The weekly messenger. [volume] (St. Martinsville [i.e. St. Martinville] La.) 1886-1948, 1889-09-14
SCIENTIFIC AND INDUSTRIAL.

One Of the scientific uses Of the Eifel
Tower will be to waugh the moon.
The record OF meteorological observe.
lions kert at the Paris Observatory was
begun in 1866.
Not only ate h,tRan beings black or
6ark in hot climates, but other animals
vary in lie rierner.
Power obtained from d fall of water
mile distant is to be used for lighting the
tower of Scgor5s in Spain
The electric Light from the Eiffel Tower
was turned on disabled boa. in tie
river, enabling the crew to save both boat
and cargo.
Experiments made on the dog and
rabbit show generally that the quantity
of water Is less in the venous than in the
srteziA blood.
Fly-vheels with rims of steel wire are
row made in WestphaEa, and may be run
three times Sho speed of cast-iron wheels,
@alch AFRO limited to about forty yards per
second for the rim.
Professor j. P. Finley gives the width
Of the path OF destruction in tornsdoes,
es determined from the records Of eighty.
eight yea-s, at from ten to 10,5s0 feet,
the average being 1859 feet.
The'Insect House OF the Geological So
ciesy Of London Is said to be the only
place where An attempt is raade to attract
public attention to the various and won
dcsiul groups of the insect family.
From the general appearance of the
Vegetation, together with discussion of
the origin and relations of the fora, it is
concluded by eminent botanists that
Greenland is rot European province
rom the point Of view Of botanical geo2.
raphy, but has rearer relations to Amer
lea.
Oil collects on the outside of lamps,
bscalrse of the capillary attraction of tie
wick, which draws it Up from the inside,
ard allows it to run over the top Of the
tube in which the wick is placed. To
prevent this, turn the wick down below
tae top Of the wick-tube when the lamp
Is not In use.
Dry wood gives hotter fire, and is
moro economical to burn than green wood,
Because the latter contains more water,
and large part of the heat of the fire
is wasted in converting it into steam,
which passes off up the chimney, thus
carrying the heat into the outer air,
where il Is wasted.
The British Museum contains what are
probably the oldest pieces of wrought
iron now known as a sickle blade found
by Belxoni Under the base of sphinx in
K.rhac, near Thebcs; blade found by
CelS.el WISE Embedded in the masonry
q the great pyramid, and portion of q
crbss.odt saw exhuned at Ninrod by
tayssd. - s'a7%.-,yr ~,o-e
J. E. Thickston, well known scier.
tist and astronomer, believes that the
spaces within the earth's crust made
vacant by the withdrawal Of natural gas
viii be filed up By air, which, coming
in contact with the remaining gases, will
cause 81 explosion that may throw into
the. air the whole country between Lake
Erie and the Monongahela River.
An experienced engineer says belts Of
light color should be selected in prefer
encs to darker ones. Superior betting
having an un1istakable light buff color
indicates that it is oak tanned and that
the leather has been thoroughly washed
This removes all matter except the FIBRE
THIS light color is an Indication that only
the best quality of grease has been used.
An inferior quality of grease rot only inn
pairs the quality of the leath-r but dark
n,n 40 nolnr