Mineral Point tribune. (Mineral Point, Wis.) 1869-1938, 1875-11-18
MECHANICAL AND SCIENTIFIC.

DR.. Schlieman writes from Leyden,
Holland, to the London Acadeng that he
has become convinced, by new evidence
treasured in the prehistoric portion Of the
museum Of that city, that there never was
any Stone Age" but that stone weapons
and implements have at all times, even in
the remotest antiquity, been used stimuli
taneously with weapons and implements
of copper
M Emile Mer, who has attained con
siderable eminence as a Psychologist
among French botanists, says that leaf
that has attained its full growth only con
tinues to exist on the condition of forming
starch or glucose. When there is insult
ficient light or insufficient power to form
these, what has been already elaborated is
parted with by the stomata, the leaves turn
yellow and die away.
Paint intended for outside work,
which will not be projected by varnish, is
mixed as follows: Crush the color if in
Jumps, and mix to II stiff paste with lin
seed oil, boiled or raw-the latter is prefer
able; then if dark color, add brown
japan or gold-size, in the proportion Of
onc-half pint to "A gallon of OIL in ii light
color, use patent drier in similar quaint
ties. - Western Manufacturer.
The Jou1nol Of CHEMISTRY warns the
drinkers Of water of wells near dwellings
to beware Of the typhoid poison sure to
be found sooner or later in those reser-
vors if any of the house drainage can
pcrcoate them. The gelatinous matter
often found upon the stones of a well is
a poison to the human system, probably
causing by It's spores fermentation of
the blood with abnormal heat or fever.
Wholesome, untalnted water is always
free from all color and odor. TO test it
thoroughly, place half a pint in a clear
bottle, with few grains OF lump sugar,
and expose it, stoppered, to sunlight in IA
window. If, even after an exposure of
eight or ten days, the water becomes tur-
bid, be sure that the water has been
contaminated by sewage of some kind.
If it remains perfectly clear it is pure and
safe
"A curious instrument has been eXhb.
tied before the Academy of Sciences,
Paris, which is called by its inventor an
'analyzing cornet." What is commonly
called noise is. as is well known made up
of an infinite number of musical notes,
and these the cornet in question is de-
signed to analyze, just as prism separates
ray of white light into its colored compo-
nents. In appearance the instrument is
described as resembling a trumpet, hay
ing a nozzle to fit to the ear, instead Of a
mouth-piecc, and furnished with holes
like u clarionet Provided with an in
slrumcnt OF this kind, it is said that the
roaring of "a cataract or the bowling of
tempest may be resolved by the listener,
skilled in Unnecessary lingering, into the
soitest melody, which is heard, however,
by himself only.-N. I. Sun.
In examining some portions of the
flesh of mallnrd duck, transmitted to
him by DR.. Cones, Prof Leidy found
abundance of parasites in the interstices
of the muscles, These were oval white
bodies, one or two lines long and
about one third of a line thick, which,
beneath the microscope, We're aSCertained
10 contain myriads OF fusilorm corpuScles,
like minute NaviCulp, measuring about
ne-titteen.thousandth of an inch in
length. Similar bodies were first discov-
cred in fishes by Prof. J Miller and de
scrlbed by him as parasites, under the
name of Psorospems. They have since
been repeatedly observed in fishes and
usually regarded rs vegetable parasites
Prof. Leldy was not aware that any such
organisms had been previously detected
IN birds. Though the mallard is not
| tish.eating bird, rs rule, the individual
may have become infected by swallowing
Il fish affected with these Organisms
Nee York independent
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