BAROMETER n.
lations of the mercury, and suspended in gimbals from an arm or support on shipboard. -- Mountain barometer, a portable mercurial barometer with tripod support, and long scale, for measuring heights. -- Siphon barometer, a barometer having a tube bent like a hook with the longer leg closed at the top. The height of t…
BRISTOL n.
t Bristol. -- Bristol stone, rock crystal, or brilliant crystals of quartz, found in the mountain limestone near Bristol, and used in making ornaments, vases, etc. When polished, it is called Bristol diamond.