The Calhoun chronicle. [volume] (Grantsville, W. Va.) 1883-1984, 1902-01-28
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y pneumatic fan for cooling passen-
gen and sleeping cars has been de-
signed by the superintendent of one
of the Western roads. The compressed
air for its operation is taken from
the air-brake system. 1t is asserted
the amount of air required is so small
as to be hardly missed and not SUI
ficient to interfere with braking opera
tions. 1t is designed for use on trains
not equipped with storage batteries
of dynamo for electric supply.
The increase i'm the number of high
buildings has caused a largely in
creased use of ribbed glass in win
dows, and in the production of inn
proved varieties of such glass The IL
Elimination of dark rooms. shut in by
high walls, is materially increased by
the reflection from the many facets
of the glass of light that would other
wise pass the windows without pene-
trating the interior. This "diffusing
glass has introduced new era in
interior lighting.
Machine made lace of late is re-
ceiving considerable attention i'm this
country. and already four large con
Germs are engaged i'm its manufacture
Skilled operatives. who in the major
ity of cases foreigners, are much in
demand, and the supply is said to be
far from adequate. Nets and some of
the heavier laces turned out are often
remarkably good. while most effective
gallOons and embroidered mousselines
of American make are to be found in
the large stores. Those most familiar
with the business consider this a
growing industry.
\ cheap and rapid method for con
centrating the enormous quantities of
blood collecting in abattoirs is de
scribed by its inventor in the Tech.
nische Rundschau. The blood is in
jected in n finely pulveriZed state into
an oven-shaped chamber, open ut the
top, and brought into contact with
current of hot air ascending from be-
low. All the water is evuposated in
this manner. and the blood powder
is carried to the receiving chamber.
According to the inventor. the powder
thus obtained is tasteless and contains
14.S per cent. of digestible albumen.
Incandescent lamp filaments made
according TO the invention of Mr.. @.
Kellner, of Vienna, are said to possess
an extraordinary efficiency The fila
ment may be made by two methods.
In the first the thread is made under
pressure from powerful infusible
metal such as thorium, which is then
oXidized specifically by making it the
anode in an oXidizing electrolyte bath.
The second method is to form the
threads from metallic oxides which
have the property of becoming mean
descent at comparatively low temper
atures, and using as a cemcnting ma
terial the least possible amount of
cellulose dissolved in chloride of zinc.
Briefly told the story of the Black
Hole" of Calcutta is as follows: One
hundred and forty-siX persons were
thrown into a room the size of an
eighteen-fOot cube Mt s o'clock in the
evening. This room contained door
and two small windows. The latter
were open. \ small calculation will
show that each OF these 146 had in this
room about thirty light cubic feet OF
air space. and set by Ills D. m. all
were dead but twenty-six. most of
whom afterwards succumbcd to fever
The only causes operating 10 AFFECT
this in the case OF the Black Hole"
was carbon dioXide and the exhaustion
of the oxygen OF the air There were,
however, TWO small windows TO effect
ventilation