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A LIBRARY OF
UNIVERSAL LITERATURE
TN OU Pei
Comprising Science, Biography, Fiction

and the Great Orations

PART ONE—SCIENCE

NOVUM ORGANUM

BY

LORD BACON

NEW YORK
PF. COLLIER AND SON
‘-MCMI-
22

PRESS OF
P, F. COLLIER & SON

—_

ALL RIGHTS RESERVED

NOVUM ORGANUM

OR

TRUE SUGGESTIONS FOR THE INTERPRETATION
OF NATURE

PREEACE

THEY who have presumed to dogmatize on nature, as
on some well investigated subject, either from self-conceit
or arrogance, and in the professorial style, have inflicted
the greatest injury on philosophy and learning. For they
have tended to stifle and interrupt inquiry exactly in pro-
portion as they have prevailed in bringing others to their
opinion: and their own activity has not counterbalanced
the mischief they have occasioned by corrupting and de-
stroying that of others. They again who have entered upon
a contrary course, and asserted that nothing whatever can
be known, whether they have fallen into this opinion from
their hatred of the ancient sophists, or from the hesitation
of their minds, or from an exuberance of learning, have
certainly adduced reasons for it.which are by no means
contemptible. They have not, however, derived their
opinion from true sources, and, hurried on by their zeal
and some affectation, have certainly exceeded due modera-
tion. But the more ancient Greeks (whose writings have
perished), held a more prudent mean, between the arro-
gance of dogmatism, and the despair of scepticism; and
though too frequently intermingling complaints and indig-

(5)

6 PREFACE

nation at the difficulty of inquiry, and the obscurity of
things, and champing, as it were, the bit, have stil! per-
sisted in pressing their point, and pursuing their inter-
course with nature; thinking, as it seems, that the better
method was not to dispute upon the very point of the pos-
sibility of anything being known, but to put it to the test
of experience. Yet they themselves, by only employing
the power of the understanding, have not adopted a fixed
rule, but have laid their whole stress upon intense medita-
tion, and a continual exercise and perpetual agitation of
the mind.

Our method, though difficult in its operation, is easily
explained. It consists in determining the degrees of cer-
tainty, while we, as it were, restore the senses to their
former rank, but generally reject that operation of the
mind which follows close upon the senses, and open and
establish a new and certain course for the mind from the
first actual perceptions of the senses themselves. This, no
doubt, was the view taken by those who have assigned so
much to logic; showing clearly thereby that they sought
some support for the mind, and suspected its natural and
spontaneous mode of action. But this is now employed
too late as a remedy, when all is clearly lost, and after the
mind, by the daily habit and intercourse of life, has come
prepossessed with corrupted doctrines, and filled with the
vainest idols. The art of logic therefore being (as we have
mentioned), too late a precaution,’ and in no way remedy-

1 Because it was idle to draw a logical conclusion from false principles, error
being propagated as much by false premises, which logic does not pretend to
examine, as by illegitimate inference. Hence, as Bacon says further on, men
being easily led to confound legitimate inference with truth, were confirmed
in their errors by the very subtilty of their genius.—Zd.

PREFACE vf

ing the matter, has tended more to confirm errors, than to

disclose truth. Our only remaining hope and salvation is |
to begin the whole labor of the mind again; not leaving .

it to itself, but directing it perpetually from the very first,
and "attaining our end as it were by mechanical aid. If |
men, for instance, had attempted mechanical labors with
their hands alone, and without the power and aid of instru-
ments, as they have not hesitated to carry on the labors
of their understanding with the unaided efforts of their
mind, they would have been able to move and -overcome
but little, though they had exerted their utmost and united
powers. And just to pause awhile on this comparison,
and look into it as a mirror; let us ask, if any obelisk of
a remarkable size were perchance required to be moved,
for the purpose of gracing a triumph or any similar pag-
eant, and men were to attempt it with their bare hands,
would not any sober spectator avow it to be an act of the
greatest madness? And if they should increase the num-
ber of workmen, and imagine that they could thus succeed,
would he not think so still more? But if they chose to make
a selection, and to remove the weak, and only employ the
strong and vigorous, thinking by this means, at any rate,
to achieve their object, would he not say that they were
more fondly deranged? Nay, if not content with this, they
were to determine on consulting the athletic art, and were
_ to give orders for all to appear with their hands, arms, and
muscles regularly oiled and prepared, would he not exclaim
that they were taking pains to rave by method and design?
Yet men are hurried on with the same senseless energy and
useless combination in intellectual matters, as long as they
expect great results either from the number and agreement,
or the excellence and acuteness of their wits; or even

{

8 PREFACE

strengthen their minds with logic, which may be con:
sidered as an athletic preparation, but yet do not desist
(if we rightly consider the matter) from applying their own
understandings merely with all this zeal and effort. While
nothing is more clear, than that in every great work exe-
cuted by the hand of man without machines or implements,

it is impossible for the strength of individuals to be in-

creased, or for that of the multitude to combine.

Having premised so much, we lay down two points on
which we would admonish mankind, lest they should fail
to see or to observe them. ‘The first of these is, that it is
our good fortune (as we consider it), for the sake of extin-
guishing and removing contradiction and irritation of mind,
to leave the honor and reverence due to the ancients un-
touched and undiminished, so that we can perform our
intended work, and yet enjoy the benefit of our respectful
moderation. For if we should profess to offer something
better than the ancients, and yet should pursue the same
course as they have done, we could never, by any artifice,
contrive to avoid the imputation of having engaged in a
contest or rivalry as to our respective wits, excellences,
or talents; which, though neither inadmissible nor new (for
why should we not blame and point out anything that is
imperfectly discovered or laid down by them, of our own
right, a right common to all?), yet however just and allow-
able, would perhaps be scarcely an equal match, on account
of the disproportion of our strength. But since our present
plan leads up to open an entirely different course to the
understanding, and one unattempted and unknown to them,
the case is altered. There is an end to party zeal, and we
only take upon ourselves the character of a guide, which
requires a moderate share of authority and good fortune,

Ne ae) ae ee

is ne a

PREFACE 9

rather than talents.and excellence. The first admonition
relates to persons, the next to things.

We make no attempt to disturb the system of philosophy
that now prevails, or any other which may or will exist,
either more correct or more complete. For we deny not
that the received system of philosophy, and others of a
similar nature, encourage discussion, embellish harangues,
are employed, and are of service in the duties of the pro-
fessor, and the affairs of civil life. Nay, we openly express
and declare that the philosophy we offer will not be very
useful in such respects. It is not obvious, nor to be under-
stood in a cursory view, nor does it flatter the mind in its
preconceived notions, nor will it descend to the level of the
generality of mankind unless by its advantages and effects.

Let there exist then (and may it be of advantage to

both), two sources, and two distributions of learning, and

in like manner two tribes, and as it were kindred families
of contemplators or philosophers, without any hostility or
alienation between them; but rather allied and united by

mutual assistance. Let there be in short one method
of cultivating the sciences, and another of discovering |

them. And as for those who prefer and more readily re-

ceive the former, on account of their haste or from motives.

arising from their ordinary life, or because they are unable
from weakness of mind to comprehend and embrace the
other (which must necessarily be the case with by far the
greater number), let us wish that they may prosper as they
desire in their undertaking, and attain what they pursue.
But if any individual desire, and is anxious not merely to

adhere to, and make use of present discoveries, but to pene- \
trate still further, and not to overcome his adversaries in

disputes, but nature by labor, not in short to give elegant

Occ PREFACE

and specious opinions, but to know to a certainty and dem-

| onstration, let him, as a true son of science (if such be his
_ wish), join with us; that when he has left the antechambers

of nature trodden by the multitude, an entrance may at last
be discovered to her inner apartments. And in order to be
better understood, and to render our meaning more familiar
by assigning determinate names, we have accustomed our-
selves to call the one method the anticipation of the mind,
and the other the interpretation of nature.

We have still one request left. We have at least re-
flected and taken pains in order to render our propositions
not only true, but of easy and familiar access to men’s
minds, however wonderfully prepossessed and _ limited.
Yet it is but just that we should obtain this favor from
mankind (especially in so great a restoration of learning
and the sciences), that whosoever may be desirous of form-
ing any determination upon an opinion of this our work
either from his own perceptions, or the crowd of authori-
ties, or the forms of demonstrations, he will not expect to
be able to do so in a cursory manner, and while attending
to other matters; but in order to have a thorough knowledge
of the subject, will himself by degrees attempt the course
which we describe and maintain; will be accustomed to the
subtilty of things which is manifested by experience; and
will correct the depraved and deeply rooted habits of his
mind by a seasonable, and, as it were, just hesitation:
and then, finally (if he will), use his judgment when he
has begun to be master of himself.

APHORISMS—BOOK I

ON THE INTERPRETATION OF NATURE AND THE
EMPIRE OF MAN

I. MAN, as the minister and interpreter of nature, does
and understands as much as his observations on the orde
of nature, either with regard to things or the mind, permit
him, and neither knows nor is capable of more.

Ii. The unassisted hand and the understanding left to
itself possess but little power. Effects are produced by the
means of instruments and helps, which the understanding
requires no less than the hand; and as instruments either
promote or regulate the motion of the hand, so those that
are applied to the mind prompt or protect the understanding.

Ill. Knowledge and human power are synonymous, since

the ignorance of the cause frustrates the effect; ; for nature is
only subdued by submission, and that which in contem-
plative philosophy corresponds with the cause in practical
science becomes the rule.

IV. Man while operating can only apply or withdraw
natural bodies; nature internally performs the rest.

V. Those who become practically versed in nature are,
the mechanic, the mathematician, the physician, the al-
chemist, and the magician,’ but all (as matters now stand)
with faint efforts and meagre success.

1 Bacon uses the term in its ancient sense, and means one who, knowing
the occult properties of bodies, is able to startle the ignorant by drawing out of
them wonderful and unforeseen changes. See the 85th aphorism of this book,
and the 5th cap. book iii. of the De Augmentis Scientiarum, where he speaks
more clearly—d,

(11)

12 NOVUM ORGANUM

VI. It would be madness and inconsistency to suppose
that things which have never yet been performed can be
performed without employing some hitherto untried means.

VII. The creations of the mind and hand appear very
numerous, if we judge by books and manufactures; but all
that variety consists of an excessive refinement, and of de-
ductions from a few well known matters—not of a number
of axioms.”

VIII. Even the effects already discovered are due to

chance and experiment rather than to the sciences; for our
present sciences are nothing more than peculiar arrange-
/ ments of matters already discdvered, and not methods for
| discovery or plans for new operations.
IX. The sole cause and root of almost every defect in
‘ the sciences is this, that while we falsely admire and extol
the powers of the human mind, we do not search for its
real helps.

X. The subtilty of nature is far beyond that of sense
or of the understanding: so that the specious meditations, -
speculations, and theories of mankind are but a kind of
insanity, only there is no one to stand by and observe it.

XI. As the present sciences are useless for the discovery
of effects, so the present system of logic’ is useless for the
discovery of the sciences. :

2 By this term axiomata, Bacon here speaks of general principles, or univer-
sal laws. In the 19th aphorism he employs the term to express any proposition
collected from facts by induction, and thus fitted to become the starting-point
of deductive reasoning. In the last and more rigorous sense of the term, Bacon
held they arose from experience. See Whewell’s ‘‘Philosophy of the Inductive
Sciences,’ vol. i. p. 74; and Mill’s ‘‘Logic,’’ vol. i. p. 311; and the June
“‘Quarterly,’’ 1841, for the modern phase of the discussion.—£d.

3 Bacon here attributes to the Aristotelian logic the erroneous consequences
which sprung out of its abuse. The demonstrative forms it exhibits, whether
verbally or mathematically expressed, are necessary to the support, verification,

NOVUM ORGANUM 13

XII. The present system of logic rather assists in con-
firming and rendering inveterate the errors founded on
vulgar notions than in searching after truth, and is there-
fore more hurtful than useful.

XIII. The syllogism is not applied to the principles of
the sciences, and is of no avail in intermediate axioms,‘ as

and extension of induction, and when the propositions they embrace are founded
on an accurate and close observation of facts, the conclusions to which they
lead, even in moral science, may be regarded as certain as the facts wrested out
of nature by direct experiment. In physics such forms are absolutely required
to generalize the results of experience, and to connect intermediate axioms with
laws still more general, as is sufficiently attested by the fact, that no science
since Bacon’s day has ceased to be experimental by the mere method of induc-
tion, and that all become exact only so far as they rise above experience, and
connect their isolated phenomena with general laws by the principles of deduc-
tive reasoning. So far, then, are these forms from being useless, that they are
looked on as detrimental, except when obtruded in ie place of direct experi-
ment, or employ ed as a means of deducing conclusions about nature from im-
aginary “hypotheses and abstract conceptions. This had been unfortunately the
practice of the Greeks. From the rapid development geometry received in their
hands, they imagined the same method would lead to results equally brilliant in
natural science, and snatching up some abstract principle, which they carefully
removed from the test of experiment, imagined they could reason out from it all
the laws and external appearances of the universe. The scholastics were im-
pelled along the same path, not only by precedent, but by profession. Theology
was the only science which received from them a consistent development, and
the @ priori grounds on which it rested prevented them from employing any |
other method in the pursuit of natural phenomena. Thus, forms of demonstra- *
tion, in themselves accurate, and of momentous value in their proper sphere,
became confounded with fable, and led men into the idea they were exploring
truth when they were only accurately deducing error from error. One principle
ever so slightly deflected, like a false quantity in an equation, could be sufficient
to infect the whole series of conclusions of which it was the base; and though
the philosopher might subsequently deduce a thousand consecutive inferences
with the utmost accuracy or precision, he would only succeed in drawing out
very methodically nine hundred and ninety-nine errors. —£d.

4 It would appear from this and the two preceding aphorisms, that Bacon
fell into the error of denying the utility of the syllogism in the very part of
inductive science where it is essentially required. Logic, like mathematics, is

14 NOVUM ORGANUM “

being very unequal to the subtilty of nature. It forces
assent, therefore, and not things.

XIV. The syllogism consists of propositions; proposi-
tions of words; words are the signs of notions. If, there-
fore, the notions (which form the basis of the whole) be
confused and carelessly abstracted from things, there is no
solidity in the superstructure. Our only hope, then, is in
genuine induction. -

XV. We have no sound notions either in logic or phys-
ics; substance, quality, action, passion, and existence are
not clear notions; much less weight, levity, density, tenu-
ity, moisture, dryness, generation, corruption, attraction,

purely a formal process, and must, as the scaffolding to the building, be em-
ployed to arrange facts in the structure of a science, and not to form any por-
tion of its groundwork, or to supply the materials of which the system is to
be composed. The word syllogism, like most other pyschological terms, has
no fixed or original signification, but is sometimes employed, as it was by the
Greeks, to denote general reasoning, and at others to point out the formal
method of deducing a particular inference from two or more general proposi-
tions. Bacon does not confine the term within the boundaries of express defi-
nition, but leaves us to infer that he took it in the latter sense, from his custom
of associating the term with the wranglings of the schools. The scholastics, it
is true, abused the deductive syllogism, by employing it in its naked, skeleton-
like form, and confounding it with the whole breadth of logical theory; but
their errors are not to be visited on Aristotle, who never dreamed of playing
with formal syllogisms, and, least of all, mistook the descending for the ascend-
ing series of inference. In our mind we are of accord with the Stagyrite, who
propounds, as far as we can interpret him, two modes of investigating truth—
the one by which we ascend from particular and singular facts to general laws
and axioms, and the other by which we descend from universal propositions to
the individual cases which they virtually include. Logic, therefore, must equally
_ vindicate the formal purity of the synthetic illation by which it ascends to the
whole, as the analytic process by which it descends to the parts. The deductive
and inductive syllogism are of equal significance in building up any body of
truth, and whoever restricts logic to either process, mistakes one-half of its
province for the whole; and if he acts upon his error, will paralyze his meth-
ods, and strike the noblest part of science with sterility. —Zd.

NOVUM ORGANUM 15

repulsion, element, matter, form, and the like. They are
all fantastical and ill-defined.

XVI. The notions of less abstract natures, as man, dog,
dove, and the immediate perceptions of sense, as heat, cold,
white, black, do not deceive us materially, yet even these
are sometimes confused by the mutability of matter and
the intermixture of things. All the rest which men have /
hitherto employed are errors, and improperly abstracted |
and deduced from things.

XVII. There is the same degree of licentiousness and
error in forming axioms as in abstracting notions, and that
in the first principles, which depend on common induction;
still more is this the case in axioms and inferior proposi-
tions derived from syllogisms.

XVIII. The present discoverjes in science are such as
lie immediately beneath the surface of common notions. It
is necessary, however, to penetrate the more secret and re-
mote parts of nature, in order to abstract both notions and
axioms from things by a more certain and guarded method.

XIX. There are and can exist but two ways of investi-
gating and discovering truth. The one hurries on rapidly |
from the senses and particulars to the most general axioms,
and from them, as principles and their supposed indisput-
able truth, derives and discovers the intermediate axioms.
This is the way nowinuse. The other constructs its axioms |

from the senses and particulars, by ascending continually |
and gradually, till it finally arrives at the most generat
axioms, which is the true but unattempted way.

XX. The understanding when left to itself proceeds by
the same way as that which it would have adopted under
the guidance of logic, namely, the first; for the mind is fond
of starting off to generalities, that it may avoid labor, and

16 NOVUM ORGANUM

after dwelling a little on a subject is fatigued by experiment.
But those evils are augmented by logic, for the sake of the
ostentation of dispute.

XXJ. The understanding, when left to itself in a man of
a steady, patient, and reflecting disposition (especially when
unimpeded by received doctrines), makes some attempt in
the right way, but with little effect, since the understanding,
undirected and unassisted, is unequal to and unfit for the
task of vanquishing the obscurity of things.

