n 1 in 55 or 60.

_Atmosphere of Theatres_.

Lavoisier, the French chemist, found, in a theatre, that, from the
commencement to the end of the play, the oxygen, or vital air, was
diminished in the proportion of from 27 to 21, or nearly one-fourth, and
was in the same proportion less fit for respiration than before.

_Butterflies_.

In June, 1826, a column of butterflies, from 10 to 15 feet broad, was
seen to pass over Neuchatel, in Switzerland. The passage lasted upwards
of two hours, without any interruption, from the moment when the
butterflies were first observed.--_Brewster's Journal_.

_Water Plant_.

A shrub has been discovered in our new Indian countries, from whose
stem, when divided, there issues a copious vegetable spring of limpid
and wholesome water. The natives know this well, and hence we rarely
meet with an entire plant. It is a powerful climber, and is quite new
and nondescript.--_Letter from India_.

_Malaria and Fevers_.

It is notorious, that, in the last autumn, the remittent fevers in
various parts of the country amounted to a species of pestilence, such
as has scarcely been known in England from this cause since the days of
Dr. Sydenham. Wherever ague had existed, or ever had been supposed
possible, in those places was this fever found; so that in all the
well-known tracts in Lincolnshire, Norfolk, Suffolk, Kent, Essex,
Sussex, Hampshire, &c. there was scarcely a house without one or more
inhabitants under fever, with a considerable mortality. In the parish of
Marston, in Lincolnshire, it amounted to 25 in 300 inhabitants. The same
fevers were extremely abundant in various parts of the outskirts of
London, as also in the villages or towns which are connected with it,
within a range of from six to ten miles. This was the case throughout
the range of streets or houses from Buckingham Gate to Chelsea; in which
long line, it is said, that almost every house had a patient or more
under this fever, though these were mistaken for typhus, or at least
thus misnamed. Then it was also about Vauxhall and Lambeth; and to a
great extent among all that scattered mixture of town and country which
follows from Whitechapel, from Bishopsgate, &c., and very particularly
along Ratcliffe-Highway to an indefinite range along the river. In
Lewisham there were in one house nine patients under this fever, which
proved mortal to one. We may also enumerate Dulwich, especially subject
to this disorder, Fulham