Orange County observer. [volume] (Hillsborough, N.C.) 1880-1918, 1890-02-15
POPULAR SCIENCE.

The eClntillometeT. the ln'enAon OF
Belgian scientist, which Is used Cor meas
urinc the scinsiliation OF the stars, IL
now utilized by meteorologists as an aid
to the prediction OF the weather.
Soap bubbles blown with newly gen.
Grated hydrogen gas have been found TO
act as electrical condensers. the liquid of
which, when broken, exhibited mega
tive charge Ii is suggested that this fact
explains the So called fireballs sometimes
seen during thunderstorms.
The statistics : therei ny the United
States Sanitary G. nmission, concerning
he height and other proportions Of nearly
| a quarter Of million Of soldiers, appear 70
! indicate tha. young men arr not, on the
average, physically adult un,li thes attain
he age o tven-y-e,yh- years.
! scottish mechanic has invented ; new
.anp to- 5hips, being cross between {
candle and paraffinc lamp, bay posses
s!nc I'll -he advantages and none o the
defects OF either. there being no liability
IF explosion or Of flooding the place with
oil. in case Of breakare, and there Is no
waste.
As general rule, it is said to be very
difficult matter TO gage the speed o'
fishes. The fast fishes are trlm and
pointed in shape, with their fms close te
their bodies The dolphin and bonito arr
thought to he the fastest and, although
/ their speed is not Known, they arc full.
Ncapabc OF twenty miles an hour.
i The use of luminous paint ls randi'
growing in this country; England ha
heretofore had the monopoly of luml
uoue paint. which il has sold at S3 pc
pound. Other countries, however, hav
entered into the competition, and Austrl
is now producing u paint when Is place
on the market at fifty cents PER T'ounc
II Is said to be made from roasted Gvs,C
shells aud sulphur.
Late researches have shoan that III
duration Of lightning flash IS not u
6nitesimal. as has been generally 81,
noced hut that the fash lasts a measure
= able time. For instance II camera
!, set IN rapid vibration and the plate r.
IS exposed so as to receive the 1npresssf
40 of the flash, it IS found that the impre'
. sions appear widened out on the NEGATIVE
n showing that the negative has NOV
Il iuri.r the time the fash WAS II eSl'
a encc.
in A simpleStove for warming r'o1ns
ne means of sol2r heat has been contriv
no bv ProfessoE Morse 1t consists OF
Of ,,,alloy box. having bottom OF c"r'
it 91.sd non aad glass iop. VIII
10, this device is placed outside bu'ldin
ity where the sun can shine directly INTO
it. the rave pass through the glass and
aid absorbed bv the metal, raising II to h
or temperature and warming the ar q
,ok box The air thus heated IS convey
70 into the room
on In the biological department =
M University Of Pennsylvania txFe3I'f
)er, arc being coDduted IN regard I" fht
the cessee OF the mind. Three OF the p
{ tip.l kinds OF experiments no" bt
III mao.., arr ttCse to measure shA nASosox
ION. .ensaio.aa Of sight. so1aA essa r-~n
VIZ those to measure ,ne time taken W c&p
KS !. sensation, and tho,e - measure the I
:" taken to receive al III. rcssion tAIo'
'-Hs the eve. etc. The meas used To IN
ais tasse iuves,ix xatloos are weighted "a'
ii'' sibbst-.h4peI la4>h1aes, piece. oi
1oos svs~osl - faA sSou toaeAAo& . =
pivoted hammers. etc.