XXII. Hach of these two ways begins from the senses
and particulars, and ends in the greatest generalities. But
they are immeasurably different; for the one merely touches
cursorily the limits of experiment and particulars, while the
other runs duly and regularly through them—the one from
the very outset lays down some abstract and useless general-
ities, the other gradually rises to those principles which are
really the most common in nature.°®

XXIII. There is no small difference between the idols
of the human mind and the ideas of the Divine mind—that
is to say, between certain idle dogmas and the real stamp
and impression of created objects, as they are found in
nature. .

XXIV. Axioms determined upon in argument can never
assist in the discovery of new effects; for the subtilty of
nature is vastly superior to that of argument. But axioms
properly and regularly abstracted from particulars easily

5 The Latin is, ad ea que revera sunt nature notiora. This expression,
nature notiora, nature notior, is so frequently employed by Bacon, that we
may conclude it to point to some distinguishing feature in the Baconian physics.
It properly refers to the most evident principles and laws of nature, and springs
from that system which regards the material universe as endowed with intelli-
gence, and acting according to rules either fashioned or clearly understood by
itself. — Ld.

a i lcs

NOVUM ORGANUM 7

point out and define new particulars, and therefore impart
activity to the sciences.

XXV. The axioms now in use are derived from a scanty
handful, as it were, of experience, and a few particulars of
frequent ‘occurrence, whence they are of much the same
dimensions or extent as their origin. And if any neglected
or unknown instance occurs, the axiom is saved by some
frivolous distinction, when it would be more consistent with
truth to amend it.

XXVI. We are wont, for the sake of distinction, to call
that human reasoning which we apply to nature the antici-
pation of nature (as being rash and premature), and that
which is properly deduced from things the interpretation of
nature. 7

XXVII. Anticipations are sufficiently powerful in pro-
ducing unanimity, for if men were all to become even uni-
formly mad, they might agree tolerably well with each
other. |

XXVIII. Anticipations again, will be assented to much
more readily than interpretations, because being deduced
from a few instances, and these principally of familiar oe-
currence, they immediately hit the understanding and sat-
isfy the imagination; while, on the contrary, interpretations,
being deduced from various subjects, and these widely dis-
persed, cannot suddenly strike the understanding, so that in
common estimation they must appear difficult and discord-
ant, and almost like the mysteries of faith.

X XIX. In sciences founded on opinions and dogmas, it
is right to make use of anticipations and logic if you wish to
force assent rather than things.

XXX. If all the capacities of all ages should unite and
combine and transmit their labors, no great progress will be

——,

18 NOVUM ORGANUM

made in4dearning by anticipations, because the radical errors,
and those which occur in the first process of the mind, are
not cured by the excellence of subsequent means and reme-
dies.
XXXI. It is in vain to expect any great progress in the
sciences by the superinducing or ingrafting new matters
upon old. An( (instauration must be made from the very

“foundations, two do nat wiell to revolve forever an wir

cle, making only some slight and contemptible progress.

XXXIT. The ancient authors and all others are left in
undisputed possession of their honors; for we enter into no
comparison of capacity or talent, but of method, and assume
the part of a guide rather than of a critic.

XXXITI. To speak plainly, no correct judgment can be
formed either of our method or its discoveries by those an-
ticipations which are now in common use; for it is not to be
required of us to submit ourselves to the judgment of the
very method we ourselves arraign.

XXXIV. Nor is it an easy matter to deliver and explain
our sentiments; for those things which are in themselves
new can yet be only understood from some analogy to what
is old.

XXXV. Alexander Borgia’ said of the expedition of the
French into Italy that they came with chalk in their hands
to mark up their lodgings, and not with weapons to force
their passage. Hven so do we wish our philosophy to make
its way quietly into those minds that are fit for it, and of
good capacity; for we have no need of contention where we

6 This Borgia was Alexander VI., and the expedition alluded to that in
which Charles VIII. overran the Italian peninsula in five months. Bacon uses
the same illustration in concluding his survey of natural philosophy, in the sec-
ond book of the ‘‘De Augmentis.’’—Zd.

r

NOVUM ORGANUM i9

differ in first principles, and in our very notions, and even
in our forms of demonstration.
XXXVI. We have but one simple method of delivering
our sentiments, namely, we must bring men to particulars
and their regular series and order, and they must for a while
renounce their notions, and begin to form an acquaintance
with things.
XXXVII. Our method and that of the sceptics’ agree
in some respects at first setting out, but differ most widely,
and are completely opposed to each other in their conclu-
sion; for they roundly assert that nothing can be known;
we, that but a small part of nature can be known, by the
present method; their next step, however, is to destroy the
authority of the senses and understanding, while we invent
and supply them with assistance. ot,
XXXVIIT. The idols and false notions which have al-.. 4...
ready preoccupied the human understanding, and are deeply ~ ae sey bs
rooted in it, not only so beset men’s minds that they become _» i"
difficult of access, but even when access is obtained will again he nein

meet and trouble us in the instauration of the sciences, un+ Ler oe “at
less mankind when forewarned guard themselves with all / 1b
possible care against them. era. nite ye

XXXIX. Four species of idols beset the human nind,® os

7 Ratio eorum quit acatalepsiam tenuerunt. Bacon alludes to the menho
of the later academy, who held the éxarédAnya, or the impossibility of compre- , ,° ~
hending anything. His translator, however, makes him refer to the sceptics,
who neither dogmatized about the known or the unknown, but simply held,
that as all knowledge was relative, pos mévta 74, man could never arrive at
absolute truth, and therefore could not with certainty affirm or deny any-
thing.—Ed.

8 It is argued by Hallam, with some appearance of truth, that idols is not
the correct translation of «éwAe, from which the original idola is manifestly de-
rived; but that Bacon used it in the literal sense attached to it by the Greeks,
as a species of illusion, or false appearance, and not as a species of divinity be-

20 NOVUM ORGANUM

to which (for distinction’s sake) we have assigned names,
calling the first Idols of the Tribe, the second Idols of the

Den, the third Idols of the Market, the fourth Idols of Eo |

gst SN IPy exter: ey | Fen
, tt

Theatre. ) i Ae : /
we | lar Weta Att VR oe) yok -t..2
Xt. The: fecal of notions and axioms on the foun- et

akt

dation of true induction is the only fitting remedy by which wt.

we can ward off and expel these idols. It is, however, “of 2
great service to point them out; for the doctrine of idols| %

By

bears the same relation to the interpretation of nature ag 7
4s tiie
that of the confutation of sophisms does to common

logic.® is aie:
XLI. The idylsof the biboorp inhsesifagtumen nature
and the very trike vate Y of mat; ; for man’s sense is falsely

asserted to be the standard of \t ings; on the contrary, all
the perceptions both of the sens

s and the mind bear refer-
ence to man and not to the universe, yand the human mind

resembles those uneven mirrors / which impart their own
+ ip 5 ‘ f y, “

a omer * =~ ve

f ts ed ep PO | “amy Sa ? ar aa ~ G.. ee ) 2 dd A 4 és ye <Z brvreck 7

fore which the mind bows down. If Hallam be right, Bacon is saved from the
odium of an analogy which his foreign commentators are not far wrong in de-
nouncing as barbarous; but this service is rendered at the expense of the men
who have attached an opposite meaning to the word, among whom are Brown,
Playfair and Dugald Stewart.—£d.

9 We cannot see how these idols have less to do with sophistical paralogisms
than with natural philosophy. The process of scientific induction involves only
+he first elements of reasoning, and presents such a clear and tangible surface,
as to wiic:w no lurking-place for prejudice; while questions of politics and
morals, to which the deductive method, or common logic, as Bacon calls it, is
peculiarly applicable, are ever liable to be swayed or perverted by the preju-
dices he enumerates. After mathematics, physical science is the least amenable
to the illusions of feeling; each portion having been already tested by experi-
ment and observation, is fitted into its place in the system, with all the rigor
of the geometrical method; affection or prejudice cannot, as in matters of taste,
history or religion, select fragmentary pieces, and form a system of their own.

~The whole must be admitted, or the structure of authoritative reason razed to
the ground. It is needless to say that the idols enumerated present only
another interpretation of the substance of logical fallacies. —£d.

Ark, tad’ 2

PP C4 21

a Sa ‘

NOVUM ORGANUM 21

properties to different objects, from which rays are emitted
~ and distort and disfigure them."
-. XLII. The idols of the den are those of each individual ;*
for everybody (in addition to the errors common to the race \
of man) has his own individual den or cavern, which inter- ly
cepts and corrupts the light of nature, either from his own |
peculiar and singular disposition, or from his education and
intercourse with others, or from his reading, and the author- ee
ity acquired by those whom he reverences and admires, or ) :
|

from the different impressions produced on the mind, as it
happens to be preoccupied and predisposed, or equable and
tranquil, and the like; so that the spirit of man (according
to its several dispositions), is variable, confused, and as it
were actuated by chance; and Heraclitus said well that men _
(\ search for knowledge in lesser worlds, and not in the greater
or common world.
XLII. There are also idols formed by the reciprocal in-
_ tercourse and society of man with man, which we call idols
of the market, from the commerce and association of men
with each other; for men converse by means of language,
but words are formed at the will of the generality, and there
arises from a bad and unapt formation of words a wonderful
obstruction to the mind. Nor can the definitions and ex-
planations with which learned men are wont to guard and
protect themselves in some instances afford a complete rem-
edy—words still manifestly force the understanding, throw
everything into confusion, and lead mankind into vain and
innumerable controversies and fallacies.
XLIV. Lastly, there are idols which have crept into

10 The propensity to this illusion may’ be viewed in the spirit of system,
or hasty generalization, which is still one of the chief obstacles in the path
of modern science.—£d.

22 NOVUM ORGANUM

men’s minds from the various dogmas of peculiar systems
of philosophy, and also from the perverted rules of demon-
stration, and these we denominate idols of the theatre: for
we regard all the systems of philosophy hitherto received
or imagined, as so many plays brought out and performed,
creating fictitious and theatrical worlds. Nor do we speak
only of the present systems, or of the philosophy and sects
of the ancients, since numerous other plays of a similar
nature can be still composed and made to agree with each
other, the causes of the most opposite errors being generally
the same. Nor, again, do we allude merely to general sys-
tems, but also to many elements and axioms of sciences
which have become inveterate by tradition, implicit cre-
dence, and neglect. We must, however, discuss each spe-
cies of idols more fully and distinctly in order to guard the
human understanding against them.

XLV. The human understanding, from its peculiar na-
ture, easily supposes a greater degree of order and equality
in things than it really finds; and although many things in
nature be suz generis and most irregular, will yet invent
parallels and conjugates and relatives, where no such thing
is. Hence the fiction, that all celestial bodies move in per-
fect circles, thus rejecting entirely spiral and serpentine
lines (except as explanatory terms)."* Hence also the ele-

11 Though Kepler had, when Bacon wrote this, already demonstrated his
three great laws concerning the elliptical path of the planets, neither Bacon
nor Descartes seems to have known or assented to his discoveries. Our author
deemed the startling astronomical announcements of his time to be mere theo-
retic solutions of the phenomena of the heavens, not so perfect as those ad-
vanced by antiquity, but still deserving a praise for the ingenuity displayed in
their contrivance. Bacon believed a hundred such systems might exist, and
though true in their explanation of phenomena, yet might all more or less
differ, according to the preconceived notions which their framers brought to
the survey of the heavens. He even thought he might put in his claim to the

_NOVUM ORGANUM 23

ment of fire is introduced with its peculiar orbit,’ to keep
square with those other three which are objects of our
senses. The relative rarity of the elements (as they are
called) is arbitrarily made to vary in tenfold progression,
with many other dreams of the like nature.’* Nor is this
folly confined to theories, but it is to be met with even in
simple notions.
XLVI. The human understanding, when any proposi-
tion has been once laid down (either from general admission
and belief, or from the pleasure it affords), forces everything
else to add fresh support and confirmation; and although
most cogent and abundant instances may exist to the con-
trary, yet either does not observe or despises them, or gets
rid of and rejects them by some distinction, with violent and
injurious prejudice, rather than sacrifice the authority of its
first conclusions. It was well answered by him™ who was

notice of posterity for his astronomical ingenuity, and, as Ptolemy had labored
by means of epicycles and eccentrics, and Kepler with ellipses, to explain the
laws of planetary motion, Bacon thought the mystery would unfold itself quite
as philosophically through spiral labyrinths and serpentine lines. What the
details of his system were, we are left to conjecture, and that from a very
meagre but naive account of one of his inventions which he has left in his
Miscellany MSS.—£d.

12 Hine elementum ignis cum orbe suo introductum est. Bacon saw in fire
the mere result of a certain combination of action, and was consequently led
to deny its elementary character. The anciént physicists attributed an orbit to
each of the four elements, into which they resolved the universe, and supposed
their spheres to involve each other. The orbit of the earth was in the centre,
that of fire at the circumference. For Bacon’s inquisition into the nature
of heat, and its complete failure, see the commencement of the second book
of the Novum Organum.—d.

8 Robert Fludd is the theorist alluded to, who had supposed the gravity
of the earth to be ten times heavier than water, that of water ten times heavier
than air, and that of air ten times heavier than fire. —Zd.

4 Diagoras. The same allusion occurs in the second part of the Advance-
ment of Learning, where Bacon treats of the idols of the mind.

24 NOVUM ORGANUM

shown ina temple the votive tablets suspended by such as
had escaped the peril of shipwreck, and was pressed as to
whether he would then recognize the power of the gods, by
an inquiry, But where are the portraits of those who have
perished in spite of their vows? All superstition is much
the same, whether it be that of astrology, dreams, omens,
retributive judginent, or the like, in all of which the deluded
believers observe events which are fulfilled, but neglect and
pass over their failure, though it be much more common.
But this evil insinuates itself still more craftily in philoso-
phy and the sciences, in which a settled maxim vitiates and
governs every other circumstance, though the latter be much
more worthy of confidence. Besides, even in the absence
of that eagerness and want of thought (which we have men-
tioned), it is the peculiar and perpetual error of the human
understanding to be more moved and excited by affirmatives
than negatives, whereas it ought duly and regularly to be
impartial; nay, in establishing any true axiom the negative
instance is the most powerful.

XLVII. The human understanding is most excited by
that which strikes and enters the mind at once and sud-
denly, and by which the imagination is immediately filled
and inflated. It then begins almost imperceptibly to con-
ceive and suppose that everything is similar to the few.
objects which have taken possession of the mind, while it
is very slow and unfit for the transition to the remote and
heterogeneous instances by which axioms are tried as by
fire, unless the office be imposed upon it by severe regula-
tions and a powerful authority.

XLVIIl. The human understanding is active and cannot
halt or rest, but even, though without effect, still presses
forward. Thus we cannot conceive of any end or external

NOVUM ORGANUM 25

boundary of the world, and it seems necessarily to occur
to us that there must be something beyond. Nor can we
imagine how eternity has flowed on down to the present
day, since the usually received distinction of an infinity,
a parte ante and a parte post,’* cannot hold good; for it
would thence follow that one infinity is greater than an-
other, and also that infinity is wasting away and tending
to anend. There is the same difficulty in considering the
infinite divisibility of lines, arising from the weakness of
our minds, which weakness interferes to still greater dis-
advantage with the discovery of causes; for although the
greatest generalities in nature must be positive, just as
they are found, and in fact not causable, yet the human
understanding, incapable of resting, seeks for something
more intelligible. Thus, however, while aiming at further
progress, it falls back to what is actually less advanced,
namely, final causes; for they are clearly more allied to
man’s own nature, than the system of the universe, and
from this source they have wonderfully corrupted philoso-
phy. But he would be an unskilful and shallow philoso-
pher who should seek for causes in the greatest generalities,

15 A scholastic term, to signify the two eternities of past and future dura-
tion, that stretch out on both sides of the narrow isthmus (time) occupied by
man. It must be remembered that Bacon lived before the doctrine of limits
gave rise to the higher calculus, and therefore could have no conception of dif-
ferent denominations of infinities: on the other hand he would have thought
the man insane who should have talked to him about lines infinitely great, in-
closing angles infinitely little; that a right line, which is a right line so long as
it is finite, by changing infinitely little its direction, becomes an infinite curve,
and that a curve may become infinitely less than another curve; that there are
infinite squares and infinite cubes, and infinites of infinites, all greater than one
another, and the last but one of which is nothing in comparison with the last.
Yet half a century sufficed from Bacon’s time, to make this nomenclature,
which would have appeared to him the excess of frenzy, not only reasonable
but necessary, to grasp the higher demonstrations of physical science.—Ed.

26 NOVUM ORGANUM

and not be anxious to discover them in subordinate
objects.

XLIX. The human understanding resembles not a dry
light, but admits a tincture of the will’® and passions, which
generate their own system accordingly; for man always be-

‘ieves more readily that which he prefers. He, therefore,

rejects difficulties for want of patience in investigation;

\ sobriety, because it limits his hope; the depths of nature,

from superstition; the light of experiment, from arrogance

_ and pride, lest his mind should appear to be occupied with
~ common and varying objects; paradoxes, from a fear of the

opinion of the vulgar; in short, his feelings imbue and
corrupt his understanding in innumerable and sometimes

\ imperceptible ways.

