Even then, however, the use of it as a wholesome and
pleasant article of diet was known to the workmen employed in the candle
factories, who were accustomed to drink freely of the mingled glycerine
and water which constituted the waste from the candles. Yet with this
fact under their noses, as it were, it is only recently that members of
the medical profession have begun to recommend the same use of glycerine
as a substitute for cod liver oil.--_Pharmacist_.
* * * * *
ANALYSIS OF OILS, OR MIXTURES OF OILS, USED FOR LUBRICATING PURPOSES.
Oils, fats, waxes, and bodies somewhat similar in nature, may--according
to the substance of a paper recently read before the Chemical Society,
by Mr. A. H. Allen, of Sheffield, and Mr. Thomson, of Manchester--be
divided into two great classes, viz., those which combine with soda,
potash, or other alkalies to form soaps, and those which do not; and
as those two classes of bodies differ materially in their actions on
substances such as iron, copper, etc., with which they come in contact,
it often becomes a question of great importance to the users of oils
for lubricating purposes to know what proportions of these different
substances are contained in any oil or mixture of oils. The object of
the authors was to give accurate methods for determining the percentages
of these bodies contained in any sample.
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