The Nezperce herald. (Nezperce, Idaho) 1900-1957, 1908-10-29

kNAxCienCe
NMfnvesSition

Metals get tired as well as living
things. a scientist declares. Telegraph
wires are better conductors ON Monday
than Saturday. on account OF their
Sunday rest. aud a rest OF three weeks
adds 10 per cent to the conductiyity OF
= wire.
AIKEN Is ;a> name given 20 a new
metal, which Is composed OF two parts
OF aluminium and one part OF zinc. II
Is said 10 equal east Iron In strength.
but Is much more elastic. Alien Is
superior because Il does not rust and
takes a high polish
The singulaF phenomenon OF hard
steel being cut By a rapidly revolving
disk OF soft steel has been somewhat
puzzling A microscopic examihati0n
BY an English engineer. r. W. Hartford.
has now shown that the metal acted
upon Is heated nearly or quite 10 the
melting point OF steel. but only at the
1oint OF contact with the disk.
A section Of the Canadian Northern
Railway, running northwest from Sud
bury and crossing the yermilli0n River.
10 unique IN that Il is ballasted with
gold Every yard OF the gravel used
for ballast has been found 10 contain
from 80 cents worth 10 81 worth OF the
precious metal IA the shape OF hne dust,
and a syndicate Is Installing machinery
for It's extraction.
There was recently brought 70 the
British museum about half a peek Of
stones asserted 10 have been taken from
the stomach Of an African elephant.
The stones ara angular and unworn.
Other instances OF the same nature are
knoNn 20 hunters The man who gave
the curiosities 10 the museum has dem
onstrated the exlstenoe OF the stone
swallowing habit IN crooodilex
During the year 1907 the Nile reach
81 the lowest level know IN Egypt since
1877 and but for the existence OF the
great dam a. Assnan and the vast vol
uns Of water impounded By II 10 sup
pienenf the Loss Nile durlng the season
Of drought the country would have been
plunged into the horror OF a famine
The year 1907 wa the eighth successive
lean year. % far a. the Nile food was
oneerned.
So great IL the part played By birds
Ia disseminating seeds ard IN protect
ing plants b. the destruction % noxious
insects that n. ". Hanahaw reaches
the somewhat astonishing conclusion
skas 40 ~ kl-fa -. .wf.~..f..aA - Il
would sucoesafui Agriculture b.
come impossible. but ths creates part
o. the Vegetation o. the earth would
b. destroyed A permanent
reduction In the bird population. be
says. could not but have disastrous con.
ssqnsncrA
One OF the most remarkabie OF the
high flights achieved By the FREE bal
IoonA now employed In many countries
Tor scientific exploration o. the upper
air. was made on July -. 1907. near
Brusseis The tandem balloons left the
o. uccie at ! O'Clock IN the
morning. and one hour n ak minutes
atsr they had attained an elevation.
u indicated By the self recording
'aromrteE Of almost exactly isn miles
~ that point the upper balloon burst.
md the flight was arrested AZ the
Of about ~ miles. as usual. the
Of the shcrmosncter was arrested.
nd q sudden ria % ~ degrees oc
urrcd In the temperature AZ n little
css than sd miles an isothermsl zone
rns encountered. above which another
ise q temperature began. and contln.
ed until the balloon burst. The last
temperature recorded WAS shout ~
egrees Fahrenheit I,