L. But by far the greatest impediment and aberration
of the human understanding proceeds from the dulness,
incompetence, and errors of the senses; since whatever
strikes the senses preponderates over everything, however
superior, which does not immediately strike them. Hence
contemplation mostly ceases with sight, and a very scanty,
or perhaps no regard is paid to invisible objects. The entire
operation, therefore, of spirits inclosed in tangible bodies”
is concealed, and escapes us. All that more delicate change
of formation in the parts of coarser substances (vulgarly

16 Spinoza, in his letter to Oldenberg (Op. Posth. p. 398), considers this
aphorism based on a wrong conception of the origin of error, and, believing 1
to be fundamental, was led to reject Bacon’s method altogether. Spinoza re-
fused to acknowledge in man any such thing as a will, and resolved all his
volitions into particular acts, which he considered to be as fatally determined
by a chain of physical causes as any effects in nature.—£d.

11 Operatio spiritwum in corporibus tangibilibus. Bacon distinguished with
the schools the gross and tangible parts of bodies, from such as were volatile
and intangible. These, in conformity with the scholastic language, he terms
spirits, and frequently returns to their operations in the 2d book.—£d.

NOVUM ORGANUM 27

called alteration, but in fact a change of position in the
smallest particles) is equally unknown; and yet, unless the
two matters we have mentioned be explored and brought
to light, no great effect can be produced in nature. Again,
the very nature of common air, and all bodies of less den-
sity (of which there are many) is almost unknown; for the
senses are weak and erring, nor can instruments be of great
use in extending their sphere or acuteness—all the better
interpretations of nature are worked out by instances, and
fit and apt experiments, where the senses only judge of the
experiment, the experiment of nature and the thing itself.
LI. The human understanding is, by its own nature,
prone to abstraction, and supposes that which is fluctuating
to be fixed. But it is better to dissect than abstract nature:
such was the method employed by the school of Democ-
ritus,*° which made greater progress in penetrating nature
than the rest. It is best to consider matter, its conforma-
tion, and the changes of that conformation, its own action,”

and the law of this action or motion; for forms are a mere
fiction of the human mind, unless you will eall the laws of
action by that name.”

18 Democritus, of Abdera, a disciple of Leucippus, born B.C. 470, died 360;
all his works are destroyed. He is said to be the author of the doctrine of
atoms: he denied the immortality of the soul, and first taught that the milky
way was occasioned by a confused light from a multitude of stars. He may
be considered as the parent of experimental philosophy, in the prosecution of
which he was so ardent as to declare that he would prefer the discovery of one
of the causes of natural phenomena, to the possession of the diadem of Persia.
Democritus imposed on the blind credulity of his contemporaries, and, like
Roger Bacon, astonished them by his inventions,—<Zd.

? The Latin is actus purus, another scholastic expression to denote the
action of the substance, which composes the essence of the body apart from its
accidental qualities. For an exposition of the various kinds of motions he con-
templates, the reader may refer to the 48th aphorism of the 2d book.+Ed.

*» The scholastics after Aristotle distinguished in a subject three modes of

SciencE— Vol, 22 —2

w/t we
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Pale vs ba
UN {9 Ma
28 pW NOVUM ORGANUM
£ Y ‘ &
ain yw

AT TT. Such are the idols of the tribe, which arise either

0% trom the uniformity of the constitution of man’s spirit, or

its prejudices, or its limited faculties or restless agitation,

‘or from the interference of the passions, or the incompetence
of the senses, or the mode of their impressions.

LITI. The idols of the den derive their origin fiom the
peculiar nature of each individual’s mind and body, and
also from education, habit, and accident; and although they
be various and manifold, yet we will treat of some that re-
quire the greatest caution, and exert the greatest power in
polluting the understanding.

LIV. Some men become attached to particular sciences
and contemplations, either from supposing themselves the
authors and inventors of them, or from having bestowed
the greatest pains upon such subjects, and thus become
most habituated to them.” If men of this description apply
themselves to philosophy and contemplations of a universal

beings: viz., the power or faculty, the act, and the habitude, or in other words
that which is able to exist, what exists actually, and what continues to exist.
Bacon means that is necessary to fix our attention not on that which can
or ought to be, but on that which actually is; not on the right, but on the
fact.—Ed.

*1 The inference to be drawn from this is to suspect that kind of evidence
which is most consonant to our inclinations, and not to admit any notion as real
except we can base it firmly upon that kind of demonstration which is peculiar
to the subject, not to our impression. Sometimes the mode of proof may be
consonant to our inclinations, and to the subject at the same time, as in the
case of Pythagoras, when he applied his beloved numbers to the solution of
astronomical phenomena; or in that of Descartes, when he reasoned geomet-
rically concerning the nature of the soul. Such examples cannot be censured
with justice, inasmuch as the methods pursued were adapted to the end of the
inquiry. The remark in the text can only apply to those philosophers who at-
tempt to build up a moral or theological system by the instruments of induction
alone, or who rush, with the geometrical axiom, and the @ priort syllogism, to
the investigation of nature. The means in such cases are totally inadequate
to the object in view.—Hd.

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7-Ny YF] NOVUM ORGANUM 29
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ns nature, they wrest-and_ corrupt-them by their preconceived

=, eae of which Aristotle affords us a single instance, who
~ made. his natural philosophy completely subservient to his
eo and thus rendered it little more than useless and dis-
putatious. The chemists, again, have formed a fanciful
philosophy with the most confined views, from a few ex-
-£ periments of the furnace. Gilbert,” too, having employed

\’s himself most assiduously in the consideration of the magnet,

9 LD ont

7% Z vin rox

tT. 3 2 immediately established a system of philosophy to coincide
3 ‘ with his favorite pursuit. |
. LV. The greatest and, perhaps, radical distinction be-
- tween different men’s dispositions for philosophy and the
of »sciences is this, that some are more vigorous and active in
. observing the differences of things, others in observing their
34 * resemblances; for a steady and acute disposition can fix its
: Sshoughts, and dwell upon and adhere to a point, through
. ‘all the refinements of differences, but those that are sub-
clime and discursive recognize and compare even the most
“delicate and general resemblances; each of them readily
falls into excess, by catching either at nice distinctions or
shadows of resemblance.
LVI. Some dispositions evince an unbounded admira-
tion of antiquity, others eagerly embrace novelty, and but

few can preserve the just medium, so as neither to tear up

* Gilbert lived toward the close of a sixteenth century, and was court
physician ‘to both Elizabeth and James. In his work alluded to in the text he
continually asserts the advantages of the experimental over the @ priori method
in physical inquiry, and succeeded when his censor failed in giving a practical
example of the utility of his precepts. His ‘De Magnete’’ contains all the
fundamental parts of the science, and these so perfectly treated, tha we have
nothing to add to them at the present day.

Gilbert adopted the Copernican system, and even spoke of the contrary
theory as utterly absurd, grounding his argument on the vast velocities which
such a supposition requires us to ascribe to the heavenly bodies.—Ed.

30 NOVUM ORGANUM

what the ancients have correctly laid down, nor to despise
the just innovations of the moderns. But this is very preju-
dicial to the sciences and philosophy, and instead of a cor-
rect judgment we have but the factions of the ancients and
moderns. Truth is not to be sought in the good fortune
of any particular conjuncture of time, which is uncertain,
but in the light of nature and experience, which is eternal.
Such factions, therefore, are to be abjured, and the under-
standing must not allow them to hurry it on to assent.

LVII. The contemplation of nature and of bodies in
their individual form distracts and weakens the understand-
ing; but the contemplation of nature and of bodies in their
general composition and formation stupefies and relaxes it.
We have a good instance of this in the school of Leucippus
and Democritus compared with others, for they applied
themselves so much to particulars as almost to neglect the
general structure of things, while the others were so as-
tounded while gazing on the structure that they did not
penetrate the simplicity of nature. These two species of
contemplation must, therefore, be interchanged, and each
employed in its turn, in order to render the understanding
at once penetrating and capacious, and to avoid the incon-
veniences we have mentioned, and the idols that result
from them. 7

LVIII. Let such, therefore, be our precautions in con-
templation, that we may ward off and expel the idols of
the den, which mostly owe their birth either to some pre-
dominant pursuit, or, secondly, to an excess in synthesis
and analysis, or, thirdly, to a party zeal in favor of certain
ages, or, fourthly, to the extent or narrowness of the sub-
ject. In general, he who contemplates nature should sus-
pect whatever particularly takes and fixes his understand-

NOVUM ORGANUM dL

ing, and should use so much the more caution to preserve
it equable and unprejudiced.

LIX. The idols of the market are the most troublesome
of all, those namely which have entwined themselves round
the understanding from the associations of words and names.
For men imagine that their reason governs words, while, in
fact, words react upon the understanding; and this has ren-
dered philosophy and the sciences sophistical and inactive.
Words are generally formed in a popular sense, and define
things by those broad lines which are most obvious to the
vulgar mind; but when a more acute understanding or
more diligent observation is anxious to vary those lines,
and to adapt them more accurately to nature, words oppose
it.

often terminate in controversies about words and names, in™
regard to which it would be better (imitating the caution

of mathematicians) to proceed more advisedly in the first
instance, and to bring such disputes to a regular issue by
definitions. Such definitions, however, cannot remedy the
evil in natural and material objects, because they consist
themselves of words, and these words produce others;”*
so that we must necessarily have recourse to particular

instances, and their regular series and arrangement, as we

% The Latin text adds “‘without end’’; but Bacon is searcely right in sup-
posing that the descent from complex ideas and propositions to those of simple

nature, involve the analyst in a series of continuous and interminable detini-_ ~

tions. For in the gradual and analytical scale, there is a bar beyond which we
cannot go, as there is a summit bounded by the limited variations of our con-
ceptions. Logical definitions, to fulfil their conditions, or indeed to be of any
avail, must be given in simpler terms than the object which is sought to be
defined; now this, in the case of primordial notions and objects of sense, is. im-

possible; therefore we are obliged to rest satisfied with the mere names of our.

perceptions,— Ed, ‘

Hence the great and solemn disputes of learned men

a2 . NOVUM ORGANUM

shall mention when we come to the mode and scheme of
determining notions and axioms.

LX. The idols imposed upon the understanding by words
are of two kinds. They are either the names of things which
have no existence (for as some objects are from inattention
left without a name, so names are formed by fanciful imagi-
nations which are without an object), or they are the names
of actual objects, but confused, badly defined, and hastily
and irregularly abstracted from things. Fortune, the pri-
mum mobile, the planetary orbits, the element of fire, and
the like fictions, which owe their birth to futile and false
theories, are instances of the first kind. And this species
of idols is removed with greater facility, because it can be
exterminated by the constant refutation or the desuetude of
the theories themselves. The others, which are created by
vicious and unskilful abstraction, are intricate and deeply
rooted. Take some word, for instance, as moist, and let us
examine how far the different significations of this word are
consistent. It will be found that the word moist is nothing
but a confused sign of different actions admitted of no set-
tled and defined uniformity. For it means that which easily
diffuses itself over another body; that which is indetermi-
nable and cannot be brought to a consistency; that which

*4 The ancients supposed the planets to describe an exact circle round the
south. As observations increased and facts were disclosed, which were irrec-
oncilable with this supposition, the earth was removed from the centre to some
other point in the circle, and the planets were supposed to revolve in a smaller
circle (epicycle) round an imaginary point, which in its turn described a circle
of which the earth was the centre. In proportion as observation elicited fresh ~
facts, contradictory to these representations, other epicycles and eccentrics
were added, involving additional confusion. Though Kepler had swept away all
these complicated theories in the preceding century, by the demonstration of his
three laws, which established the elliptical course of the planets, Bacon re-
garded him and Copernicus in the same light as Ptolemy and Xenophanes.—<£d.

NOVUM ORGANUM 383

yields easily in every direction; that which is easily divided
and dispersed; that which is easily united and collected;
that which easily flows and is put in motion; that which
easily adheres to, and wets another body; that which is
easily reduced to a liquid state though previously solid.
When, therefore, you come to predicate or impose this
name, in one sense flame is moist, in another air is not
moist, in another fine powder is moist, in another glass is
moist; so that it is quite clear that this notion is hastily ab-
stracted from water only, and common ordinary lquors,
without any due verification of it.

There are, however, different degrees of distortion and

‘ “mistake in words. One of the least faulty classes is that of

the names of substances, particularly of the less abstract and
more defined species {those then of chalk and mud are good,
of earth bad); words signifying actions are’ more faulty, as
to generate, to corrupt, to change; but the most faulty are
those denoting qualities (except the immediate objects of
sense), as_heavy, light, rare, dense, _ Yet in all of these
there must be some notions a little better than others, in

-proportion as a greater or less number of things come be-

fore the senses. .

LEXI. The idols of the theatre are not innate, nor do
they introduce themselves secretly into the understanding,
but they are manifestly instilled and cherished by the fic-
tions of theories and depraved rules of demonstration. To
attempt, however, or undertake their confutation would not
be consistent with our declarations. For since we neither
agree in our principles nor our demonstrations, all argument
is out of the question. And it is fortunate that the ancients
are left in possession of their honors. We detract nothing
from them, seeing our whole doctrine relates only to the

ot NOVUM ORGANUM

path to be pursued. The lame (as they say) in the path
outstrip the swift who wander from it, and it is clear that
the very skill and swiftness of him who runs not in the right
direction must increase his aberration.

Our method of discovering the sciences is such as to leave
little to the acuteness and strength of wit, and indeed rather
to level wit and intellect. For as in the drawing of a straight
line, or accurate circle by the hand, much depends on its
steadiness and practice, but if a ruler or compass be em-
ployed there is little occasion for either; so it is with our
method. Although, however, we enter into no individual
confutations, yet a little must be said, first, of the sects and
general divisions of these species of theories; secondly,
something further to show that there are external signs of
their weakness; and, lastly, we must consider the causes of
so great a misfortune, and so long and general a unanimity
in error, that we may thus render the access to truth less
difficult, and that the human understanding may the more
readily be purified, and brought to dismiss its idols.

LXII. The idols of the theatre, or of theories, are numer-
ous, and may, and perhaps will, be still more so. For un-
less men’s minds had been now occupied for many ages in
religious and theological considerations, and civil govern-
ments (especially monarchies), had been averse to novelties
of that nature even in theory (so that men must apply to
them with some risk and injury to their own fortunes, and
not only without reward, but subject. to contumely and
envy), there is no doubt that many other sects of philoso-
phers and theorists would have been introduced, like those
which formerly flourished in such diversified abundance
among the Greeks. For as many imaginary theories of the
heavens can be deduced from the phenomena of the sky, so

NOVUM ORGANUM 35

it is even more easy to found many dogmas upon the phe-
nomena of philosophy—and the plot of this our theatre
resembles those of the poetical, where the plots which are
invented for the stage are more consistent, elegant, and
pleasurable than those taken from real history.

In general, men take for the groundwork of their phi-
losophy either too much from a few topics, or too little from
many; in either case their philosophy is founded on too nar-
row a basis of experiment and natural history, and decides
on too scanty grounds. For the theoretic philosopher seizes
various common circumstances by experiment, without re-
ducing them to certainty or examining and frequently con-
sidering them, and relies for the rest upon meditation and
the activity of his wit.

There are other philosophers who have diligently and
accurately attended to a few experiments, and have thence
presumed to deduce and invent systems of philosophy, form-
ing everything to conformity with them.

A third set, from their faith and religious veneration,
introduce theology and traditions; the absurdity of some
among them having proceeded so far as to seek and derive
the sciences from spirits and genii. ‘There are, therefore,
three sources of error and three species of false philosophy;
the sophistic, empiric, and superstitious.

LXIII. Aristotle affords the most eminent instance of
the first; for he corrupted natural philosophy by logic—
thus he formed the world of categories, assigned to the
human soul, the noblest of substances, a genus determined
by words of secondary operation, treated of density and rar-
ity (by which bodies occupy a greater or lesser space), by
the frigid distinctions of action and power, asserted that
there was a peculiar and proper motion in all bodies, and

36 NOVUM ORGANUM

that if they shared in any other motion, it was owing to an
external moving cause, and imposed innumerable arbitrary
distinctions upon the nature of things; being everywhere
more anxious as to definitions in teaching and the accuracy
of the wording of his propositions, than the internal truth
of things. And this is best shown by a comparison of his
philosophy with the others of greatest repute among the
Greeks. For the similar parts of Anaxagoras, the atoms
of Leucippus and Democritus, the heaven and earth of Par-
menides, the discord and concord of Empedocles,* the reso-
lution of bodies into the common nature of fire, and their
condensation according to Heraclitus, exhibit some sprink-
ling of natural philosophy, the nature of things, and experi-
ment; while Aristotle’s physics are mere logical terms, and
he remodelled the same subject in his metaphysics under a
more imposing title, and more as a realist than a nominalist.
Nor is much stress to be laid on his frequent recourse to ex-
periment in his books on animals, his problems, and other
treatises; for he had already decided, without having prop-
erly consulted experience as the basis of his decisions and
axioms, and aiter having so decided, he drags experiment
along as a captive constrained to accommodate herself to his
decisions: so that he is even more to be blamed than his
modern followers (of the scholastic school) who have de-
serted her altogether.

*% Empedocles, of Agrigentum, flourished 444 B.C. He was the disciple of
Telanges the Pythagorean, and warmly adopted the doctrine of transmigration.
He resolved the universe into the four ordinary elements, the principles of
whose composition were life and happiness, or concord and amity, but whose
decomposition brought forth death and evil, or discord and hatred. Heraclitus
held matter to be indifferent to any peculiar form, but as it became rarer or
more dense, it took the appearance of fire, air, earth and water. Fire, how-
ever, he believed to be the elementary principle out of which the others were
evolved. This was also the belief of Lucretius. See book i. 783, ete.

