Greene County herald. (Leakesville, Miss.) 1898-current, 1899-05-25
SCIENTIFIC MISCELLANY.


The useful beetle known as Novios
CARDINALS, and employed in Calitor.
MIA to eat up the white or futed
scale" insects of the orange groves,
has been exported to Portugal for the
same purpose. The beetles were
packed in moss with quantity OF
scale insects to eat, and sent by mail
to Lisbon. Only few reached their
destination alive, but they are pro-
life, and in few months thousands
were available for work on the scale
insects which infest the orange groves
of the Tagus.
The international bureau of weights
and measures, which is supported at
Paris by number of the leading
governments of the world, for the pur-
pose of constructing and testing the
standards of weight and mass, reports
that bar composed of SO per cent.
of nickel and "a per cent OF steel
was expanded by heat only 1-5O OF the
amount to be expected from the sepa-
rate metals. Such an alloy will prove
most valuable for astronomical clocks,
as it will practically eliminate ques-
tions of temperature in their adjust
ment.
A phenomenon, the cause of which
has not yet been satisfactorily ex-
planned, was described at the last
meeting of the British association.
Disks of loaf sugar were mounted on
a lathe and rapidly rotated while a
hammer played lightly against them.
An almost continuous radiation of
light was thus produced from the
sugar. 1t was shown that the light
did not arise from heating of the
sugar, and it is believed to be caused
by some change taking place in the
sugar crystals. The act of crystalli-
cation is known to be sometimes ac-
companied by flashes of light. The
practical bearing of these experiments
is on the question of thepossibility OF
obtaining artificial light by methods
as yet untried.
An English biologist, Mr.. Stanley
Kent of st. Thomas hospital, London,
has been studying and experiment.
ever since 1893 with the virus" used
in vaccination, and he now announces,
as the sufficient reward of his labors,
that he has discovered and isolated the
| specific organism on which the meal
culably valuable effects of the Jenne
rian operations depend. He has al
ready prepared and used pure cultures
of the germ with excellent results.
| This discovery is of much more than
scientific interest. If confirmed by
! other Investigators it means the sweep
ing away of such few objections to
vaccination as are now entertained by
reasoning beings, for the employment
of pure cultures of this single bene-
fcent organism will render inappre-
ciable the probability of communicate
ing disease or producing unattended
constitutional disturbances.
The great secret of successful sing
ing is breathing The breathing to
live is of the same nature as the func
ton of the eye or the ear. The
breathing to speak or to sing has to
be learned. To compress and con-
dense the air in the lungs, an then
to force it straight at the vocal organ
in the throat is an artificial process.
There is deep breathing, called dia-
phragmatic or abdominal breathing;
there is broad or wide breathing, called
rib breathing, and there is shallow
| breathing, called collarbone breathing.
Deep breathing is the only possible
| breathing for the true use of the voice.
Sound muSt come without breath
OF otherwise the sound will be harsh.
A simple test in making the sound
with different quantities of breath will
show how the tone is affected by it,
A good hint given on this point is to
hold a lighted candle before the
mouth while giving forth the sound.
If the fame fickers there is breath
with the sound. If there is only sound
| there will be no flicker.