fabre, poet of science-第16章
按键盘上方向键 ← 或 → 可快速上下翻页,按键盘上的 Enter 键可回到本书目录页,按键盘上方向键 ↑ 可回到本页顶部!
————未阅读完?加入书签已便下次继续阅读!
observing。〃
His passion for interrogating the Sphinx of life; everywhere and at all
moments; sufficed to fill his days from one end of the year to the other。
When some distant subject interested him; even on the most scorching days;
he would put 〃his lunch in his pocket; an apple and a crust of bread;〃 and
sit out in the hot sunlight; accompanied by his dog; Vasco; Tom; or Rabbit;
fearing only that some importunate third person might come between nature
and himself。
When he walked in his garden he would let nothing escape him; witness those
precise notes of an eclipse of the sun; and of the effects which that
phenomenon produces upon animal life as a whole。
While his children followed the progress of the moon across the sun through
a pane of smoked glass; he attentively observed all that occurred in the
countryside。
〃It is four; the day grows pale; the temperature is fresher; the cocks
crow; surprised by this kind of twilight which comes before the hour。 A few
dogs are baying。。。The swallows; numerous before; have all disappeared。。。a
couple have taken refuge in my study; one window of which is open。。。when
the normal light returns they will come outdoors once more。。。The
nightingale; which had so long importuned me by his interminable song; is
silent at last (7/26。); the black…capped skylarks; which were warbling
continually; are suddenly still。。。only the young house…sparrows under the
tiles of the roof are mournfully chirping。。。Peace and silence; the daylight
more than half gone。。。In the Harmas I can no longer see the insects flying;
I find only one bee pillaging the rosemary; all life has disappeared。
〃Only a weevil; the Lixus;〃 which he is observing in a cage; 〃continues;
step by step; without the slightest emotion; his amorous by…play; as though
nothing unusual were happening。。。The nightingale and the skylark may be
silent; oppressed by fear; the bee may re…enter her hive; but is a weevil
to be upset because the sun threatens to go out?〃 (7/27。)
He was no less curious concerning the resurrection of the sun; and every
time he made an excursion to the Ventoux he was careful not to miss this
spectacle; setting out at an early hour from the foot of the mountain; so
that he might see the dawn grow bright from the summit of its rocky mass;
then the sun; suddenly rising in the morning breeze; and setting fire;
little by little; to the Alps of Dauphiné and the hills of Comtat; and the
Rh?ne; far below; slender as a silver thread。
He took infinite pleasure too in drinking his fill of the sublime terrors
of the thunderstorm; which he regarded as one of the most magnificent
spectacles which nature can offer; not content with observing it through
glass; he would open wide the windows at night the better to enjoy the
phosphorescence of the atmosphere; the conflagration of the clouds; the
bursts of thunder; and all the solemn pomp with which the great purifying
phenomenon manifests itself。
But pure observation; as practised by his predecessors; Réaumur and Huber;
is often insufficient; or 〃furnishes only a glimpse of matters。〃
He had recourse; therefore; to artificial observation of the kind known as
experimentation; and we may say that Fabre was really the first to employ
the experimental method in the study of the minds of animals。
Near the field of observation; therefore; is the naturalist's workshop;
〃the animal laboratory;〃 in which such inductions as may be suggested by
the doings and the movements of the insects 〃which roam at liberty amidst
the thyme and lavender〃 are subjected to the test of experiment。 It is a
great; silent; isolated room; brilliantly lighted by two windows facing
south; upon the garden; one at least of which is always kept open that the
insects may come and go at liberty。
In the glass…topped boxes of pine which occupy almost the entire height of
the whitewashed walls are carefully arranged the collections so patiently
amassed; all the entomological fauna of the South of France; and the sea…
shells of the Mediterranean; an abundant wealth also of divers rarities;
numismatical treasures and fragments of pottery and other prehistorical
documents; of which the numerous ossuaries in the neighbourhood of
Sérignan; scattered here and there upon the hills; contain many specimens。
At the top; crowning the facade of glass…topped cases like an immense
frieze; is the colossal herbarium; the first volumes of which go back to
the early youth of their owner; all the flora; both of the Midi and the
North; those of the plains and those of the mountains; and all the algae of
fresh and salt water。
But it must not be supposed that Fabre attaches any great value to these
collections; enormous though the sum of labour which they represent。 To him
they have been a means of education; a means of organizing and arranging
his knowledge; and not of satisfying an idle curiosity; not the amusement
of one content with the rind of things。 In order to identify at first sight
such specimens as one encounters and proposes to examine; one must first of
all learn to observe and to see thoroughly; and to school the eyes in the
colours and forms peculiar to each individual species。
One may fairly complain of Réaumur; for example; that his knowledge was
uncertain and incomplete。 Too often he leaves his readers undecided as to