NOVUM ORGANUM 37

LXIV. The empiric school produces dogmas of a more
deformed and monstrous nature than the sophistic or theo-
retic school; not being founded in the light of common no-
tions (which, however poor and superstitious, 1s yet in a
manner universal, and of a general tendency), but in the
confined obscurity of a few experiments. Hence this spe-
cies of philosophy appears probable, and almost certain to
those who are daily practiced in such experiments, and have
thus corrupted their imagination, but incredible and futile
to others. We have a strong instance of this in the alche-
mists and their dogmas; it would be difficult to find another
in this age, unless perhaps in the philosophy of Gilbert.?®
We could not, however, neglect to caution others against
this school, because we already foresee and augur, that if
men be hereafter induced by our exhortations to apply seri-
ously to experiments (bidding farewell to the sophistic doc-
trines), there will then be imminent danger from empirics,
owing to the premature and forward haste of the under-
standing, and its jumping or flying to generalities and the
principles of things. We ought, therefore, already to meet
the evil.

LXV. The corruption of philosophy by the mixing of it
up with superstition and theology, is of a much wider ex-
tent, and is most injurious to it both as a whole and in parts.

For the human understanding is no less exposed to the im-*
pressions of fancy, than to those of vulgar notions. The

disputatious and sophistic school entraps the understand-
ing, while the fanciful, bombastic, and, as it were, poetical
school, rather flatters it. There is a clear example of this

*6 It is thus the Vulcanists and Neptunians have framed their opposite :
theories in geology. Phrenology is a modern instance of hasty generalizas —

tion.—£d.

“s

38 NOVUM ORGANUM

among the Greeks, especially in Pythagoras, where, how-
ever, the superstition is coarse and overcharged, but it is
more dangerous and refined in Plato and his school. This
evil is found also in some branches of other systems of phi-
losophy, where it introduces abstracted forms, final and first
causes, omitting frequently the intermediate and the like.
Against it we must use the greatest caution; for the apothe-
osis of error is the greatest evil of all, and when folly is
worshipped, it is, as it were, a plague spot upon the under-
standing. Yet some of the moderns have indulged this folly
with such consummate inconsiderateness, that they have en-
deavored to build a system of natural philosophy on the first
chapter of Genesis, the book of Job, and other parts of
Scripture; seeking thus the dead among the living.” And
this folly is the more to be prevented and restrained, be-
cause not only fantastical philosophy, but heretical religion
spring from the absurd mixture of matters divine and
human. It is therefore most wise soberly to render unto
faith the things that are faith’s.

LXVI. Having spoken of the vicious authority of the
systems founded either on vulgar notions, or on a few ex-
periments, or on superstition, we must now consider the
faulty subjects for contemplation, especially in natural phi-
losophy. The human understanding is perverted by observ-
ing the power of mechanical arts, in which bodies are very
materially changed by composition or separation, and is in-
duced to suppose that something similar takes place in the
universal nature of things. Hence the fiction of elements,

27 In Seripture everything which concerns the passing interests of the body
is called dead; the only living knowledge having regard to the eternal interest
of the soul.—£d.

NOVUM ORGANUM 39

and their co-operation in forming natural bodies.” Again,
when man reflects upon the entire liberty of nature, he meets
with particular species of things, as animals, plants, min-
erals, and is thence easily led to imagine that there exist in
nature certain primary forms which she strives to produce,
and that all variation from them arises from some impedi-
ment or error which she is exposed to in completing her
work, or from the collision or metamorphosis of different
species. The first hypothesis has produced the doctrine of
elementary properties, the second that of occult properties
and specific powers; and both lead to trifling courses of re-
flection, in which the mind acquiesces, and is thus diverted
from more important subjects. But physicians exercise a
much more useful labor in the consideration of the second-
ary qualities of things, and the operations of attraction, re-
pulsion, attenuation, inspissation, dilatation, astringency,
separation, maturation, and the like; and would do still
more if they would not corrupt these proper observations
by the two systems I have alluded to, of elementary quali-
ties and specific powers, by which they either reduce the
secondary to first qualities, and their subtile and immeas-

28 In mechanics and the general sciences, causes compound their effects, or
in other words, it is generally possible to deduce @ priori the consequence of
introducing complex agencies into any experiment, by allowing for the effect
of each of the simple causes which enter into their composition. In chemistry
and physiology a contrary law holds; the causes which they embody generally
uniting to form distinct substances, and to introduce unforeseen laws and com-
binations. The deductive method here is consequently inapplicable, and we are
forced back upon experiment.

Bacon in the text is hardly consistent with himself, as he admits in the
second book the doctrine, to which modern discovery points, of the reciprocal
transmutation of the elements. What seemed poetic fiction in the theories of
Pythagoras and Seneca, assumes the appearance of scientific fact in the hande
of Baron Caynard.—Zd,

40 NOVUM ORGANUM

urable composition, or at any rate neglect to advance
by greater and more diligent observation to the third
and fourth qualities, thus terminating their contemplation
prematurely. Nor are these powers (or the like) to be in-
vestigated only among the medicines for the human body,
but also in all changes of other natural bodies.

A greater evil arises from the contemplation and inves-
tigation rather of the stationary principles of things from
which, than of the active by which things themselves are
created. For the former only serve for discussion, the lat-
ter for practice. Nor is any value to be set on those com-
mon differences of motion which are observed in the received
system of natural philosophy, as generation, corruption, aug-
mentation, diminution, alteration, and translation. For this
is their meaning: if a body, unchanged in other respects, is
moved from its place, this is translation; if the place and
species be given, but the quantity changed, it is alteration;
but if, from such a change, the mass and quantity of the
body do not continue the same, this is the motion of aug-
mentation and diminution; if the change be continued so as
to vary the species and substance, and transfuse them to
others, this is generation and corruption. All this is merely
popular, and by no means penetrates into nature; and these
are but the measures and bounds of motion, and not differ-
ent species of it; they merely suggest how far, and not how
or whence. For they exhibit neither the affections of bodies
nor the process of their parts, but merely establish a divi-
sion of that motion, which coarsely exhibits to the senses
matter in its varied form. Even when they wish to point
out something relative to the causes of motion, and to estab-
lish a division of them, they most absurdly introduce nat-
ural and violent motion, which is also a popular notion,

NOVUM ORGANUM 4)

since every violent motion is also in fact natural, that is to
say, the external efficient puts nature in action in a different
manner to that which she had previously employed.

But if, neglecting these, any one were, for instance, to
observe-that there is in bodies a tendency of adhesion, so as
not to suffer the unity of nature to be completely separated
or broken, and a vacuum” to be formed, or that they have a
tendency to return to their natural dimensions or tension, so
that, if compressed or extended within or beyond it, they
immediately strive to recover themselves, and resume their
former volume and extent; or that they have a tendency to
congregate into masses with similar bodies—the dense, for
instance, toward the circumference of the earth, the thin
and rare toward that of the heavens. These and the like
are true physical genera of motions, but the others are
clearly logical and scholastic, as appears plainly from a
comparison of the two.

Another considerable evil is, that men in their systems
and contemplations bestow their labor upon the investiga-
tion and discussion of the principles of things and the ex-
treme limits of nature, although all utility and means of
action consist in the intermediate objects. Hence men
cease not to abstract nature till they arrive at potential and
shapeless matter,” and still persist in their dissection, till

*9 Galileo had recently adopted the notion that nature abhorred a vacuum
for an axiomatic principle, and it was not till Torricelli, his disciple, had given
practical proof of the utility of Bacon’s method, by the discovery of the barom-
eter (1643) that this error, as also that expressed below, and believed by Bacon,
concerning the homceopathic tendencies of bodies, was destroyed.—£d.

30 Donec ad materiam potentialem et informem ventum fuerit. Nearly all
the ancient philosophers admitted the existence of a certain primitive and
shapeless matter as the substratum of things which the creative power had
reduced to fixed proportions, and resolved into specific substances, The ex-

42 NOVUM ORGANUM

they arrive at atoms; and yet were all this true, it would
be of little use to advance man’s estate.

LXVII. The understanding must also be cautioned
against the intemperance of systems, so far as regards its
giving or withholding its assent; for such intemperance ap-
pears to fix and perpetuate idols, so as to leave no means
of removing them.

These excesses are of two kinds. The first is seen in
those who decide hastily, and render the sciences positive
and dictatorial. The other in those who have introduced
scepticism, and vague unbounded inquiry. The former sub-
dues, the latter enervates the understanding. The Aristo-
telian philosophy, after destroying other systems (as the
Ottomans” do their brethren) by its disputatious confuta-
tions, decided upon everything, and Aristotle himself then
raises up questions at will, in order to settle them; so that
everything should be certain and decided, a method now in
use among his successors.

The school of Plato introduced scepticism, first, as it
were in joke and irony, from their dislike to Protagoras,
Hippias,* and others, who were ashamed of appearing not

pression potential matter refers to that substance forming the basis of the
Peripatetic system, which virtually contained all the forms that it was in the
power of the efficient cause to draw out of it.—d.

31 An allusion to the humanity of the Sultans, who, in their earlier histories
are represented as signalizing their accession to the throne by the destruction of
their family, to remove the danger of rivalry and the terrors of civil war.—£d,

32 The text is ‘‘in odium veterum sophistarum, Protagore, Hippie, et reli-
quorum.’’ Those were called sophists, who, ostentationis aut questus causa
philosophabantur. (Acad. Prior, ii. 22.) They had corrupted and degraded
philosophy before Socrates. Protagoras of Abdera (A8énpe), the most cele-
brated, taught that man is the measure of all things, by which he meant not
only that all which can be known is known only as it related to our faculties,
but also that apart from our faculties nothing can be known. The sceptics

NOVUM ORGANUM 435

to doubt upon any subject. But the new academy dog-
matized in their scepticism, and held it as their tenet.
Although this method be more honest than arbitrary deci-
sion (for its followers allege that they by no means con-
found all inquiry, like Pyrrho and his disciples, but hold
doctrines which they can follow as probable, though they
cannot maintain them to be true), yet when the human
mind has once despaired of discovering truth, everything
begins to languish. Hence men turn aside into pleasant
controversies and discussions, and into a sort of wandering
over subjects rather than sustain any rigorous investigation.
But as we observed at first, we are not to deny the authority
of the human senses and understanding, although weak, but
rather to furnish them with assistance.

LXVIIT. We have now treated of each kind of idols,
and their qualities, all of which must be abjured and re-
nounced with firm and solemn resolution, and the under-
standing must be completely freed and cleared of them, so
that the access to the kingdom of man, which is founded
on the sciences, may resemble that to the kingdom of
heaven, where no admission is conceded except to children.

LX1X. Vicious demonstrations are the muniments and
support of idols, and those which we possess in logic, merely
subject and enslave the world to human thoughts, and
thoughts to words. But demonstrations are in some man-
ner themselves systems of philosophy and science; for such
as they are, and accordingly as they are regularly or im-

equally held that knowledge was probable only as it related to our faculties,
but they stopped there, and did not, like the sophist, dogmatize about the un-
known. The works of Protagoras were condemned for their impiety, and
oublicly burned by the ediles of Athens, who appear to have discharged the
office of common hangmen to the literary blasphemers of their day.—Ed.

44 NOVUM ORGANUM

properly established, such will be the resulting systems
of philosophy and contemplation. But those which we
employ in the whole process leading from the senses and
things to axioms and conclusions, are fallacious and incom-
petent. This process is fourfold, and the errors are in equal
number. In the first place the impressions of the senses are
erroneous, for they fail and deceive us. We must supply
defects by substitutions, and fallacies by their correction.
Secondly, notions are improperly abstracted from the senses,
and indeterminate and confused when they ought to be the
reverse. Thirdly, the induction that is employed is im-
proper, for it determines the principles of sciences by simple
enumeration,** without adopting exclusions and resolutions,
or just separations of nature. Lastly, The usual method of
discovery and proof, by first establishing the most general
propositions, then applying and proving the intermediate
axioms according to them, is the parent of error and the
calamity of every science. But we will treat more fully

33 Bacon is hardly correct in implying that the enwmerationem per simplicem
was the only light in which the ancients looked upon induction, as they appear
to have regarded it as only one, and that the least important, of its species.
Aristotle expressly considers induction in a perfect or dialectic sense, and in
an imperfect or rhetorical sense. Thus if a genus (G), contains four species
(A, B, ©, D), the syllogism would lead us to infer, that what is true of G, is
true of any one of the four. But perfect induction would reason, that what
we can prove of A, B, C, D, separately, we may properly state as true of &@, the
whole genus. This is evidently a formal argument as demonstrative as the syl-
logism. In necessary matters, however, legitimate induction may claim a wider
province, and infer of the whole genus what is only apparent in a part of the
species. Such are those inductive inferences which concern the laws of nature,
the immutability of forms, by which Bacon strove to erect his new system of
philosophy. The Stagyrite, however, looked upon enumerationem per simpli-
cem, without any regard to the nature of the matter, or to the completeness
of the species, with as much reprehensive caution as Bacon, and guarded his
readers against it as the source of innumerable errors.—£d,

NOVUM ORGANUM 45

of that which we now slightly touch upon, when we come
to lay down the true way of interpreting nature, after hav-
ing gone through the above expiatory process and puritica-
tion of the mind.

LXX. But experience is by far the best demonstration,
provided it adhere to the experiment actually made, for if
that experiment be transferred to other subjects apparently
similar, unless with proper and methodical caution it be-
comes fallacious. The present method of experiment is {|
blind and stupid; hence men wandering and roaming with-
out any determined course, and consulting mere chance,
are hurried about to various points, and advance but little
—at one time they are happy, at another their attention is
distracted, and they always find that they want something
further. Men generally make their experiments carelessly,
and as it were in sport, making some little variation in a
known experiment, and then if they fail they become dis-
gusted and give up the attempt; nay, if they set to work
more seriously, steadily, and assiduously, yet they waste |
all their time on probing some solitary matter, as Gilbert i
on the magnet, and the alchemists on gold. But such con- |
duct shows their method to be no less unskilful than mean;
for nobody can successfully investigate the nature of any
object by considering that object alone; the inquiry must
be more generally extended.

Kven when men build any science and Aheo we upon ex-
periment, yet they almost always turn with premature and
hasty zeal to practice, not merely on account of the advan-
tage and benefit to be derived from it, but in order to seize
upon some security in a new undertaking of their not em-
ploying the remainder of their labor unprofitably, and by
making themselves conspicuous, to acquire a greater name

46 NOVUM ORGANUM

for their pursuit. Hence, like Atalanta, they leave the
course to pick up the golden apple, interrupting their
speed, and giving up the victory. But in the true course
of experiment, and in extending it to new effects, we should
imitate the Divine foresight and order; for God on the first
day only created light, and assigned a whole day to that
work without creating any material substance thereon. In
like manner we must first, by every kind of experiment,
elicit the discovery of causes and true axioms, and seek for
experiments which may afford light rather than profit.
Axioms, when rightly investigated and established, pre-
pare us not for a limited but abundant practice, and bring
in their train whole troops of effects. But we will treat
hereafter of the ways of experience, which are not less
beset and interrupted than those of judgment; having
spoken at present of common experience only as a bad
species of demonstration, the order of our subject now re-
quires some mention of those external signs of the weakness
in practice of the received systems of philosophy and con-
templation™ which we referred to above, and of the causes
of a circumstance at first sight so wonderful and incredible.
For the knowledge of these external signs prepares the way
for assent, and the explanation of the causes removes the
wonder; and these two circumstances are’ of material use
in extirpating more easily and gently the idols from the
understanding.

LXXI. The sciences we possess have been principally
derived from the Greeks; for the addition of the Roman,
Arabic, or more modern writers, are but few and of small
importance, and such as they are, are founded on the basis

#4 See Ax. lxi. toward the end. This subject extends to Ax. lxxviii.

NOVUM ORGANUM 47

of Greek invention. But the wisdom of the Greeks was
professional and disputatious, and thus most adverse to the
investigation of truth. The name, therefore, of sophists,
which the contemptuous spirit of those who deemed them-
selves philosophers, rejected and transferred to the rhetori-
cians—Gorgias, °° Protagoras, Hippias, Polus—might well suit
the whole tribe, such as Plato, Aristotle, Zeno, Epicurus,
Theophrastus, and their successors—Chrysippus, Carneades,
and the rest. There was only this difference between them
—the former were mercenary vagabonds, travelling about
to different states, making a show of their wisdom, and re-
quiring pay; the latter more dignified and noble, in pos-
session of fixed habitations, opening schools, and teaching
philosophy gratuitously. Both, however (though differing
in other respects), were professorial, and reduced every sub-
ject to controversy, establishing and defending certain sects
and dogmas of philosophy, so that their doctrines were
nearly (what Dionysius not unaptly objected to Plato) the
talk of idle old men to ignorant youths. But the more
ancient Greeks, as Empedocles, Anaxagoras, Leucippus, De-
mocritus, Parmenides, Heraclitus, Xenophanes, Philolaus,
and the rest** (for I omit Pythagoras as being superstitious),

%> Gorgias of Leontium went to Athens in 424 B.C. He and Polus were
disciples of Empedocles, whom we have already noticed (Aphorism 63), where he
sustained the three famous propositions, that nothing exists, that nothing can be
known, and that it is out of the power of man to transmit or communicate intel-
ligence. He is reckoned one of the earliest writers on the art of rhetoric, and
for that reason, Plato called his elegant dialogue on that subject after his name.

6 Chrysippus, a stoic philosopher of Soli in Cilicia, Campestris, born in 280,
died in the 143d Olympiad, 208 B.C. He was equally distinguished for natural
‘nilities and industry, seldom suffering a day to elapse without writing 500
lines. He wrote several hundred volumes, of which three hundred were on
‘ogical subjects; but in all, borrowed largely from others. He was very fond
oi the sorites in argument, which is hence called by Persius the heap of Chry-

48 NOVUM ORGANUM

did not (that we are aware) open schools, but betook them-
selves to the investigation of truth with greater silence and
with more severity and simplicity, that is, with less affecta-
tion and ostentation. Hence in our opinion they acted more
advisedly, however their works may have been eclipsed in
course of time by those lighter productions which better
correspond with and please the apprehensions and passions
of the vulgar; for time, like a river,*’ bears down to us that

sippus. He was called the Column of the Portico, a name given to the Stoical
School from Zeno, its founder, who had given his lessons under the portico.

