eclairage
quantité
de
gaz
donnée
par
un
chaldron
=
p.c.
anglais
Cannel
coal
(Scotish)
19890
Lancashire
Wiggan
Coal
19608
yorkshire
cannel
coal
18860
Staffordshire
coal
(mean)
10158
Gloucestershire
coal
13844
Newcastle
coal
16007
D’après
accum
le
charbon
de
Newcastle
donne
suivant
les
espèces
de
16876
à
8348.
Gaz
Common
one
Gallon
on
common
Whale
oil
produced
about
90
cubic
feet
of
gaz
an
argand
burner
require
1
½
C.foot
of
gaz
per
hour,
and
give
a
light,
equal
in
intensity,
to
two
argand
Lamps,
or
ten
mould
candles,
p
our
the
pound.
1
pound
of
coal
for
Give
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