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20 MET
ChronO-lucter, XPOVOS, chr'dnos, time. An instrument
for the exact n1cnsuration of time.
Dia-meter, a"., dia, through. The line that passes
through the centre of a circle.
Dynamo-meter, from ouVafUS,. dunamis, power. An
instrument by which is measured the comparative
strength of men and animals. It is in use at the
American gymnasiums for ascertaining the relative
powers of the gymnasts and the increase of power
gained by exercise.
Eudio_meter, EtJOtct J eudia, 'purity of air. An instrument
to measure the purity of ai~ .
Ge-o-metry, )'11, ge, the earth. Geometry' signified,
originally, the art of measuring the earth: at present
it is used to denote the science of extension, or ex...
tended things, that is, of lines, surfaces, and solids.
The Egyptians are asserted to have been the first
inventors of Geometry, and the annual inundations
of the Nile to have been the occasion; for that river
bearing away all the bounds and landmarks of men's
estates, and covering the whole face of the c~untry,
the people were obliged to distinguish their lands, by
the consideration of their figures and quantity; and
thus by experience and habit formed a method or art
which was the origin of Geometry.
Hydru-meter, t\awp, It-ltdor, water. An instrument to
measure the specific gravity of water. a~d other fluids.
Hygro-meter, tJ/,pos, ll-v..gr'&s, moist. An instrument to
measure the degrees of mo'isture in the air.
Mano.meter, /Aavos, manos, thin. An instrument to·
show the rarity or density of the air.
:I!'Hctrc, from /AETpOV, 71lel1'On, a nieasurc~ Speech confined
to a certain' number of harmonical syllables.
Rhythm respects time only, and comprehends music
and dancing as well as poetr)": metre respects the