The discarding of the chemical purifier at the present day is a move of
which the advantage may well be overrated.
ARTIFICIAL LIGHTING OF GENERATOR SHEDS.--It has already been argued that
all normal or abnormal operations in connexion with an acetylene
generating plant should be carried out, if possible, by daylight; and it
has been shown that on no account must a naked light ever be taken inside
the house containing such a plant. It will occasionally happen, however,
that the installation must be recharged or inspected after nightfall. In
order to do this in safety, a double window, incapable of being opened,
should be fitted in one wall of the house, as far as possible from the
door, and in such a position that the light may fall on to all the
necessary places. Outside this window may be suspended an ordinary hand-
lantern burning oil or paraffin; or, preferably, round this window may be
built a closed lantern into which some source of artificial light may be
brought. If the acetylene plant has an isolated holder of considerable
size, there is no reason at all why a connexion should not be made with
the service-pipes, and an acetylene flame be used inside this lantern;
but with generators of the automatic variety, an acetylene light is not
so suitable, because of the fear that gas may not be available precisely
at the moment when it is necessary to have light in the shed.
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