The Abbeville press and banner. [volume] (Abbeville, S.C.) 1869-1924, 1902-04-23
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An acre of grass land, according to
experiments. gives OF not less thap
g4OO quarts Of water in twenty'fouf
hours. and an acre Of sunhowers
would give q relatively greater guam
tisy. In fact, swamps have been re;
claimed and malarial marshes rem
dered inocuous by planting sunfowers
or eucalyptus trees. which are grea'
pumpers of water. and also exert otheI
influences counteracting baneful con-
ditions of air, earth and water.
Mount St. Elias Is $500 metres IN
height, Mount Fairweather is 4SsO,
and Mount Logan Is 5947. There Is
a higher peak still that has never yet
been climbed. 1t lies In sixty'three
and one-half degrees Of north latitude
and in 155 degrees Of west longituae
and has been called Mount Mckin'
lev. Its altitude Is CLIO metres or 10
o26 feet, and will probably remain un'
climbed for many years owing to Ns
remoteness and to the Inherent olm'
culties Of the ascent.
In weather forecasting. no CLOUDS
are worthy Of such attention rs the
cirrus clouds, which attain q greater
elevation than any others. averaging
in summer q height of FIVE or six miles
above the earth. Their sudden ap-
pearance In q clear sky Is generally
a signal of foul weather. especially
when their streamers have an upward
tendency, for this indicates that the
clouds are falling. After heavy
rains, on the other hand. the forma'
ton OF these clouds Is often q sign
Of improvement.
That the waves Of light produce a
mechanical pressure. or push. was
claimed years ago by Maxwell. but
he made no experiments to prove bis
theory. Experiments Of that kind
have been recently made. however. by
Professor Lebedew, Of Moscow, who
uses a radiometer somewhat resemb'
ling the Cro0kes instrument, with Its
revolving vanes. His device. however.
has q larger and more completely ex-
hausted bulb. from which Is excluded
the heating effect on which the move
ment Of the Crookes vanes depend.
When the light falls on the vanes they
are driven before It. and the pressure
thus revealed comes within ten per
cent. OF that calculated by Maxwell.
The effect Is in proportion to the
energy or the light. and Is wholly In
dependent Of its color.
The complete theory Of nerve slim.
ulation recently formulated by Pro-
fessor Mathews. Of the University Of
Chicago. Is concisely stated as fol.
lows: The irritability Of nerve proto-
plasm varies inversely with the sta.
bility of the hydrosol state Of its col.
loids. Stimulation Is gelatioD. and Is
brought about by negative electrical
charges. Chemical stimulation Is
really an electrical stimulation due to
the charges which the ions bear.
Negative charges stimulate. positive
charges prevent stimulation. The
nerve impulse is due to q progressive
precipitation Of colloids by negative
charges. the negative charges being
regenerated by the precipitation of
each succeeding mass Of colloids. The
negative variation. in other words,
stimulates each succeeding segment
Of the we. and Is regenerated by
the CT . 1t produces In the colloids.
Anaesthetics prevent precipitation. 1t
is not the valence. In ultimate analy.
sis, which produces stimulation. but
the movement Of the charge. chemical
stimulation being thus identical with
stimulation by light.