} Curious as much Information, as may be, in reference to _Baroscopes_;
I shall venture to send you some Account of what I did but name (in my
former Letter) to you.

[Sidenote: * _The Scales here meant were before competent Eyewitnesses made
to turn manifestly with the thousandth part of a grain._]

Though by a Passage, you may meet with in the 19th and 20th Pages of my
_Thermometrical Experiments