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HIS DISCOVERIES IN SCIENCE. 261
"He allows that a communication was known and
asserted to exist between those ventricles and the third,
long prior to his time ; but he shews, that it was never
delineated after such a manner, nor in any way that could
convey a precise idea respecting it : much less was im
plied the existence of the foramen he describes.
"The channel of communication seemed to be referred,
chiefly, to the posterior part of the lateral ventricles, whilst
the foramen of Monro, is situated at their anterior part.
Now, in the Regnum Animale of Swedenborg, 207,
the following striking observation occurs: Foramina
communicantia in cerebro vocantur Anus et Vulva,
præter meatum seu emissarium lymphæ, quibus ven
triculi laterales inter se, et cum tertio, communicant ;’
which may be thus translated : The communicating
foramina in the cerebrum are called Anus and Vulva,
beside the passage or emissary canal of the lymph ; by
these, the lateral ventricles communicate with each other,
and with the third ventricle.’
"This work was printed in the year 1744 ; that is to
say, nine years prior to the earliest notice taken by Dr.
Monro of the foramen in question."
The discovery of the constant gentle motion of the
brain, corresponding to the motion of the lungs, was
attributed to John Daniel Schlichting, by Blumenbach,
in his Instit. Physiology, 1787, § 201 , in which he refers
to Schlichting’s Commecc Litter Nor., 1744, p. 409 ;
this discovery, however, may be found fully described in
Swedenborg’s Economia Regni Animalis, 1740, (see
Nos. 349 and 458, ) which was before Schlichting wrote.
In a very erudite article lately printed in a highly res
pectabe publication, the learned author gives a brief
explanation of this discovery.
"Swedenborg, (says he, ) thus anticipated the discovery
of Daniel Schlichting, concerning the constant and gentle
motion which, after birth, the brain undergoes corres
* See the Monthly Magazine for May, 1841, pp. 448-460.
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