Birmingham.
_Foucault's Experiment_ (Vol. vii., p. 330.).--The reality of the rotation,
and the cause assigned to it by Foucault in his experiment, is now admitted
without question by scientific men. But in measuring the amount of the
motion of the pendulum, so many disturbing causes were found to be at work,
that the numerical results have not been obtained as yet with exactness.
The best account is, perhaps, the original one in the _Comptes Rendus_. Mr.
Foucault has lately invented an instrument founded on a similar principle,
to find the latitude of a place.