Savannah morning news. [volume] (Savannah) 1868-1887, 1886-06-07
POPULAR SCIENCE.


Oil Of lavender will drive away flies.
DR.. Phipson, in a German scientific
journal. advocates the use of sugar as
beneficial article of food.
If paper has beer=laid under carpets all
dustmay be- easily emoved with it. More
over, greater warmth il secured by using
carpet lining, or even old newspapers uE-
der carpets
st. Peters Cathedral, just finished at
Moscow has five cupolas, aud 800 pounds
OF gold were used in Overlayng them. The
doors of the temple cost $4,000, and the
marble floors 81 800, 900.
Prof. y. 5. Shaler is authority for the
statement that $4,000 square miles Of ter
ritory eastof the Mississippi now covered
by swamps might easily be drained and
turned into fertile lands.
1t was found by exact measurement
that chimney near M3rseilies, France
Lilo feet hiIn and feet in diameter at
the top-reachod a maximum oscillation
OF inches during high wind.
DR.. BurneY Neo, OF London, reports the
curious observation that there are per-
sons who usually drink tea without iu-
jury, but IN whom when in a depressed
mental condition It occasions indigestion
and palpitatiOn Of the heart.
In the ntrates of Peru, in which iodine
exists as an iodate, Muntz finds also
brOmine as bromate. Not only potas-
SUM iodate but the bromate and even the
chlorate are educed rapidly in presence
of the act i've agents Of tae soil.
The simplest and least expensive
method FOR removing saltpeter emulation
from brickWork when the etllorescence rs
in position whore the sun and W md donot
have free access is to wash it OF with d.
luted bydroc orc or common muriatic
acidOt commerce. About half a pound of
the acid is used with an ordinary pailiui OF
water, the application being made with "A
sponge.
new and rather curious application of
the steam-whistle has been made at the
Jacksonville (Il.O Institution for the
Deaf aud Dumb. A whistle 1 feet il
length and T. inches in diameter has been
placed on the pinnacle of tue boiler house
and is used as a : gnat TO awaken the IN
mates of the institution, ETC., who, al
though t1ey cannot hear. are made sens
BILE Of its var Gus signals by the vibration
IL gives to the buildings.
An neutrality-suspicious. showing the
influence Of electricity on the growth of
roots, nas been made in Germany By
Prof. Hodefieiss. Plates of copper were
thrust upright into the placed zinc plates
about 100 feet distant, an electric battery
being thus formed, with the earth between
~
potatoes aud beets planted between such
plates gave an increased yield-beets 10
per cent, potatoes, - per ceuJ.-aS com
pared with other parts OF the same field.
John Marshall, f. r. :, says that if
person, especially girl or woman, whose
clothing is on fire, will lie down in
horizontal position the flames will become
tor the time being nearly harmless, and
time will thus be gained for furtaer ac-
| ton. The reason Tor this needs no eXpla-
! nation. He further recommends that there
| be at every school an example of this fact
| at least once every term by means OF two
! upright models, prepared alike and set on
/ fire simultaneously, the one being thrown
! over after Two seconds and the olher al
ter thirty seconds. The suggestion is a
! good one.
j An improvement is noted in grinding
stones and emery wheels, by which the
wheel Is given recIprOcating lateral
motion IN addition to its rotation. Every
one has noted the advantage of moving a
tool from side to SIDE on a hand grind
stone, 50 as TO equaiize the attraction on
| the different parts OF the edge. IL il found
that by making the griudstOne move, and
keeping the tool still, a more perfect re
suit is attained, while the detached parti-
cles of steel have an opportunity to drop
! of the grindstone instead OF being crushed
! int0lt, and the wear Of the stone and the
heating OF the tool are both greatly dimin-
/ ished.
Having recently made an assay OF a
1 gold ore rom the vicinity OF Constantine
| pie, DR.. A. b. GrIfiiths believes tbat the
/ following remarks may interest metal
lursical chemists; Inc gold is dissent
mated in very small pieces here and there
throughout quartz aud eartby matrix.
] The ore comes from mines Wh{Hn baVa uat
been worked for centuries, and were
thought 10 be- exhausted OF gold. The
assay. both by dry and wet me mods, OF a
carefully selected sample, gave ounces
! II pennyweights cf goid per ton OF ore.
! Inc gold in the ore contains iron and cop
per, and very small quantity OF silver.
| rhe matrix is composed chiefly OF quartz
| but contains calcium carbonate, ferric OK
! ide, allUmiHd and lime.