The Lancaster ledger. [volume] (Lancaster, S.C.) 1852-1905, 1893-10-18
SCIENTIFIC AND INDUSTRIAL.


A new telephone transmitsa whisper
to distance of 500 miles, and keen
ear, if familiar with the speaker, can
recognize the voice
A thrifty resident of Atlantic CITY.
N. -, Is making money by shipping
barrels of salt water to various parts
oil the country to persons who desire
to take saltwater dip in their own
bathrooms.
The male wasps and hornets are the
scavengers of the community, being
required to keep the nest clean. They
remove the bodies of the dead, and
when these are too heavy they bite of
the head and divide the body again at
the waist.
Experiments made by the scientist,
appointed for the purpose by the
French Government, show that tho
resistance OF the atmosphere to tho
motion of n high speed train often
amounts to half the total resistance
which the locomotive must overcome.
About the last thing done to silver
ware IN the factories is to cleanse the
surface of all grease and other materia,
used in the polishing, process that
usually involves deal of hard labor.
A mechanic who had noted the expeu.
sive character of this work invented n
bath IN which the foreign substances
that cling to the surface of silverwaro
are easily and quickly removed. From
this bath the silverware comes clean
and brilliant. The employers of the
INV entor have patented the process
with his consent, and the patent is re-
garded as valuable property.
1t has generally been assumed that
considerable time elapsed, say from
three to nine minutes, from the time
when the blood left the right side of
the heart, trHversed the whole system
and then again returned to tho start
ing point Professor Dalton's experi-
ments make it appear that the time is
much shorter than TINT. Dozens of
carefully tabulated tests, SAYS Pro
fessor Dalton, show that the blood of
man makes II complete circulation
once every fifteen TO twenty. five
seconds, according to the physical con-
ditions of the subject Experimental
upon.
The sting of a'bee is composed OF
two spears of polished horn held in u
sheath. One gets Il notion of the
sharpness of the weapon by very
simple comparison. The edge of n
very keen razor, when examined under
good microscope, appears as broad
as the back of thick knife, rough,
uneven and full of notches. An cx.
ceedinGly small and delicate needle
similarly scrutinized resembles n
rough bar from II smiths forge. The
sting OF II bee, viewed through tho
sam" instrument, shows newless
polish, without the least blemish or
Inequality, ending i'll point.
Mineral water syphons commonly
in use arc subjected when full to q
pressure of about 100 pounds per
square inch. The best of them are
made in Germany and tested up to 200
pounds per square inch, but the most
careful makers of mineral waters test
their syphon bottles up to 300 pounds
per square inch. The glass. after
har'ag being placed in ice.cold water.
is suddenly plunged into boiling
water. The loss from breakage in the
testing process is very great. A
syphon bottle has bcen known to keen
pure and sweet for seven years a small
quantity OF mineral water accidentally
lett unused This accidental test OF
water aud bottle was thought highly
satisfactory,