2. In moderate towns, from 1-25 to 1-28.
3. In small villages and the open country, from 1-35 or 1-40, to 1-50 or 1-60.
Thus, in London one person in 20 of the whole population dies annually; while in the healthiest villages and open country, the rate of annual mortality is not more than 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.