Beneath the work-table he has at his
disposal a closet in which to place his apparatus after he is through
using them. Each pupil has in front of him a water-faucet, which is
fixed to a vertical column and placed over a sink. Alongside of this
faucet there is a double gas burner, which may be connected with
furnaces and heating apparatus by means of rubber tubing. A special
hall, with draught and ventilation, is set apart for precipitations by
sulphureted hydrogen and the preparation of chlorine and other
ill-smelling and deleterious gases. The great amount of light and
space provided secure the best of conditions of hygiene to this fine
and vast laboratory, where young people have all the necessary
requisites for becoming true chemists.--_La Nature._
* * * * *
DUST-FREE SPACES.[1]
[Footnote 1: Lecture to the Royal Dublin Society by Dr. Oliver J.
Lodge, April 2, 1884.]
Within the last few years a singular interest has arisen in the
subject of dust, smoke, and fog, and several scientific researches
into the nature and properties of these phenomena have been recently
conducted.
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