Carneades, born about 215, died in 130. He attached himself to Chrysip-
pus, and sustained with éclat the scepticism of the academy. The Athenians
sent him with Critolaus and Diogenes as ambassador to Rome, where he at-
tracted the attention of his new auditory by the subtilty of his reasoning, and
the fluency and vehemence of his language. Before Galba and Cato the Censor,
he harangued with great variety of thought and copiousness of diction in praise --
of justice. The next day, to establish his doctrine of the uncertainty of human
knowledge, he undertook to refute all his arguments. He maintained with the
New Academy, that the senses, the imagination, and the understanding fre- *
quently deceive us, and therefore cannot be infallible judges of truth, but that
from the impressions produced on the mind by means of the senses, we infer
appearances of truth or probabilities. Nevertheless, with respect to the conduct
of life, Carneades held that probable opinions are a sufficient guide.

Xenophanes, a Greek philosopher, of Colophon, born in 556, the founder of
the Eleatic school, which owes its fame principally to Parmenides. Wild in his
opinions about astronomy, he supposed that the stars were extinguished every
morning, and rekindled at night; that eclipses were occasioned by the tempo-
rary extinction of the sun, and that there were several suns for the convenience
of the different climates of the earth. Yet this man held the chair of philoso-
phy at Athens for seventy years.

Philolaus, a Pythagorean philosopher of Crotona, B.C. 374. He first sup-
ported the diurnal motion of the earth round its axis, and its annual motion
round the sun. Cicero (Acad. iv. 39) has ascribed this opinion to the Syracu-
san philosopher Nicetas, and likewise to Plato. From this passage, it is most
probable that Copernicus got the idea of the system he afterward cstablished,
Bacon, in the Advancement of Human Learning, charges Gilbert with restoring
the doctrines of Philolaus, because he ventured to support the Copernican
theory.—£d.

31 Bacon is equally conspicuous for the use and abuse of analogical illustra-
tions. The levity, as Stuart Mill very properly observes, by which substances

NOVUM ORGANUM 49

which is light and inflated, and sinks that which is heavy
and solid. Nor were even these more ancient philosophers
free from the national defect, but inclined too much to the
ambition and vanity of forming a sect, and captivating
public opinion, and we must despair of any inquiry after
truth when it condescends to such trifles. Nor must we
omit the opinion, or rather prophecy, of an Egyptian priest
with regard to the Greeks, that they would forever remain
children, without any antiquity of knowledge or knowledge
of antiquity; for they certainly have this in common with
children, that they are prone to talking, and incapable of
generation, their wisdom being loquacious and unproduc-
tive of effects. Hence the external signs derived from the
origin and birthplace of our present philosophy are not
favorable. ,

LXXII. Nor are those much better which can be de-
duced from the character of the time and age, than the
former from that of the country and nation; for in that age
the knowledge both of time and of the world was confined
and meagre, which is one of the worst evils for those who
rely entirely on experience—they had not a thousand years
of history worthy of that name, but mere fables and ancient
traditions; they were acquainted with but a small portion
of the regions and countries of the world, for they indis-
criminately called all nations situated far toward the north
“eythians, all those to the west Celts; they knew nothing
of Africa but the nearest part of Ethiopia, or of Asia be-

float on a stream, and the levity which is synonymous with worthlessness, have
nothing beside the name in common; and to show how little value there is in
the igure, we need only change the word into buoyancy, to turn the semblance
of Pacon’s argument against himself—£Zd.

OU NOVUM ORGANUM

yond the Ganges, and had not even heard any sure and
clear tradition of the regions of the New World. Besides,
a vast number of climates and zones, in which innumerable
nations live and breathe, were pronounced by them to be
uninhabitable; nay, the travels of Democritus, Plato, and
Pythagoras, which were not extensive, but rather mere
excursions from home, were considered as something vast.
But in our times many parts of the New World, and every
extremity of the Old, are well known, and the mass of
experiments has been infinitely increased; wherefore, if ex-
ternal signs were to be taken from the time of the nativity
or procreation (as in astrology), nothing extraordinary could
be predicted of these early systems of philosophy.
UXXIIT. Of all signs there is none more certain or
worthy than that of the fruits produced, for the fruits and
effects are the sureties and vouchers, as it were, for the
truth of philosophy. Now, from the systems of the Greeks,
and their subordinate divisions in particular branches of the
sciences during so long a period, scarcely one single experi-
ment can be culled that has a tendency to elevate or assist
mankind, and can be fairly set down to the speculations
and doctrines of their philosophy. Celsus candidly and
wisely confesses as much, when he observes that experi-
ments were first discovered in medicine, and that men after-
ward built their philosophical systems upon them, and
searched for and assigned causes, instead of the inverse
method of discovering and deriving experiments from phi-
losophy and the knowledge of causes; it is not, therefore,
wonderful that the Egyptians (who bestowed divinity and
sacred honors on the authors of new inventions) should
have consecrated more images of brutes than of men, for
the brutes by their natural instinct made many discoveries,

NOVUM ORGANUM 51

while men derived but few from discussion and the con-
clusions of reason.

The industry of the alchemists has produced some effect,
by chance, however, and casualty, or from varying their ex-
periments (as mechanics also do), and not from any regular
art or theory, the theory they have imagined rather tending
to disturb than to assist experiment. Those, too, who have
occupied themselves with natural magic (as they term it)
have made but few discoveries, and those of small import,
and bordering on imposture; for which reason, in the same
manner as we are cautioned by religion to show our faith
by our works, we may very properly apply the principle to
philosophy, and judge of it by its works, Accounting that to
be futile which is unproductive, and still more so if, instead
~of grapes and olives, it yield but the thistle and thorns of
dispute and contention.

LXXIV. Other signs may be selected from the increase
and progress of particular systems of philosophy and the
sciences; for those which are founded on nature grow and)
increase, while those which are founded on opinion change
and increase not. If, therefore, the theories we have men-
tioned were not like plants, torn up by the roots, but grew
in the womb of nature, and were nourished by her, that
which for the last two thousand years has taken place would
never have happened, namely, that the sciences still con-
tinue in their beaten track, and nearly stationary, without
having received any important increase, nay, having, on
the contrary, rather bloomed under the hands of their first
author, and then faded away. But we see that the case is
reversed in the mechanical arts, which are founded on na-
ture and the light of experience, for they (as long as they |

are popular) seem full of life, and uninterruptedly thrive and
ScrencE— Vol, 228 —3

52 NOVUM ORGANUM

grow, being at first rude, then convenient, lastly ene
and perpetually improved.

LXXV. There is yet another sign (if such it may be
termed, being rather an evidence, and one of the strongest
nature), namely, the actual confession of those very authori-
ties whom men now follow; for even they who decide on
things so daringly, yet at times, when they reflect, betake
themselves to complaints about the subtilty of nature, the
obscurity of things, and the weakness of man’s wit. If they
would merely do this, they might perhaps deter those who
are of a timid disposition from further inquiry, but would
excite and stimulate those of a more active and confident
turn to further advances. They are not, however, satisfied
with confessing so much of themselves, but consider every-
thing which has been either unknown or unattempted by
themselves or their teachers, as beyond the limits of possi-
bility, and thus, with most consummate pride and envy,
convert the defects of their own discoveries into a calumny
on nature and a source of despair to every one else. Hence
arose the New Academy, which openly professed scepti-
cism,** and consigned mankind to eternal darkness; hence
the notion that forms, or the true differences of things (which
are in fact the laws of simple action), are beyond man’s

88 We have before observed, that the New Academy did not profess skep-
ticism, but the akardAnyra, or incomprehensibility of the absolute essences of
things. Even modern physicists are not wanting, to assert with this school
that the utmost knowledge we can obtain is relative, and necessarily short of
absolute certainty. It is not without an appearance of truth that these philoso-
phers maintain that our ideas and perceptions do not express the nature of the
things which they represent, but only the effects of the peculiar organs by
which they are conveyed to the understanding, so that were these organs
changed, we should have different conceptions of their nature. That constitu-
tion of air which is dark to man is luminous to bats and owls.

NOVUM ORGANUM 58

reach, and cannot possibly be discovered; hence those no-
tions in the active and operative branches, that the heat of
the sun and of fire are totally different, so as to prevent men
from supposing that they can elicit or form, by means of
fire, anything similar to the operations of nature; and again,
that composition only is the work of man and mixture of
nature, so as to prevent men from expecting the generation
or transformation of natural bodies by art. Men will, there-
fore, easily allow themselves to be persuaded by this sign
not to engage their fortunes and labor in speculations,
which are not only desperate, but actually devoted to des-
peration.

LXXVI. Nor should we omit the sign afforded by the
great dissension formerly prevalent among philosophers, and
the variety of schools, which sufficiently show that the way
was not well prepared that leads from the senses to the
understanding, since the same groundwork of philosophy
(namely, the nature of things), was torn and divided into
such widely differing and multifarious errors. And al-
though in these days the dissensions and differences of
opinions with regard to first principles and entire systems
are nearly extinct, yet there remain innumerable questions
and controversies with regard to particular branches of phi-
losophy. So that it is manifest that there is nothing sure or
sound either in the systems themselves or in the methods of
demonstration.*

LXXVII. With regard to the supposition that there is a
general unanimity as to the philosophy of Aristotle, because

3 Owing to the universal prevalence of Aristotelism.
40 It must be remembered, that when Bacon wrote, algebra was in its
iafancy, and the doctrine of units and infinitesimals undiscovered.

54 NOVUM ORGANUM

the other systems of the ancients ceased and became obso-
lete on its promulgation, and nothing better has been since
discovered; whence it appears that it is so well determined
and founded, as to have united the suffrages of both ages;
we will observe—Ist. That the notion of other ancient sys-
tems having ceased after the publication of the works of
Aristotle is false, for the works of the ancient philosophers
subsisted long after that event, even to the time of Cicero,
and the subsequent ages. But at a later period, when
human learning had, as it were, been wrecked in the inun-
dation of barbarians into the Roman empire, then the sys-
tems of Aristotle and Plato were preserved in the waves of
ages, like planks of a lighter and less solid nature. 2d. The
notion of unanimity, on a clear inspection, is found to be
fallacious. Jor true unanimity is that which proceeds from
a free judgment, arriving at the same conclusion, after an
investigation of the fact. Now, by far the greater number
of those who have assented to the philosophy of Aristotle,
have bound themselves down to it from prejudice and the
authority of others, so that itis rather obsequiousness and
concurrence than unanimity. But even if it were real and
extensive unanimity, so far from being esteemed a true
and solid confirmation, it should even lead to a violent pre-
sumption to the contrary. For there is no worse augury in
intellectual matters than that derived from unanimity, with
the exception of divinity and politics, where suffrages are
allowed to decide. For nothing pleases the multitude, un-
less it strike the imagination or bind down the understand-
ing, as we have observed above, with the shackles of vulgar
notions. Hence we may well transfer Phocion’s remark
from morals to the intellect: ‘‘That men should immediate! y
examine what error or fault they have committed, when the

ae

NOVUM ORGANUM 55

multitude concurs with, and applauds them.’’‘*’ This then
is one of the most unfavorable signs. All the signs, there-
fore, of the truth and soundness of the received systems of
philosophy and the sciences are unpropitious, whether taken
from their origin, their fruits, their progress, the confessions
of their authors, or from unanimity. ss
LXXVIII. We now come to the causes of errors,*? and
of such perseverance in them for ages. These are suffi-
ciently numerous and powerful to remove all wonder, that
what we now offer should have so long been concealed from,
and have escaped the notice of mankind, and to render it
more worthy of astonishment, that it should even now have
entered any one’s mind, or become the subject of his
thoughts; and that it should have done so, we consider
rather the gift of fortune than of any extraordinary talent,
and as the offspring of time rather than wit. But, in the
first place, the number of ages is reduced to very narrow
limits, on a proper consideration of the matter. For out of
twenty-five*® centuries, with which the memory and learn-

41 Because the vulgar make up the overwhelming majority in such decisions,
and generally allow their judgments to be swayed by passion or prejudice.

42 See end of Axiom lxi. The subject extends to Axiom xe.

43 If we adopt the statement of Herodotus, who places the Homeric era 400
years back from his time, Homer lived about 900 years before Christ. On add-
ing this number to the sixteen centuries of the Christian era which had elapsed
up to Bacon’s time, we get the twenty-five centuries he mentions. The Homeric
epoch is the furthest point in antiquity from which Bacon could reckon with
any degree of certainty. Hesiod, if he were not contemporary, immediately
preceded him.

.The epoch of Greek philosophy may be included between Thales and Plato,
that is, from the 35th to the 88th Olympiad; that of the Roman, between
Terence and Pliny. The modern revolution, in which Bacon is one of the
central figures, took its rise from the time of Dante and Petrarch, who lived
at the commencement of the fourteenth century; and to which, on account of
the invention of printing, and the universal spread of literature, which has ren-

56 NOVUM ORGANUM

ing of man are conversant, scarcely six can be set apart and
selected as fertile in science and favorable to its progress.
For there are deserts and wastes in times as in countries,
and we can only reckon up three revolutions and epochs of
philosophy. 1. The Greek. 2. The Roman. 3. Our own,
that is the philosophy of the western nations of Europe:
and scarcely two centuries can with justice be assigned to
each. The intermediate ages of the world were unfortunate
both in the quantity and richness of the sciences produced.
Nor need we mention the Arabs, or the scholastic philoso-
phy, which, in those ages, ground down the sciences by
their numerous treatises, more than they increased their
weight. The first cause, then, of such insignificant prog-
ress in the sciences, is rightly referred to the small propor-
tion of time which has been favorable thereto.

LXXIX. A second cause offers itself, which is certainly
of the greatest importance; namely, that in those very ages
in which men’s wit and literature flourished considerably,
or even moderately, but a small part of their industry was
bestowed on natural philosophy, the great mother of the
sciences. For every art and science torn from this root
may, perhaps, be polished, and put into a serviceable shape,
but can admit of little growth. It is well known, that after
the Christian religion had been acknowledged, and arrived
at maturity, by far the best wits were busied upon theology,
where the highest rewards offered themselves, and every
species of assistance was abundantly supplied, and the study
of which was the principal occupation of the western Euro-
pean nations during the third epoch; the rather because

dered a second destruction of learning impossible, it is difficult to foresee any
other end than the extinction of the race of man. —Ed.

NOVUM ORGANUM Dt

literature flourished about the very time when controver-
sies concerning religion first began to bud forth. 2. In the
preceding ages, during the second epoch (that of the Ro-
mans), philosophical meditation and labor was chiefly occu-
pied and wasted in moral philosophy (the theology of the
heathens): besides, the greatest minds in these times applied
themselves to civil affairs, on account of the magnitude of
the Roman empire, which required the labor of many.
3. The age during which natural philosophy appeared
principally to flourish among the Greeks, was but a short
period, since in the more ancient times the seven sages
(with the exception of Thales), applied themselves to moral
philosophy and politics, and at a later period, after Socrates
had brought down philosophy from heaven to earth, moral
philosophy became more prevalent, and diverted men’s
attention from natural. Nay, the very period during which
physical inquiries flourished, was corrupted and rendered
useless by contradictions, and the ambition of new opinions.
Since, therefore, during these three epochs, natural philoso-
phy has been materially neglected or impeded, it is not at
all surprising that men should have made but little progress
in it, seeing they were attending to an entirely different
matter.

LXXX. Add to this that natural philosophy, especially
of late, has seldom gained exclusive possession of an indi-
vidual free from all other pursuits, even among those who
have applied themselves to it, unless there may be an ex-
ample or two of some monk studying in his cell, or some
nobleman in his villa.** She has rather been made a pas-

sage and bridge to other pursuits.

“ The allusion is evidently to Roger Bacon and Réné Descartes. —Ed.

58 NOVUM ORGANUM

Thus has this great mother of the sciences been degraded
most unworthily to the situation of a handmaid, and made
to wait upon medicine or mathematical operations, and to
wash the immature minds of youth, and imbue them with a
first dye, that they may afterward be more ready to receive
and retain another. In the meantime, let no one expect any
great progress in the sciences (especially their operative part),
unless natural philosophy be applied to particular sciences,
and particular sciences again referred back to natura] phi-
losophy. For want of this, astronomy, optics, music, many
mechanical arts, medicine itself, and (what perhaps is more
wonderful), moral and political philosophy, and the logical
sciences have no depth, but only glide over the surface and
variety of things; because these sciences, when they have
been once partitioned out and established, are no longer
nourished by natural philosophy, which would have im-
parted fresh vigor and growth to them from the sources and
genuine contemplation of motion, rays, sounds, texture, and
conformation of bodies, and the affections and capacity of
the understanding. But we can little wonder that the sci-
ences grow not when separated from their roots.

LXXXI. There is another powerful and great cause of
the little advancement of the sciences, which is this; it is
impossible to advance properly in the course when the goal
is not properly fixed. But the real and legitimate goal of
the sciences is the endowment of human life with new in-
ventions and riches. The great crowd of teachers know
nothing of this, but consist of dictatorial hirelings; unless
it so happen that some artisan of an acute genius, and am-
bitious of fame, gives up his time to a new discovery, which
is generally attended with a loss of property. The major-
ity, so far from proposing to themselves the augmentation

NOVUM ORGANUM 59

of the mags of arts and sciences, make no other use of an in-
quiry into the mass already before them, than is afforded by
the conversion of it to some use in their lectures, or to gain,
or to the acquirement of a name, and the like. Butif one
out of the multitude be found, who courts science from real
zeal, and on his own account, even he will be seen rather to
follow contemplation, and the variety of theories, than a
severe and strict investigation of truth. Again, if there
even be an unusually strict investigator of truth, yet will
he propose to himself, as the test of truth, the satisfaction
of his mind and understanding, as to the causes of things
long since known, and not such a test as to lead to some
new earnest of effects, and a new light in axioms. If, there-
fore, no one have Jaid down the real end of science, we can-
not wonder that there should be error in points subordinate
to that end.