the nature of the species whose habits he describes。 Fabre himself; by dint
of criticizing with so much humour the abuse of classifications; has
sometimes allowed himself to fall into the same fault。 (7/28。) He has taken
good care; however; not to neglect the systematic study of species; witness
his 〃Flora of the Vaucluse〃 and that careful catalogue of Avignon which he
has not disdained to republish。 (7/29。) The truth is that 〃if we do not
know their names the knowledge of the things escapes us〃 (7/30。); and he
was profoundly conscious of the truth of this precept of the great
Linnaeus。
The middle of the room is entirely occupied by a great table of walnut…
wood; on which are arranged bottles; test…tubes; and old sardine…boxes;
which Fabre employs in order to watch the evolution of a thousand nameless
or doubtful eggs; to observe the labours of their larvae; the creation and
the hatching of cocoons; and the little miracles of metamorphosis; 〃after a
germination more wonderful than that of the acorn which makes the oak。〃
Covers of metallic gauze resting on earthenware saucers full of sand; a few
carboys and flower…pots or sweetmeat jars closed with a square of glass;
these serve as observation or experimental cages in which the progress and
the actions of 〃these tiny living machines〃 can be examined。
Fabre has revealed himself as a psychologist without rival; of a consummate
skill in the difficult and delicate art of experimentation; the art of
making the insect speak; of putting questions to it; of forcing it to
betray its secrets; for experiment is 〃the only method which can throw any
light upon the nature of instincts。〃
His resources being slender and his mind inventive; he has ingeniously
supplemented the poverty of his equipment; and has discovered less costly
and less complex means of conducting his experiments; knowing the secret of
extracting the sublimest truth from clumsy combinations of 〃trivial;
peasant…made articles。〃
He has succeeded; in his rustic laboratory; in applying the rigorous rules
of investigation and experimentation established by the great biologists。
He has therefore been able to establish his beautiful observations in a
manner so indisputable that those who come after him and are tempted to
study the same things can but arrive at the same results; and derive
inspiration from his researches。
To note with care all the details of a phenomenon is the first essential;
so that others may afterwards refer to them and profit by them; the
difficult thing is to interpret them; to discover the circumstances; the
whys and wherefores; the consequences; and the connecting links。
But a single fact observed by chance at the wayside; and which would not
even attract the attention of another; will be instantly luminous to this
searching understanding; it will suggest questions unforeseen; and will
evoke; by anticipation; preconceived ideas and sudden flashes of intuition;
which will necessitate the test of experiment。
Why; for example; does the Philanthus; that slender wasp; which captures
the honey…bee upon the blossoms in order to feed her larvae; why; before
she carries her prey to her offspring; does she 〃outrage the dying insect;〃
by squeezing its crop in order to empty it of honey; in which she appears
to delight; and does indeed actually delight?
〃The bandit greedily takes in her mouth the extended and sugared tongue of
the dead insect; then once more she presses the neck and the thorax; and
once more applies the pressure of her abdomen to the honey…sac of the bee。
The honey oozes forth and is instantly licked up。 Thus the bee is gradually
compelled to disgorge the contents of the crop。 This atrocious meal lasts
often half an hour and longer; until the last trace of honey has
disappeared。〃
The detailed answer is obtained by experiment; which perfectly explains
this 〃odious feast;〃 the excuse for which is simply maternity。 The
Philanthus knows; instinctively; without having learned it; that honey;
which is her ordinary fare; is; by a very singular 〃inversion;〃 a mortal
poison to her larvae。 (7/31。)
As an accomplished physiologist; Fabre conducts all kinds of experiments。
Behind the wires of his cages; he provokes the moving spectacle of the
scorpion at grip with the whole entomological fauna; in order to test the
effects of its terrible venom upon various species; and thus he discovers
the strange immunity of larvae; the virus; 〃the reagent of a transcendent
chemistry; distinguishes the flesh of the larva from that of the adult; it
is harmless to the former; but mortal to the latter〃; a fresh proof that
〃metamorphosis modifies the substance of the organism to the point of
changing its most intimate properties。〃 (7/32。)
You may judge from this that he knows through and through the history of
the creatures which form the subjects of his faithful narratives。 He is
informed of the smallest events of their lives。 He possesses a calendar of
their births; he records their chronology and the succession of
generations; he has noted their methods of work; examined their diet; and
recorded their meals。 He discovers the motives which dictate their
peculiarities of choice; why the Cerceris; for instance; among all the
victims at its disposal; never selects anything but the Buprestis and the
weevils。 He is familiar too with their tactics of warfare and their methods
of conflict。
His gaze has penetrated even the most hidden dwellings; those in which the
Halictus 〃varni