Scientific American Supplement, No. 415, December 15, 1883Various
Science
Scientific American Supplement, No. 415, December 15, 1883
Various
Science -- Periodicals
My experiments tend to indicate that the process just described is that
best adapted for the preparation of lard for use in pharmacy. There is,
however, a point connected with this or any other method of preparing
lard which is deserving of more attention than it has, I believe,
usually received, and that is, the source from which the flare has been
derived. Everybody knows how greatly the quality of pork depends upon
the manner in which the pig has been fed, and this applies to the fat as
well as other parts of the animal. Some time ago I had some pork
submitted to me for the expression of opinion upon it, which had a
decided fishy flavor, both in taste and smell. This flavor was present
in every part, fat and lean, and it is obvious that lard prepared from
that fat would not be fit for use in pharmacy. The pig had been
prescribed a fish diet. Barley meal would, no doubt, have produced a
better variety of lard.
* * * * *
ANTI-CORROSION PAINT.
The _Neueste Erfinderung_ describes an anti-corrosion paint for iron. It
states that if 10 per cent. of burnt magnesia, or even baryta, or
strontia, is mixed (cold) with ordinary linseed-oil paint, and then
enough mineral oil to envelop the alkaline earth, the free acid of the
paint will be neutralized, while the iron will be protected by the
permanent alkaline action of the paint. Iron to be buried in damp earth
may be painted with a mixture of 100 parts of resin (colophony), 25
parts of gutta-percha, and 50 parts of paraffin, to which 20 parts of
magnesia and some mineral oil have been added.
* * * * *
CARBON IN STEEL.
At a recent meeting of the Chemical Society, London, a paper was read
entitled "Notes on the Condition in which Carbon exists in Steel," by
Sir F.A. Abel, C.B., and W.H. Deering.
Public-domain text, read in full here on John Shaqi.
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