LXXXII. But, in like manner, as the end and goal of
science is ill defined, so, even were the case otherwise, men
have chosen an erroneous and impassable direction. For it
is sufficient to astonish any reflecting mind, that nobody
should have cared or wished to open and complete a way for
the understanding, setting off from the senses, and regular,
well-conducted experiment; but that everything has been
abandoned either to the mists of tradition, the whirl and con-
fusion of argument, or the waves and mazes of chance, and
desultory, ill-combined experiment. Now, let any one but
consider soberly and diligently the nature of the path men
have been accustomed to pursue in the investigation and
discovery of any matter, and he will doubtless first observe
the rude and inartificial manner of discovery most familiar
to mankind: which is no other than this. When any one
prepares himself for discovery, he first inquires and obtains

60 NOVUM ORGANUM

a full account of all that has been said on the subject by
others, then adds his own reflections, and stirs up and, as it
were, invokes his own spirit, after much mental labor, to
disclose its oracles. All which is a method without founda-
tion, and merely turns on opinion.

Another, perhaps, calls in logic to assist him in discov-
ery, which bears only a nominal relation to his purpose.
For the discoveries of logic are not discoveries of principles
and leading axioms, but only of what appears to accord with
them.** And when men become curious and importunate,
and give trouble, interrupting her about her proofs, and the
discovery of principles or first axioms, she puts them off
with her usual answer, referring them to faith, and ordering
them to swear allegiance to each art in its own department.

There remains but mere experience, which, when it offers
itself, is called chance; when it is sought after, experiment.**
But this kind of experience is nothing but a loose fagot;
and mere groping in the dark, as men at night try all means
of discovering the right road, while it would be better and
more prudent either to wait for day, or procure a light, and
then proceed. On the contrary, the real order of experience
begins by setting up a light, and then shows the road by it,
commencing with a regulated and digested, not a misplaced
and vague course of experiment, and thence deducing
axioms, and from those axioms new experiments: for not
even the Divine Word proceeded to operate on the general
mass of things without due order.

Let men, therefore, cease to wonder if the whole course

*© From the abuse of the scholastics, who mistook the @ priori method, the
deductive syllogism, for the entire province of logic.—d,
46 See Aphorism xcv.

NOVUM ORGANUM 61

of science be not run, when all have wandered from the
path; quitting it entirely, and deserting experience, or in-
volving themselves in its mazes, and wandering about, while
a regularly combined system would lead them ina sure track
through its wilds to the open day of axioms.

LXXXITI. The evil, however, has been wonderfully in-
creased by an opinion, or inveterate conceit, which is both
vainglorious and prejudicial, namely, that the dignity of the
human mind is lowered by long and frequent intercourse
with experiments and particulars, which are the objects of
sense, and confined to matter; especially since such matters
generally require labor in investigation, are mean subjects
for meditation, harsh in discourse, unproductive in practice,
infinite in number, and delicate in their subtilty. Hence
we have seen the true path not only deserted, but inter-
cepted and blocked up, experience being rejected with dis-
gust, and not merely neglected or improperly applied.

LXXXIV. Again, the reverence for antiquity,‘’ and the
authority of men who have been esteemed great in philoso-
phy, and general unanimity, have retarded men from ad-
vancing in science, and almost enchanted them. As to
unanimity, we have spoken of it above.

The opinion which men cherish of antiquity is altogether
idle, and scarcely accords with the term. For the old age
and increasing years of the world should in reality be con-
sidered as antiquity, and this is rather the character of our
own times than of the less advanced age of the world in
those of the ancients; for the latter, with respect to our-

“7 The incongruity to which Bacon alludes appears to spring from confound-
ing two things, which are not only distinct, but affect human knowledge in
inverse proportion, viz., the experience which terminates with life, with that
experience which one century transmits to another.—Zd.

62 NOVUM ORGANUM

selves, are ancient and elder, with respect to the world mod-
ern and younger. And as we expect a greater knowledge
of human affairs, and more mature judgment from an old
man than from a youth, on account of his experience, and
the variety and number of things he has seen, heard, and
meditated upon, so we have reason to expect much greater
things of our own age (if it knew but its strength and would
essay and exert it) than from antiquity, since the world has
grown older, and its stock has been increased and accumu-
lated with an infinite number of experiments and observa-
tions. |

We must also take into our consideration that many ob-
jects in nature fit to throw light upon philosophy have been
exposed to our view, and discovered by means of long voy-
ages and travels, in which our times have abounded. It
would, indeed, be dishonorable to mankind, if the regions
of the material globe, the earth, the sea, and stars, should
be so prodigiously developed and illustrated in our age, and
yet the boundaries of the intellectual globe should be con-
fined to the narrow discoveries of the ancients.

With regard to authority, it is the greatest weakness to
attribute infinite credit to particular authors, and to refuse
his own prerogative to time, the author of all authors, and,
therefore, of all authority. For truth is rightly named the
daughter of time, not of authority. It is not wonderful,
therefore, if the bonds of antiquity, authority, and unanim-
ity, have so enchained the power of man, that he is unable
(as if bewitched) to become familiar with things themselves.

LXXXYV. Nor is it only the admiration of antiquity,
authority, and unanimity, that has forced man’s industry
to rest satisfied with present discoveries, but, also, the ad-
miration of the effects already placed within his power. For

NOVUM ORGANUM ; 63

whoever passes in review the variety of subjects, and the
beautiful apparatus collected and introduced by the me-
chanical arts for the service of mankind, will certainly be
rather inclined to admire our wealth than to perceive our
poverty: not considering that the observations of man and
operations of nature (which are the souls and first movers of
that variety) are few, and not of deep research; the rest
must be attributed merely to man’s patience, and the deli-
cate and well-regulated motion of the hand or of instru-
ments. To take an instance, the manufacture of clocks is
delicate and accurate, and appears to imitate the heavenly
bodies in its wheels, and the pulse of animals in its regular
oscillation, yet it only depends upon one or two axioms of
nature.

| Again, if one consider the refinement of the liberal arts,
or even that exhibited in the preparation of natural bodies
in mechanical arts and the like, as the discovery of the
heavenly motions in astronomy, of harmony in music, of
the letters of the alphabet** (still unadopted by the Chinese)
in grammar; or, again, in mechanical operations, the pro-
ductions of Bacchus and Ceres, that is, the preparation of
wine and beer, the making of bread, or even the luxuries of
the table, distillation, and the like; if one reflect also, and
consider for how long a period of ages (for all the above, ex-
cept distillation, are ancient) these things have been brought
to their present state of perfection, and (as we instanced in
clocks) to how few observations and axioms of nature they
may be referred, and how easily, and as it were, by obvious
chance or contemplation, they might be discovered, one

—

48 The Chinese characters resemble, in many respects, the hieroglyphics
of the Egyptians, being adapted to represent ideas, not sounds.

64 NOVUM ORGANUM

would soon cease to admire and rather pity the human lot
on account of its vast want and dearth of things and discov-
eries for so many ages. Yet even the discoveries we have
mentioned were more ancient than philosophy and the intel-
lectual arts; so that (to say the truth) when contemplation
and doctrinal science began, the discovery of useful works
ceased.

But if any one turn from the manutfactories to libraries,
and be inclined to admire the immense variety of books
offered to our view, let him but examine and diligently in-
spect the matter and contents of these books, and his aston-
ishment will certainly change its object: for when he finds
no end of repetitions, and how much men do and speak the
same thing over again, he will pass from admiration of this
variety to astonishment at the poverty and scarcity of mat-
ter, which has hitherto possessed and filled men’s minds.

But if any one should condescend to consider such sci-
ences as are deemed rather curious than sound, and takea
full view of the operations of the alchemists or magu, he
will perhaps hesitate whether he ought rather to laugh or
to weep. For the alchemist cherishes eternal hope, and
when his labors succeed not, accuses his own mistakes,
deeming, in his self-accusation, that he has not properly
understood the words of art or of his authors; upon which
he listens to tradition and vague whispers, or imagines there
is some slight unsteadiness in the minute details of his
practice, and then has recourse to an endless repetition of
experiments: and in the meantime, when, in his casual ex-
periments, he falls upon something in appearance new, or
of some degree of utility, he consoles himself with such an
earnest, and ostentatiously publishes them, keeping up his
hope of the final result. Nor can it be denied that the alche-

NOVUM ORGANUM 65

mists have made several discoveries, and presented mankind
with useful inventions. But we may well apply to them the /
fable of the old man, who bequeathed to his sons some gold
buried in his garden, pretending not to know the exact spot,
whereupon they worked diligently in digging the vineyard,
and though they found no gold, the vintage was rendered

more abundant by their labor, =

The followers of natural magic, who explain everything
by sympathy and antipathy, have assigned false powers and
marvellous operations to things by gratuitous and idle con-
jectures: and if they have ever produced any effects, they
are rather wonderful and novel than of any real benefit or
utility.

In superstitious magic (if we say anything at all about
it) we must chiefly observe, that there are only some pecul-
iar and definite objects with which the curious and supersti-
tious arts have, in every nation and age, and even under
every religion, been able to exercise and amuse themselves.
Let us, therefore, pass them over. In the meantime we
cannot wonder that the false notion of plenty should have
occasioned, want.

LXXXVI. The admiration of mankind with regard to
the arts and sciences, which is of itself sufficiently simple
and almost puerile, has been increased by the craft and ar-
tifices of those who have treated the sciences, and delivered
them down to posterity. For they propose and produce
them to our view so fashioned, and as it were masked, as
to make them pass for perfect and complete. For if you
consider their method and divisions, they appear to em-
brace and comprise everything which can relate to the
subject. And although this frame be badly filled up and
resemble an empty bladder, yet it presents to the vul-

66 NOVUM ORGANUM

gar understanding the form and appearance of a perfect
science.

The first and most ancient investigators of truth were
wont, on the contrary, with more honesty and success, to
throw all the knowledge they wished to gather from con-
templation, and to lay up for use, into aphorisms, or short
scattered sentences unconnected by any method, and with-
out pretending or professing to comprehend any entire art.
But according to the present system, we cannot wonder
that men seek nothing beyond that which is handed down
to them as perfect, and already extended to its full com-
plement.

LXXXVIT. The ancient theories have received addi-
tional support and credit from the absurdity and levity of
those who have promoted the new, especially in the active
and practical part of natural philosophy. Tor there have
been many silly and fantastical fellows who, from credulity
or imposture, have loaded mankind with promises, announc-
ing and boasting of the prolongation of life, the retarding
of old age, the alleviation of pains, the remedying of nat-
ural defects, the deception of the senses, the restraint and
excitement of the passions, the illumination and exaltation
of the intellectual faculties, the transmutation of substances,
the unlimited intensity and multiplication of motion, the
impressions and changes of the air, the bringing into our
power the management of celestial influences, the divina-
tion of future events, the representation of distant objects,
the revelation of hidden objects, and the like. One would
not be very wrong in observing with regard to such pre-
tenders, that there is as much difference in philosophy,
between their absurdity and real science, as there is in his-
tory between the exploits of Caesar or Alexander, and thos«

NOVUM ORGANUM 67

of Amadis de Gaul and Arthur of Britain. For those illus-
trious generals are found to have actually performed greater
exploits than such fictitious heroes are even pretended to
have accomplished, by the means, however, of real action,
and not by any fabulous and portentous power. Yet it is
not right to suffer our belief in true history to be dimin-
ished, because it is sometimes injured and violated by
fables. In the meantime we cannot wonder that great
prejudice has been excited against any new propositions
(especially when ‘coupled with any mention of effects to be
produced), by the conduct of impostors who have made a
similar attempt; for their extreme absurdity, and the dis-
gust occasioned by it, has even to this day overpowered
every spirited attempt of the kind.

LXXXVIII. Want of energy, and the littleness and
futility of the tasks that human industry has undertaken,
have produced much greater injury to the sciences: and
yet (to make it still worse) that very want of energy mani-
fests itself in conjunction with arrogance and disdain.

For, in the first place, one excuse, now from its repeti-
tion become familiar, is to be observed in every art, namely,
that its promoters convert the weakness of the art itself into
a calumny upon nature: and whatever it in their hands fails
to effect, they pronounce to be physically impossible. But
how can the art ever be condemned while it acts as judge in
its own cause? Even the present system of philosophy cher-
ishes in its bosom certain positions or dogmas, which (it
will be found on diligent inquiry) are calculated to produce
a full conviction that no difficult, commanding, and power-
ful operation upon nature ought to be anticipated through
the means of art; we instanced” above the alleged different

49 See Axiom 75.

68 NOVUM ORGANUM

quality of heat in the sun and fire, and composition and
mixture. Upon an accurate observation the whole ten-
dency of such positions is wilfully to circumscribe man’s
power, and to produce a despair of the means of invention
and contrivance, which would not only confound the prom-
ises of hope, but cut the very springs and sinews of indus-
try, and throw aside even the chances of experience. The
only object of such philosophers is to acquire the reputation
of perfection for their own art, and they are anxious to ob-
tain the most silly and abandoned renown, by causing a be-
lief that whatever has not yet been invented and understood
can never be so hereafter. But if any one attempt to give
himself up to things, and to discover something new; yet
he will only propose and destine for his object the investiga-
tion and discovery of some one invention, and nothing more;
as the nature of the magnet, the tides, the heavenly system,
and the like, which appear enveloped in some degree of
mystery, and have hitherto been treated with but little suc-
cess. Now it is the greatest proof of want of skill, to inves-
tigate the nature of any object in itself alone; for that same
nature, which seems concealed and hidden in some instances,
is manifest and almost palpable in others, and excites wonder
in the former, while it hardly attracts attention in the lat-
ter. Thus the nature of consistency is scarcely observed
in wood or stone, but passed over by the term solid without
any further inquiry about the repulsion of separation or the

5° The methods by which Newton carried the rule and compass to the boun-
daries of creation is a sufficient comment on the sagacity of the text. The same
cause which globulizes a bubble, has rounded the earth, and the same law which
draws a stone to its surface, keeps the moon in her orbit. It was by calculating
and ascertaining these principles upon substances entirely at his disposal that

this great philosopher was enabled to give us a key to unlock the mysteries
of the universe.—Hd.

NOVUM ORGANUM 69

.

solution of continuity. But in water-bubbles the same cir-
cumstance appears matter of delicate and ingenious research,
for they form themselves into thin pellicles, curiously shaped
into hemispheres, so as for an instant to avoid the solution
of continuity.

In general those very things which are considered as
secret are manifest and common in other objects, but will
never be clearly seen if the experiments and contemplation
of man be directed to themselves only. Yet it commonly
happens, that if, in the mechanical arts, any one bring old
discoveries to a finer polish, or more elegant height of orna-
ment, or unite and compound them, or apply them more
readily to practice, or exhibit them on a less heavy and
voluminous scale, and the like, they will pass off as new.

We cannot, therefore, wonder that no magnificent dis-
coveries, worthy of mankind, have been brought to light,
while men are satisfied and delighted with such scanty and
puerile tasks, nay, even think that they have pursued or
attained some great object in their accomplishment.

LXX XIX. Nor should we neglect to observe that nat-
ural philosophy has, in every age, met with a troublesome
and difficult opponent: I mean superstition, and a blind and
immoderate zeal for religion. For we see that, among the
Greeks, those who first disclosed the natural causes of
thunder and storms to the yet untrained ears of man were
condemned as guilty of impiety: toward the gods." Nor
did some of the old fathers of Christianity treat those much
better who showed by the most positive proofs (such as no

5! See the ‘‘Clouds’’ of Aristophanes, where Socrates is represented as chas-
ing Jupiter out of the sky, by resolving thunderstorms into aérial concussions
and whirlwinds.—£d.

70 NOVUM ORGANUM

one now disputes) that the earth is spherical, and thence
asserted that there were antipodes.”

Even in the present state of things the condition of dis-
cussions on natural philosophy is rendered more difficult
and dangerous by the summaries and methods of divines,
who, after reducing divinity into such order as they could,
and brought it into a scientific form, have proceeded to_
mingle an undue proportion of the contentious and thorny
philosophy of Aristotle with the substance of religion.

The fictions of those who have not feared to deduce and
confirm the truth of the Christian religion by the principles
and authority of philosophers, tend to the same end, though
in a different manner.“ They celebrate the union of faith
and the senses as though it were legitimate, with great pomp
and solemnity, and gratify men’s pleasing minds with a
variety, but in the meantime confound most improperly
things divine and human. Moreover, in these mixtures of
divinity and philosophy the received doctrines of the lat-
ter are alone included, and any novelty, even though it

5? Robespierre was the latest victim of this bigotry. In his younger days
he attempted to introduce Franklin’s lightning conductor into France, but was
persecuted by those whose lives he sought to protect, as one audaciously striving
to avert the designs of Providence.—Ed.

58 ‘We can hardly agree with the text. The scholastics, in building up a
system of divinity, certainly had recourse to the deductive syliogism, because
the inductive was totally inapplicable, except as a verificatory process. With
regard to the technical form in which they marshalled their arguments, which
is what our author aims at in his censure, they owed nothing at all to Aristotle,
the conducting a dispute in naked syllogistic fashion having originated entirely
with themselves. — Ed.

