Orange County observer. [volume] (Hillsborough, N.C.) 1880-1918, 1889-07-20
SCIENTIFIC AND INDUSTRIAL.

American yellow pine IS a great favor
lie Ter wooden pavements in Berlin.
Tt Westinghouse alternating electric
current i said to have killed twenty per-
sons.
\ scheme is en- foot FOR the holding Of
az international electrical exhibition next
year in Edinburgh.
To- i i strong narcotic and contains
AZ alaaloid known q theme, which is the
actlEe principle Of caffeine.
Paper a, tough as wood il said 10 be
made By mixing chloride of zinc with the
pup III course of manufacture.
Locomotives to be run by soda are to
he introduced in Minneapolis where steam
engines are forbidden for street use.
The latest railway signal indicates au-
tonlaficaliy the time that has elapsed,
up to twenty minutes, since the last train
| passed it.
Quartz is said to be very useful as an
5nSulator III c~lectrostatic apparatus. as
the troublesome sulphuric acid can then
be dispensed with.
Markings gun fires 700 shots per min
ute. 1t was offered to the American
Government but was declined. Now the
British Government has control Of it.
The English service Journals state that
satisfactory experiments have been made
in the application Of volatile hydra car
bons in place Of water for producing
power.
Petroleum., which has been used 4for
steam, IS now rapidly coming into vogue
for heating, melting and the working Of
metals.
Every book drawn from a public library
should be disinfected when returned.
Ii bank bills can carry and spread cpl
denies public books are surely unsafe I'm
less diSinfected.
IN improved headlight for locomotives
has been designed. 1t has an adjustment
which makes it possible for the engineer
to conveniently direct the light, as he
may desire, to various points Of the line.
The worst YOU can do to your face,
next to rubbing on poison, is to have the
barber shave you close. The English
doctors have protested 50 vigorously that
no English barber darcs scrape the cuticle
Of Il customer.
Zoologist. will be interested in the ex-
hihit Of the principality of Monaco at tn,
Paris Exhibition, rs all the implement.
used by the Prince in his dredging ex-
periments are to be shown, with nurner
Gus specimens Of deep-sea fauna.
The chrotograph isa pencil manufac-
tured in Germany for writing on til,
kin, It is malcrin various coIors, ant
affords legiblc writing, which can bs
easily removed without the use of water
It Is designed for the use of physicians.
70 make memoranda upon their patients
The new powder which isnow used il
the German army for sitting into tn
shoe, and stockings of the foot Soldier.
consists Of three parts Of salicylic acid
ten Of starch and eighty-scven Of pulver
led soapstone. The mixture keeps tn.
feet dry, prevents chatting and rapid,
heals sore spots.
The regal red poppy" has recent,
been found to have the value power o
binding with its roots the soil in which,
grows in such a manner that it will prov,
most valuable in supporting 'embank
ments. Already several French engineer
have undertaken the sowing Of raiiwa,
embankments with peoples.
Coal-tar. formerly a troublesome vast,
# the gas industry, affords US about six
teen distinct yellow %colors, about lively,
oranges. more than thirty reds, abou
sixteen blues, seven greens, nine violet
and a number Of browns and blacks, be
sides 7niStures OF compounds, producin.
an almost infinite number Of shades ans
tones Of color.