最終更新日：2022/12/24
When a ſmall quantity of any gypſum is melted together with borax, the glaſs becomes colourleſs and tranſparent; but I have found ſome ſorts of alabaſter and ſparry gypſa that, when melted in ſome quantity with borax, yield a fine yellow tranſparent colour, reſembling that of the beſt topaſes. This phœnomenon might probably happen with every one of the gypſeous kind.
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元となった例文
When
a
ſmall
quantity
of
any
gypſum
is
melted
together
with
borax,
the
glaſs
becomes
colourleſs
and
tranſparent;
but
I
have
found
ſome
ſorts
of
alabaſter
and
ſparry
gypſa
that,
when
melted
in
ſome
quantity
with
borax,
yield
a
fine
yellow
tranſparent
colour,
reſembling
that
of
the
beſt
topaſes.
This
phœnomenon
might
probably
happen
with
every
one
of
the
gypſeous
kind.
