on the lower; the
_other_, solves that difficult _problem_, why _Urinators_ or _Divers_, and
others, who descend to the bottom of the Sea, are not oppressed with the
weight of the incumbent water? where, among other solutions, _that_ is
examined, which occurs in a printed Letter of Monsieur _des Cartes_, but is
found unsatisfactory.

II. _Nicolai Stenonis de Musculis & Glandulis Observationum Specimen; cum
duabus Epistolis Anatomicis_. In the _Specimen_ it self, the Author, having
described in _general_, both the _Structure_ and the _Function_ of the
_Muscles_, applies that description to the _Heart_, to demonstrate that
_that_ is also a _true Muscle_: Observing _first_, that in the substance of
the _Heart_ there appears nothing but _Arteries, Veins, Nerves, Fibres,
Membrans_; and that that, & nothing else is found in a _Muscle_; affirming
withall, that which is commonly taught of the _Muscles_, and particularly
of the _Heart's Parenchyma_, as distinct from _Fibres_, is due, not to the
_Senses_, but the _Wit_ of _Anatomists_: so that he will not have the
_Heart_ made up of a substance peculiar to it self, nor considered as the
principle of _Innate heat_, or of _Sanguification_, or of _vital spirits_.
He observes _next_, that the _Heart_ performs the like _operation_ with the
_Muscles_, to wit, to contract the Flesh; which action how it can have a
different cause from that of the Contraction made in the _Muscles_, where
there is so great a parity and agreement in the _Vessels_, he sees not. And
as for the _Phaenomena_, that occur, of the _Motion_ of the Heart, he
undertakes to explicate them all, from the _Ductus_ or _Position_ of the
_Fibres_; but refers for the performance of this undertaking to another
_Treatise_, he intends to publish.

[Sidenote: __Conglobate_ Glanduls are called those, that do consist, as it
were, of one continued substance, having an _even_ superficies; whereof
there are many in the _Mesentery_, and in other places: contra distinguisht
to those, that bear the name of _Conglomerate_ Glanduls, which are made up
of several small Kernels, such as the _Pancreas_, the _Salivating
Glanduls_, &c._]

As to his Observations about _Glanduls_, he affirms, that he has been the
First, that has discover'd that Vessel, which by him is call'd {177}
_Salivare Exterius_, passing from the _Parotides_ (or the two chief
Arteries that are on the right and left side neer the Throat) into the
Mouth, and conveying the _S