evolution and ethics and other essays-µÚ17ÕÂ
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stock¡¡of¡¡substance¡¡capable¡¡of¡¡yielding¡¡energy¡¡in¡¡consequence¡¡of¡¡a
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operations¡¡mentioned¡¡may¡¡be¡¡figuratively¡¡said¡¡to¡¡be¡¡incorporated¡¡in
it¡£
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further¡¡imagine¡¡that¡¡the¡¡propriety¡¡of¡¡the¡¡application¡¡of¡¡the¡¡term
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question£»¡¡inasmuch¡¡as¡¡it¡¡is¡¡easy¡¡to¡¡prove¡¡that¡¡the¡¡essential
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work¡¡he¡¡performs¡¡£¨and¡¡he¡¡does¡¡a¡¡good¡¡deal£»¡¡if¡¡only¡¡in¡¡mere¡¡locomotion£©
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It¡¡is¡¡plain¡¡that¡¡the¡¡place¡¡of¡¡mother£»¡¡as¡¡the¡¡supplier¡¡of¡¡vital
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modify£»¡¡and¡¡render¡¡easily¡¡accessible£»¡¡the¡¡vital¡¡capital¡¡which¡¡already
exists¡¡in¡¡the¡¡green¡¡herbs¡¡on¡¡which¡¡they¡¡feed£»¡¡but¡¡in¡¡such¡¡a¡¡form¡¡as¡¡to
be¡¡practically¡¡out¡¡of¡¡the¡¡reach¡¡of¡¡man¡£
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raw¡¡flour¡¡of¡¡which¡¡it¡¡is¡¡made£»¡¡but¡¡raw¡¡flour¡¡does¡¡not¡¡answer¡¡as¡¡an
article¡¡of¡¡human¡¡diet£»¡¡and¡¡biscuit¡¡does¡£¡¡So¡¡the¡¡usefulness¡¡of¡¡mutton
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sheep¡¡gets¡¡them¡¡out¡¡of¡¡grass£»¡¡we¡¡cannot¡¡live¡¡on¡¡grass£»¡¡but¡¡we¡¡can¡¡on
mutton¡£
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terrestrial¡¡natural¡¡bodies£»¡¡in¡¡so¡¡far¡¡as£»¡¡under¡¡the¡¡influence¡¡of
light£»¡¡they¡¡possess¡¡the¡¡power¡¡to¡¡build¡¡up£»¡¡out¡¡of¡¡the¡¡carbonic¡¡acid
gas¡¡in¡¡the¡¡atmosphere£»¡¡water¡¡and¡¡certain¡¡nitrogenous¡¡and¡¡mineral
salts£»¡¡those¡¡substances¡¡which¡¡in¡¡the¡¡animal¡¡organism¡¡are¡¡utilised¡¡as
work¡stuff¡£¡¡They¡¡are¡¡the¡¡chief¡¡and£»¡¡for¡¡practical¡¡purposes£»¡¡the¡¡sole
producers¡¡of¡¡that¡¡vital¡¡capital¡¡which¡¡we¡¡have¡¡seen¡¡to¡¡be¡¡the¡¡necessary
antecedent¡¡of¡¡every¡¡act¡¡of¡¡labour¡£¡¡Every¡¡green¡¡plant¡¡is¡¡a¡¡laboratory
in¡¡which£»¡¡so¡¡long¡¡as¡¡the¡¡sun¡¡shines¡¡upon¡¡it£»¡¡materials¡¡furnished¡¡by
the¡¡mineral¡¡world£»¡¡gases£»¡¡water£»¡¡saline¡¡compounds£»¡¡are¡¡worked¡¡up¡¡into
those¡¡foodstuffs¡¡without¡¡which¡¡animal¡¡life¡¡cannot¡¡be¡¡carried¡¡on¡£¡¡And
since£»¡¡up¡¡to¡¡the¡¡present¡¡time£»¡¡synthetic¡¡chemistry¡¡has¡¡not¡¡advanced¡¡so
far¡¡as¡¡to¡¡achieve¡¡this¡¡feat£»¡¡the¡¡green¡¡plant¡¡may¡¡be¡¡said¡¡to¡¡be¡¡the
only¡¡living¡¡worker¡¡whose¡¡labour¡¡directly¡¡results¡¡in¡¡the¡¡production¡¡of
that¡¡vital¡¡capital¡¡which¡¡is¡¡the¡¡necessary¡¡antecedent¡¡of¡¡human¡¡labour¡£*
Nor¡¡is¡¡this¡¡statement¡¡a¡¡paradox¡¡involving¡¡perpetual¡¡motion£»¡¡because
the¡¡energy¡¡by¡¡which¡¡the¡¡plant¡¡does¡¡its¡¡work¡¡is¡¡supplied¡¡by¡¡the
sunthe¡¡primordial¡¡capitalist¡¡so¡¡far¡¡as¡¡we¡¡are¡¡concerned¡£¡¡But¡¡£§156£§
it¡¡cannot¡¡be¡¡too¡¡strongly¡¡impressed¡¡upon¡¡the¡¡mind¡¡that¡¡sunshine£»¡¡air£»
water£»¡¡the¡¡best¡¡soil¡¡that¡¡is¡¡to¡¡be¡¡found¡¡on¡¡the¡¡surface¡¡of¡¡the¡¡earth£»
might¡¡co¡exist£»¡¡yet¡¡without¡¡plants£»¡¡there¡¡is¡¡no¡¡known¡¡agency¡¡competent
to¡¡generate¡¡the¡¡so¡called¡¡¡¨protein¡¡compounds£»¡¨¡¡by¡¡which¡¡alone¡¡animal
life¡¡can¡¡be¡¡permanently¡¡supported¡£¡¡And¡¡not¡¡only¡¡are¡¡plants¡¡thus
essential£»¡¡but£»¡¡in¡¡respect¡¡of¡¡particular¡¡kinds¡¡of¡¡animals£»¡¡they¡¡must
be¡¡plants¡¡of¡¡a¡¡particular¡¡nature¡£¡¡If¡¡there¡¡were¡¡no