4 Bacon cannot be supposed to allude to those divines who have attempted
to show that the progress of physical science is confirmatory of revelation, but
only to such as have built up a system of faith out of their own refinements
on nature and revelation, as Patricius and Emanuel Swedenborg.—Jd.

NOVUM ORGANUM Ge

be an improvement, scarcely escapes banishment and ex-

~ termination.

In short, you may find all access to any species of phi-
losophy, however pure, intercepted by the ignorance of
divines. Somein their simplicity are apprehensive that
a too deep inquiry into nature may penetrate beyond the
proper bounds of decorum, transferring and absurdly apply-
ing what is said of sacred mysteries in Holy Writ against
those who pry into divine secrets, to the mysteries of nature,
which are not forbidden by any prohibition. Others with
more cunning imagine and consider, that if secondary causes
be unknown, everything may more easily be referred to the
Divine hand and wand, a matter, as they think, of the great-
est consequence to religion, but which can only really mean
that God wishes to be gratified by means of falsehood.
Others fear, from past example, lest motion and change in
philosophy should terminate in an attack upon religion.
Lastly, there are others who appear anxious lest there
should be something discovered in the investigation of
nature to overthrow, or at least shake, religion, particularly
among the unlearned. The last two apprehensions appear
to resemble animal instinct, as if men were diffident, in the
bottom of their minds and secret meditations, of the strength
of religion and the empire of faith over the senses, and there-
fore feared that some danger awaited them from an inquiry
into nature. But any one who properly considers the sub-
ject will find natural philosophy to be, after the Word of
God, the surest remedy against superstition, and the most
approved support of faith. She is, therefore, rightly be-
stowed upon religion as a most faithful attendant, for the
one exhibits the will and the other the power of God. Nor
was he wrong who observed, ‘‘Ye err, not knowing the

72 NOVUM ORGANUM

Scriptures and the power of God,’’ thus uniting in one
bond the revelation of his will and the contemplation of
his power. In the meanwhile, it 1s not wonderful that the
progress of natural philosophy has been restrained, since
religion, which has so much influence on men’s minds, has
been led and hurried to oppose her through the ignorance
of some and the imprudent zeal of others.

XC. Again, in the habits and regulations of schools,
universities, and the like assemblies, destined for the abode
of learned men and the improvement of learning, everything
is found to be opposed to the progress of the sciences; for
the lectures and exercises are so ordered, that anything out
of the common track can scarcely enter the thoughts and
contemplations of the mind. If, however, one or two have
perhaps dared to use their liberty, they can only impose
the labor on themselves, without deriving any advantage
from the association of others; and if they put up with this,
they will find their industry and spirit of no slight disad-
vantage to them in making their fortune; for the pursuits
of men in such situations are, as it were, chained down to
the writings of particular authors, and if any one dare to
dissent from them he is immediately attacked as a turbulent
and revolutionary spirit. Yet how great is the difference
between civil matters and the arts, for there is not the same
danger from new activity and new light. In civil matters
even a change for the better is suspected on account of the
commotion it occasions, for civil government is supported
by authority, unanimity, fame, and public opinion, and not
by demonstration. In the arts and sciences, on the con-
trary, every department should resound, as in mines, with
new works and advances. And this is the rational, though
not the actual view of the case, for that administration and

NOVUM ORGANUM to

government of science we have spoken of is wont too rigor-
ously to repress its growth.

XCI. And even should the odium I have alluded to be
avoided, yet it is sufficient to repress the increase of science
that such attempts and industry pass unrewarded; for the
cultivation of science and its reward belong not to the same
individual. The advancement of science is the work of
a powerful genius, the prize and reward belong to the vul-
gar or to princes, who (with a few exceptions) are scarcely
moderately well informed. Nay, such progress is not only
deprived of the rewards and beneficence of individuals, but —
even of popular praise; for it is above the reach of the
generality, and easily overwhelmed and extinguished by
the winds of common opinions. It is not wonderful, there-
fore, that little success has attended that which has been
little honored.

XCII. But by far the greatest obstacle to the advance-
ment of the sciences, and the undertaking of any new at-
tempt or department, is to be found in men’s despair and
the idea of impossibility; for men of a prudent and exact
turn of thought are altogether diffident in matters of this
nature, considering the obscurity of nature, the shortness
of life, the deception of the senses, and weakness of the
judgment. They think, therefore, that in the revolutions
of ages and of the world there are certain floods and ebbs
of the sciences, and that they grow and flourish at one time,
and wither and fall off at another, that when they have
attained a certain degree and condition they can proceed
no further.

If, therefore, any one believe or promise greater things,
they impute it to an uncurbed and immature mind, and
imagine that such efforts begin pleasantly, then become

74 NOVUM ORGANUM

laborious, and end in confusion. And since such thoughts
easily enter the minds of men of dignity and excellent judg-
ment, we must really take heed lest we should be captivated
by our affection for an excellent and most beautiful object,
and relax or diminish the severity of our judgment; and we >
must diligently examine what gleam of hope shines upon
us, and in what direction it manifests itself, so that, banish-
ing her lighter dreams, we may discuss and weigh whatever
appears of more sound importance. We must consult the
prudence of ordinary life, too, which is diffident upon prin-
ciple, and in all human matters augurs the worst. Let us,
then, speak of hope, especially as we are not vain promisers,
nor are willing to enforce or insnare men’s judgment, but
would rather lead them willingly forward. And although
we shall employ the most cogent means of enforcing hupe
when we bring them to particulars, and especially those
which are digested and arranged in our Tables of Invention
(the subject partly of the second, but principally of the
fourth part of the Instauration), which are, indeed, rather
the very object of our hopes than hope itself; yet to proceed
more leniently we must treat of the preparation of men’s
minds, of which the manifestation of hope forms no slight
part; for without it all that we have said tends rather to
produce a gloom than to encourage activity or quicken the
industry of experiment, by causing them to have a worse
and more contemptuous opinion of things as they are than
they now entertain, and to perceive and feel more thoroughly
their unfortunate condition. We must, therefore, disclose
and prefix our reasons for not thinking the hope of success
improbable, as Columbus, before his wonderful voyage over
the Atlantic, gave the reasons of his conviction that new
lands and continents might be discovered besides those

NOVUM ORGANUM 15

already known; and these reasons, though at first rejected,
were yet proved by subsequent experience, and were the
causes and beginnings of the greatest events.

XCITI. Let us begin from God, and show that our pur-
suit from its exceeding goodness clearly proceeds from him,
the author of good and father of light. Now, in all divine
works the smallest beginnings lead assuredly to some result,
and the remark in spiritual matters that ‘‘the kingdom of
God cometh without observation,’’ is also found to be true
in every great work of Divine Providence, so that every-
thing glides quietly on without confusion or noise, and the
matter is achieved before men either think or perceive that
it is commenced. Nor should we neglect to mention the
prophecy of Daniel, of the last days of the world, ‘‘Many
shall run to and fro, and knowledge shall be increased,’’ *
thus plainly hinting and suggesting that fate (which is
Providence) would cause the complete circuit of the globe
(now accomplished, or at least going forward by means of
so many distant voyages), and the increase of learning to
happen at the same epoch.

XC1V. We will next give a most potent reason for hope
deduced from the errors of the past, and the ways still un-
attempted; for well was an ill-governed state thus reproved,
‘‘That which is worst with regard to the past should appear
most consolatory for the future; for if you had done all
that your duty commanded, and your affairs proceeded no
better, you could not even hope for their improvement;
but since their present unhappy situation is not owing to
the force of circumstances, but to your own errors, you have
reason to hope that by banishing or correcting the latter

55 Daniel xii, 4.
Scrence— Vol, 22 —4

76 NOVUM ORGANUM

you can produce a great change for the better in the
former.’’ So if men had, during the many years that have
elapsed, adhered to the right way of discovering and culti-
vating the sciences without being able to advance, it would
be assuredly bold and presumptuous to imagine it possible
to improve; but if they have mistaken the way and wasted
their labor on improper objects, it follows that the difficulty
does not arise from things themselves, which are not in our
power, but from the human understanding, its practice and
application, which is susceptible of remedy and correction.
Our best plan, therefore, is to expose these errors; for in
proportion as they impeded the past, so do they afford
reason to hope for the future. And although we have
touched upon them above, yet we think it right to givea
brief, bare, and simple enumeration of them in this place.

XCV. Those who have treated of the sciences have been
either empirics or dogmatical.°* The former like ants only
heap up and use their store, the latter like spiders spin out
their own webs. The bee, a mean between both, extracts
matter from the flowers of the garden and the field, but
works and fashions it by its own efforts. The true labor
of philosophy resembles hers, for it neither relies entirely
or principally on the powers of the mind, nor yet lays up
in the memory the matter afforded by the experiments of
natural history and mechanics in its raw state, but changes
and works it in the understanding. We have good reason,

56 Bacon, in this Aphorism, appears to have entertained a fair idea of the
use of the inductive and deductive methods in scientific inquiry, though his
want of geometrical knowledge must have hindered him from accurately deter-
mining the precise functions of each, as it certainly led him in other parts of
the Organon (V. Aph. 82), to undervalue the deductive, and, as he calls it, the
dogmatic method, and to rely too much upon empiricism. —d.

NOVUM ORGANUM 77

therefore, to derive hope from a closer and purer alliance
of these faculties (the experimental and rational) than has
yet been attempted.

XCVI. Natural philosophy is not yet to be found un-
adulterated, but is impure and corrupted—by logic in the
school of Aristotle, by natural theology in that of Plato,”
by mathematics in the second school of Plato (that of Proc-
lus and others)* which ought rather to terminate natural
philosophy than to generate or create it. We may, there-
fore, hope for better results from pure and unmixed natural
philosophy.

XCVII. No one has yet been found possessed of suffi-
cient firmness and severity to resolve upon and undertake
the task of entirely abolishing common theories and notions,
and applying the mind afresh, when thus cleared and lev-
elled, to particular researches; hence our human reasoning
is a mere farrago and crude mass made up of a great deal of
credulity and accident, and the puerile notions it originally
contracted.

57 The reader may consult the note of the 23d Aphorism for the fault which
Bacon censures, and, if he wish to pursue the subject further, may read Plato’s
Timzus, where that philosopher explains his system in detail. Bacon, how-
ever, is hardly consistent in one part of his censure, for he also talks about the
spirit and appetites of inanimate substances, and that so frequently, as to pre-
clude the supposition that he is employing metaphor. — Ed.

58 Proclus flourished about the beginning of the fifth century, and was the
successor of Plotinus, Porphyry and Iamblicus, who, in the two preceding cen-
turies, had revived the doctrines of Plato, and assailed the Christian religion.
The allusion in the text must be assigned to Iamblicus, who, in the fourth cen-
tury, had republished the Pythagorean theology of numbers, and endeavored to
construct the world out of arithmetic, thinking everything could be solved by
the aid of proportions and geometry. Bacon must not be understood in the text
to censure the use but the abuse of mathematics and physical investigations, as
in the ‘De Augmentis’’ (lib. iv. c. 6), he enumerates the multiplicity of demon-
stration scientific facts admit of, from this source. — Hd.

78 NOVUM ORGANUM

But if a man of mature age, unprejudiced senses, and
clear mind, would betake himself anew to experience and
particulars, we might hope much more from such a one; in
which respect we promise ourselves the fortune of Alex-
ander the Great, and let none accuse us of vanity till they
have heard the tale, which is intended to check vanity.

For Aischines spoke thus of Alexander and his exploits:
‘‘We live not the life of mortals, but are born at such a
period that posterity will relate and declare our prodigies”’ ;
as if he considered the exploits of Alexander to be mirac-
ulous.

But in succeeding ages® Livy took a better view of the
fact, and has made some such observation as this upon
Alexander: ‘‘That he did no more than dare to despise
insignificance.’’ So in our opinion posterity will judge of
us, that we have achieved no great matters, but only set
less account upon what is considered important; for the
meantime (as we have before observed) our only hope is
in the regeneration of the sciences, by regularly raising
them on the foundation of experience and building them
anew, which I think none can venture to affirm to have
been already done or even thought of.

XCVIIT. The foundations of experience (our sole re-
source) have hitherto failed completely or have been very
weak; nor has a store and collection of particular facts,
capable of informing the mind or in any way satisfactory,
been either sought after or amassed. On the contrary,
learned, but idle and indolent, men have received some

** See Livy. lib. x. c. 17, where, in a digression on the probable effect of a
contest between Rome and Alexander the Great, he says: ‘‘Non cum Dario rem
esse dixisset: quem mulierum ac spadonum agmen trahentem inter purpuram
atque aurum, oneratum fortune apparatibus, preedam veriis quam hostem, nihil
aliud quam ausus vana contemnere, incruentus devicit.”’

NOVUM ORGANUM 79

mere reports of experience, traditions as it were of dreams,
as establishing or confirming their philosophy, and have not
hesitated to allow them the weight of legitimate evidence.
So that a system has been pursued in philosophy with re-
gard to experience resembling that of a kingdom or state
which would direct its councils and affairs according to the
gossip of city and street politicians, instead of the letters
and reports of ambassadors and messengers worthy of credit.
Nothing is rightly inquired into, or verified, noted, weighed,
or measured, in natural history; indefinite and vague obser-
vation produces fallacious and uncertain information. If
this appear strange, or our complaint somewhat too unjust
(because Aristotle himself, so distinguished a man and sup-
ported by the wealth of so great a king, has completed an
accurate history of animals, to which others with greater
diligence but less noise have made considerable additions,
and others again have composed copious histories and notices
of plants, metals, and fossils), it will arise from a want of
sufficiently attending to and comprehending our present
observations; for a natural history compiled on its own
account, and one collected for the mind’s information as
a foundation for philosophy, are two different things. They
differ in several respects, but principally in this—the former
contains only the varieties of natural species without the
experiments of mechanical arts; for as in ordinary life every
person’s disposition, and the concealed feelings of the mind
and passions are most drawn out when they are disturbed—
so the secrets of nature betray themselves more readily
when tormented by art than when left to their own course.
We must begin, therefore, to entertain hopes of natural
philosophy then only, when we have a better compilation
of natural history, its real basis and support.

80 NOVUM ORGANUM

XOCIX. Again, even in the abundance of mechanical
experiments, there is a very great scarcity of those which
best inform and assist the understanding. For the mechanic,
little solicitous about the investigation of truth, neither
directs his attention, nor applies his hand to anything that
is not of service to his business. But our hope of further
progress in the sciences will then only be well founded,
when numerous experiments shall be received and collected
into natural history, which, though of no use in themselves,
assist materially in the discovery of causes and axioms;
which experiments we have termed enlightening, to distin-
guish them from those which are profitable. They possess
this wonderful property and nature, that they never deceive
or fail you; for being used only to discover the natural
cause of some object, whatever be the result, they equally
satisfy your aim by deciding the question.

C. We must not only search for, and procure a greater
number of experiments, but also introduce a completely
different method, order, and progress of continuing and
promoting experience. For vague and arbitrary experience
is (as we have observed), mere groping in the dark, and
rather astonishes than instructs. But when experience
shall proceed regularly and uninterruptedly by a deter-
mined rule, we may entertain better hopes of the sciences.

CI. But after having collected and prepared an abun-
dance and store of natural history, and of the experience
required for the operations of the understanding or phi-
losophy, still the understanding is as incapable of acting
on such materials of itself, with the aid of memory alone,
as any person would be of retaining and achieving, by
memory, the computation of an almanac. Yet meditation
has hitherto done more for discovery than writing, and no

NOVUM ORGANUM 81

experiments have been committed to paper. We cannot,
however, approve of any mode of discovery without writing,
and when that comes into more general use, we may have
further hopes. .

CII. Besides this, there is such a multitude and host,
as it were, of particular objects, and lyimg so widely dis-
persed, as to distract and confuse the understanding; and
we can, therefore, hope for no advantage from its skirmish-
ing, and quick movements and incursions, unless we put
its forces in due order and array, by means of proper and
well arranged, and, as it were, living tables of discovery of
these matters, which are the subject of investigation, and the
mind then apply itself to the ready prepared and digested
aid which such tables afford.

CIII. When we have thus properly and regularly placed
before the eyes a collection of particulars, we must not im-
mediately proceed to the investigation and discovery of new
particulars or effects, or, at least, if we do so, must not rest
satisfied therewith. For, though we do not deny that by
transferring the experiments from one art to another (when
all the experiments of each have been collected and ar-
ranged, and have been acquired by the knowledge, and
subjected to the judgment of a single individual), many
new experiments may be discovered tending to benefit
society and mankind, by what we term literate experience;
yet comparatively insignificant results are to be expected
thence, while the more important are to be derived from
the new light of axioms, deduced by certain method and
rule from the above particulars, and pointing out and de-
fining new particulars in their turn. Our road is not a long
plain, but rises and falls, ascending to axioms, and descend-
ing to effects.

82 ts NOVUM ORGANUM

CIV. Nor can we suffer the understanding to Jump and
fly from particulars to remote and most general axioms (such
as are termed the principles of arts and things), and thus
prove and make out their intermediate axioms according to
the supposed unshaken truth of the former. This, however,
has always been done to the present time from the natural
bent of the understanding, educated too, and accustomed to
this very method, by the syllogistic mode of demonstration.
But we can then only augur well for the sciences, when the
assent shall proceed by a true scale and successive steps,
without interruption or breach, from particulars to the
lesser axioms, thence to the intermediate (rising one above
the other), and lastly, to the most general. For the lowest
axioms differ but little from bare experiment;” the highest
and most general (as they are esteemed at present), are
notional, abstract, and of no real weight. The interme-
diate are true, solid, full of life, and upon them depend
the business and fortune of mankind; beyond these are the
really general, but not abstract, axioms, which are truly
limited by the intermediate.

