Daily inter mountain. [volume] (Butte, Mont.) 1881-1901, 1900-02-24

feet below sea-level. The METEOROLOGICAL
conditions are of unusual interest. The
barometer has a greater yearly range
Imam In any other spot known, the months
" averages for January being IL inchea
greater n those for July, and the
Mghest July temperature (11S degrees
tr) is one of the highest observed in
ASIA: The dryness of the air EQUALS that
of the Sahara. ~
IN the Laffas system of automaticallv
stopping railway trains, to prevent acct.
uents' a dock in the middle of the track
Is set Dy the signal man. This block has
a curved surface, which, when the signal
IS standing at danger, is so raised that a
lou with a little wheel makes contact
anu actuates the valve of the air-brake
paced either on the engine or one one of
tne cars. In a recent English test. a
Train OF an engine and nine cars. with ..
total weight of 100 tons, was rim, On a
igh downward incline. On touching,
NE ~ plock at a speed of 20 miles an hour,
the train stopped in 146 yards. at 20 miles
IN lou yards, and at 35 miles in 21O varde
ALtl-typhold NEGOTIATIONS made bv
Iro1. a. r. Wright among British troops
nv lnd1a seem to have given very prom
,sIns results. h total number of men
ulaier observation was II, 295. of WHOM,
$3.50 had been inoculated and S.4eO had
Iot, ana the inoculated were mostly
newly arrived young men, especially liz.
pc 70 typhoid fever, While the uninocn.
,ateu were manly more seasoned and
less susceptible individuals. Yet the per-
centage OF the uninoculated attacked Nv
!ypnold FEVER was 2.5, and among the
,lpoculaaeu 1t was OBS. The deaths were
TESS AFFECTED, having been O.34 per cent
among the uninoculated and % aronr
the inUculated, ""oAa
Inc Sh9n ma of - ooo1l1. = -
building detail that seems to be not vet
10y worked out. On the theory that
some projection ON THE blades should
slve 2 better grip of the water. f. 8.
and w. J. Orr have fitted two
Da.cehs on each blade, and in a small
cra1t tested in New Zealand waters the
effect Of the change has been to give an
Increase OF over l per cent in speed. The
same propeller was used, while the load
ana the number of revolutions of the
engine We're the same as before the adj
el.lolH oi the Dattens. Two channels are
formed by the battens, which are rough
~ L~-shaped, and the water is thus nre.
vented from slipping off in the usual
easy way. suitable setting of the bait
tens tends to throw the water in touvard
tne center, giving the propeller more
solld water to- act upon.
q sounds of earthquakes have re-
celVeu little attention. From a late
paper by DR.. G.. Dawson, it appears that
.ney approach the lower limit of audi.
olllty, and they are frequently distinct
70 some observers. while others eoualiv
alert near nothing. In EARTHQUAKES
among Englishmen sound is usually ner-
ceived before and after the shock. In
Japan even violent earthquakes are FREE
quently unnoticed by the ear. while
SOUND Is seldom heard after the shock
Inc conclusion being that the Japanese
ave inferior perception for deep SOUNDS.
Inc character and duration of the sounds
VARY 70 different auditors. A deep rum
ping. like that of a heavy wagon pass
lng' IS generally heard, but at the eni.
center OF the earthquake loud crashes
De distinguished, which further
away become rougher and more grind
ins' ana at a great distance may be SUBJ
, uueo mo a low and monotonous roll
llke INSTANT thunder. Earth-sounds
wiunout shocks. appearing to be earth
uuakes 700 weak to be felt, are some-
times heard. Earthquakes are supposed
10y Dr. DAWSON to be caused by the slip
ping on rocks along faults, and the sound,
gins Of the slides. :" 20"