g., ice at or below 0 deg. may
be liquefied by strong pressure. A brittle body is simply one which does
not possess the property of flowing under the action of pressure.
* * * * *
HYDROGEN AMALGAM.
Hydrogen, although a gas, is recognized by chemists as a metal, and when
combined with any solid metal--as in the case known to electricians as
the polarization of a negative element,--the compound may correctly be
termed an alloy; while any compound of hydrogen with the fluid metal
mercury may with equal correctness be termed an amalgam of hydrogen, or
"hydrogen amalgam." The efforts of many chemists and mining engineers
have for many years been devoted to a search for some effective and
economical means for preventing the "sickening" of mercury and its
consequent "flouring" and loss. Some sixteen or more years ago,
Professor Crookes, F.R.S., discovered and, after a series of
experiments, patented the use of an amalgam of the metal sodium for this
purpose. He made the amalgam in a concentrated form, and it was added
in various proportions to the mercury used for gold amalgamation.
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