6° The lowest axioms are such as spring from simple experience—such as in
chemistry, that animal substances yield no fixed salt by calcination; in music,
that concords intermixed with discords make harmony, etc. Intermediate axi-
oms advance a step further, being the result of reflection, which, applied to our
experimental knowledge, deduces laws from them, such as in optics of the first
degree of generality, that the angle of incidence is equal to the angle of reflec-
tion; and in mechanics, Kepler’s three laws of motion, while his general law,
that all bodies attract each other with forces proportional to their masses, and
inversely as the squares of their distances, may be taken as one of the highest
axioms. Yet so far is this principle from being only notional or abstract, it has
presented us with a key which fits into the intricate wards *, the heavens, and
has laid bare to our gaze the principal mechanism of the univérse. But natural
philosophy in Bacon’s day had not advanced beyond intermediate axioms, and
the term notional or abstract is applied to those general axioms then current,
not founded on the solid principles of inductive inquiry, but based upon @ priors
reasoning and airy metaphysics.—LZd.

NOVUM ORGANUM 83

We must not then add wings, but rather lead and
ballast to the understanding, to prevent its jumping
or flying, which has not yet been done; but whenever
this takes place, we may entertain greater hopes of the
sciences. |

CV. In forming axioms, we must invent a different form
of induction from that hitherto in use; not only for the
proof and discovery of principles (as they are called), but
also of minor, intermediate, and, in short, every kind of
axioms. ~The induction which proceeds by simple enumer-
ation is puerile, leads to uncertain conclusions, and is ex-
posed to danger from one contradictory instance, deciding
generally from too small a number of facts, and those only
the most obvious. Buta really useful induction for the dis-
covery and demonstration of the arts and sciences, should
separate nature by proper rejections and exclusions, and
then conclude for the affirmative, after collecting a sufficient
number of negatives. Now this has not been done, nor even
attempted, except perhaps by Plato, who certainly uses this
form of induction in some measure, to sift definitions and
ideas. But much of what has never yet entered the thoughts
of man must necessarily be employed, in order to exhibit a
good and legitimate mode of induction or demonstration, so
as even to render it essential for us to bestow more pains
upon it than have hitherto been bestowed on syllogisms.
The assistance of induction is to serve us not only in the dis-
covery of axioms, but also in defining our notions. Much
indeed is to be hoped from such an induction as has been
described.

CVI. In forming our axioms from induction, we must
examine and try whether the axiom we derive be only fitted
and calculated for the particular instances from which it is

84 NOVUM ORGANUM

deduced, or whether it be more extensive and general. If.
it be the latter, we must observe, whether it confirm its own
extent and generality by giving surety, as it were, in point-
ing out new particulars, so that we may neither stop at actual
discoveries, nor with a careless grasp catch at shadows and
abstract forms, instead of substances of a determinate na-
ture: and as soon as we act thus, well authorized hope may
with reason be said to beam upon us.

CVII. Heré, too, we may again repeat what we have
said abové, concerning the extending of natural philosophy
and reducing particular sciences to that one, so as to pre-
vent any schism or dismembering of the sciences; without
which we cannot hope to advance.

CVIII. Such are the observations we would make in
order to remove despair and excite hope, by bidding fare-
well to the errors of past ages, or by their correction. Let
us examine whether there be other grounds for hope. And,
first, if many useful discoveries have occurred to mankind
by chance or opportunity, without investigation or attention
on their part, it must necessarily be acknowledged that much
more may be brought to light by investigation and attention,
if it be regular and orderly, not hasty and interrupted. For
although it may now and then happen that one falls by
chance upon something that had before escaped considerable
efforts and laborious inquiries, yet undoubtedly the reverse
is generally the case. We may, therefore, hope for further,
better, and more frequent results from man’s reason, indus-
try, method, and application, than from chance and mere
animal instinct, and the like, which have hitherto been the
sources of invention. —

CIX. We may also derive some reason for hope from the
cixcumstance of several actual inventions being of such a

NOVUM ORGANUM 85

nature, that scarcely any one could have formed a conjecture
about them previously to their discovery, but would rather
have ridiculed them as impossible. For men are wont to
guess about new subjects from those they are already ac-
quainted with, and the hasty and vitiated fancies they have
thence formed: than which there cannot be a more fallacious
mode of reasoning, because much of that which is derived
from the sources of things does not flow in their usual
channel.

If, for instance, before the discovery of cannon, one had
described its effects in the following manner: There is a new
invention by which walls and the greatest bulwarks can be
shaken and overthrown from a considerable distance; men
would have begun to contrive various means of multiplying
the force of projectiles and machines by means of weights
and wheels, and other modes of battering and projecting.
But it is improbable that any imagination or fancy would
have hit upon a fiery blast, expanding and developing itself
so suddenly and violently, because none would have seen an
instance at all resembling it, except perhaps in earthquakes
or thunder, which they would have immediately rejected as
the great operations of nature, not to be imitated by man.

So, if before the discovery of silk thread, any one had
observed, That a species of thread had been discovered, fit
for dresses and furniture, far surpassing the thread of
worsted or flax in fineness, and at the same time in tenac-
ity, beauty, and softness; men would have begun to im-
agine something about Chinese plants, or the fine hair of
some animals, or the feathers or down of birds, but certainly
would never have had an idea of its being spun by a small
worm, in so copious a manner, and renewed annually. But
if any one had ventured to suggest the silkworm, he would

¢

86 NOVUM ORGANUM

have been laughed at as if dreaming of some new manufac-
ture from spiders.

So again, if before the discovery of the compass, any one
had said, That an instrument had been invented, by which
the quarters and points of the heavens could be exactly
taken and distinguished, men would have entered into dis-
quisitions on the refinement of astronomical instruments,
and the like, from the excitement of their imaginations; but
the thought of anything being discovered, which, not being
a celestial body, but a mere mineral or metallic substance,
should yet in its motion agree with that of such bodies,
would have appeared absolutely incredible. Yet were these
facts, and the like (unknown for so many ages) not discov-
ered at last either by philosophy or reasoning, but by chance
and opportunity; and (as we have observed), they are of a
nature most heterogeneous, and remote from what was
hitherto known, so that no previous knowledge could lead
to them.

We may, therefore, well hope” that many excellent and
useful matters are yet treasured up in the bosom of nature,
bearing no relation or analogy to our actual discoveries, but
out of the common track of our imagination, and still undis-
covered, and which will doubtless be brought to light in the
course and lapse of years, as the others have been before
them; but in the way we now point out, they may rapidly
and at once be both represented and anticipated.

CX. There are, moreover, some inventions which render

6! This hope has been abundantly realized in the discovery of gravity and
the decomposition of light, mainly by the inductive method. To a better phi-
losophy we may also attribute the discovery of electricity, galvanism and their
mutual connection with each other, and magnetism, the inventions of the air-
pump, steam-engine and the chronometer.

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it probable that men may pass and hurry over the most
noble discoveries which lie immediately before them. For
however the discovery of. gunpowder, silk, the compass,
sugar, paper, or the like, may appear to depend on peculiar
properties of things and nature, printing at least involves
no contrivance which is not clear and almost obvious. But
from want of observing that although the arrangement of the
types of letters required more trouble than writing with the
hand, yet these types once arranged serve for innumerable
impressions, while manuscript only affords one copy; and
again, from want of observing that ink might be thickened so
as to stain without running (which was necessary, seeing the
letters face upward, and the impression is made from above),
this most beautiful invention (which assists so materially the
propagation of learning) remained unknown for so many
ages.

The human mind is often so awkward and ill-regulated
in the career of invention that it is at first diffident, and then
despises itself. For it appears at first incredible that any
such discovery should be made, and when it has been made,
it appears incredible that it should so long have escaped ,
men’s research, All which affords good reason for the hope
that a vast mass of inventions yet remains, which may be
deduced not only from the investigation of new modes of
operation, but also from transferring, comparing, and apply-
ing these already known, by the method of what we have
termed literate experience.

CXI. Nor should we omit another ground of hope. Let
men only consider (if they will) their infinite expenditure of
talent, time, and fortune, in matters and studies of far in-
ferior importance and value; a small portion of which ap-
plied to sound and solid learning would be sufficient. to over-

88 NOVUM ORGANUM

come every difficulty. And we have thought right to add
this observation, because we candidly own that such a
collection of natural and experimental history as we have
traced in our own mind, and as is really necessary, is a
great and as it were royal work, requiring much labor
and expense. |

CXII. In the meantime let no one be alarmed at the mul-
titude of particulars, but rather inclined to hope on that very
account. For the particular phenomena of the arts and na-
ture are in reality but as a handful, when compared with the
fictions of the imagination removed and separated from the
evidence of facts. The termination of our method is clear,
and I had almost said near at hand; the other admits of no
termination, but only of infinite confusion. For men have
hitherto dwelt but little, or rather only slightly touched
upon experience, while they have wasted much time on
theories and the fictions of the imagination. If we had but
any one who could actually answer our interrogations of
nature, the invention of all causes and sciences would be
the labor of but a few years.

CXIII. We think some ground of hope is afforded by
our own example, which is not mentioned for the sake of
boasting, but as a useful remark. Let those who distrust
their own powers observe myself, one who have among my
contemporaries been the most engaged in public business,
who am not very strong in health (which causes a great loss
of time), and am the first explorer of this course, following
the guidance of none, nor even communicating my thoughts
to a single individual; yet having once firmly entered in the
right way, and submitting the powers of my mind to things,
I have somewhat advanced (as I make bold to think) the
matter 1 now treat of. Then let others consider what may

NOVUM ORGANUM 89

be hoped from men who enjoy abundant leisure, from united
labors, and the succession of ages, after these suggestions on
our part, especially in a course which is not confined, like
theories, to individuals, but admits of the best distribution
and union of labor and effect, particularly in collecting ex-
periments. For men will then only begin to know their own
power, when each performs a separate part, instead of un-
dertaking in crowds the same work.

CXIV. Lastly, though a much more faint and uncertain
breeze of hope were to spring up from our new continent,
yet we consider it necessary to make the experiment, if we
would not show a dastard spirit. For the risk attending
want of success is not to be compared with that of neglect-
ing the attempt; the former is attended with the loss of a lit-
tle human labor, the latter with that of an immense benefit.
For these and other reasons it appears to us that there is
abundant ground to hope, and to induce not only those who
are sanguine to make experiment, but even those who are
cautious and sober to give their assent.

CXV. Such are the grounds for banishing despair,
hitherto one of the most powerful causes of the delay and
restraint to which the sciences have been subjected; in treat-
ing of which we have at the same time discussed the signs
and causes of the errors, idleness, and ignorance that have
prevailed; seeing especially that the more refined causes,
which are not open to popular judgment and observation,
may be referred to our remarks on the idols of the human
mind.

Here, too, we should close the demolishing branch of our
Instauration, which is comprised in three confutations: 1,
the confutation of natural human reason left to itself; 2, the
confutation of demonstration; 8, the confutation of theories,

90 NOVUM ORGANUM

or received systems of philosophy and doctrines. Our con-
futation has followed such a course as was open to it,
namely, the exposing of the signs of error, and the pro-
ducing evidence of the causes of it: for we could adopt no
other, differing as we do both in first principles and demon-
strations from others.

It is time for us therefore to come to the art itself, and
the rule for the interpretation of nature: there is, however,
still something which must not be passed over. For the in-
tent of this first book of aphorisms being to prepare the
mind for understanding, as well as admitting, what follows,
we must now, after having cleansed, polished, and levelled
its surface, place it in a good position, and as it were a
benevolent aspect toward our propositions; seeing that prej-
udice in new matters may be produced not only by the
strength of preconceived notions, but also by a false antici-
pation or expectation of the matter proposed. We shall
therefore endeavor to induce good and correct opinions of
what we offer, although this be only necessary for the mo-
ment, and as it were laid out at interest, until the matter
itself be well understood.

CXVI. First, then, we must desire men not to suppose
that we are ambitious of founding any philosophical sect,
like the ancient Greeks, or some moderns, as Telesius, Pa-
tricius, and Severinus.” For neither is this our intention,

® As Bacon very frequently cites these authors, a slight notice of their
labors may not be unacceptable to the reader. Bernardinus Telesius, born at
Cosenza, in 1508, combated the Aristotelian system in a work entitled ‘‘De
Rerum Natura juxta propria principia,’’ ¢.e., according to principles of his own.
The proem of the work announces his design was to show that ‘‘the construc-
tion of the world, the magnitude and nature of the bodies contained in it, are
not to be investigated by reasoning, which was done by the ancients, but are to
be apprehended by the senses, and collected from the things themselves.’’ He

NOVUM ORGANUM 91

nor do we think that peculiar abstract opinions on nature ~
and the principles of things are of much importance to men’s
fortunes, since it were easy to revive many ancient theories,
and to introduce many new ones; as, for instance, many
hypotheses with regard to the heavens can be formed, differ-
ing in themselves, and yet sufficiently according with the
phenomena. |

We bestow not our labor on such theoretical and, at the
same time, useless topics. On the contrary, our determina-
tion is that of trying, whether we can lay a firmer founda-
tion, and extend to a greater distance the boundaries of
human power and dignity. And although here and there,
upon some particular points, we hold (in our own opinion)
more true and certain, and I might even say, more advan-
tageous tenets than those in general repute (which we have
collected in the fifth part of our Instauration), yet we offer

had, however, no sooner laid down this principle than he departed from it in
practice, and pursued the deductive method he so much condemned in his prede-
cessors. His first step was an assumption of principles as arbitrary as any of
the empirical notions of antiquity; at the,outset of his book he very quietly
takes it for granted that heat is the principle of motion, cold of immobility,
matter being assumed as the corporeal substratum, in which these incorporeal
and active agents carry on their operations. Out of these abstract and ill-
defined conceptions Telesius builds up a system quite as complete, symmetrical,
and imaginative as any of the structures of antiquity.

Francis Patricius, born at Cherso, in Dalmatia, about 1529, was another
physicist who rose up against Aristotle, and announced the dawn of a new
philosophy. In 1593 appeared his ‘‘Nova de Universis Philosophia.’’ He
lays down a string of axioms, in which scholastic notions, physical discover-
ies, and theological dogmas, are strangely commingled, and erects upon them
a system which represents all the grotesque features of theological empiricism.

Severinus, born in Jutland, in 1529, published an attack on Aristotle’s nat-
ural history, but adopted fantasies which the Stagyrite ridiculed in his own day.
He was a follower of Paracelsus, a Swiss enthusiast of the fifteenth century,
who ignored the ancient doctrine of the four elements for salt, sulphur and
mercury, and allied chemistry and medicine with mysticism.—Zd,

*

92 NOVUM ORGANUM

no universal or complete theory. The time does not yet
appear to us to be arrived, and we entertain no hope of our
life being prolonged to the completion of the sixth part of
the Instauration (which is destined for philosophy discovered
by the interpretation of nature), but are content if we pro-
ceed quietly and usefully in our intermediate pursuit, scat-
tering, in the meantime, the seeds of less adulterated truth
for posterity, and, at least, commence the great work.

CXVII. And, as we pretend not to found a sect, so do
we neither offer nor promise particular effects; which may
occasion some to object to us, that since we so often speak
of effects, and consider everything in its relation to that end,
we ought also to give some earnest of producing them. Our
course and method, however (as we have often said, and
again repeat), is such as not to deduce effects from effects,
nor experiments from experiments (as the empirics do), but
in our capacity of legitimate interpreters of nature, to de-
duce causes and axioms from effects and experiments; and
new effects and experiments from those causes and axioms.

And although any one of moderate intelligence and abil-
ity will observe the indications and sketches of many noble
effects in our tables of inventions (which form the fourth
part of the Instauration), and also in the examples of par-
ticular instances cited in the second part, as well as in our
observations on history (which is the subject of the third
part); yet we candidly confess that our present natural his-
tory, whether compiled from books or our own inquiries, is
not sufficiently copious and well ascertained to satisfy, or
even assist, a proper interpretation.

If, therefore, there be any one who is more disposed and
prepared for mechanical art, and ingenious in discovering
effects, than in the mere management of experiment, we

NOVUM ORGANUM 93

allow him to employ his industry in gathering many of the
fruits of our history and tables in this way, and_ applying
them to effects, receiving them as interest till he can obtain
the principal. For our own part, having a greater object in
view, we condemn all hasty and premature rest in such pur-
suits as we would Atalanta’s apple (to use a common allu-
sion of ours); for we are not childishly ambitious of golden
fruit, but use all our efforts to make the course of art out-
strip nature, and we hasten not to reap moss or the green
blade, but wait for a ripe harvest.

CXVIII. There will be some, without doubt, who, on a
perusal of our history and tables of invention, will meet with 4
some uncertainty, or perhaps fallacy, in the experiments
themselves, and will thence perhaps imagine that our dis-
coveries are built on false foundations and principles. There
is, however, really nothing in this, since it must needs hap-
pen in beginnings.® For it is the same as if in writing or
printing one or two letters were wrongly turned or mis-
placed, which is no great inconvenience to the reader, who
can easily by his own eye correct the error; let men in the
same way conclude, that many experiments in natural his-
tory may be erroneously believed and admitted, which are
easily expunged axd rejected afterward, by the discovery of
causes and axioms. It is, however, true, that if these errors
in natural history and experiments become great, frequent,
and continued, they cannot be corrected and amended by

6§ Bacon’s apology is sound, and completely answers those German and
French critics, who have refused him a niche in the philosophical pantheon.
One German commentator, too modest to reveal his name, accuses Bacon of
ignorance of the calculus, though, in his day, Wallis had not yet stumbled upon
the laws of continuous fractions; while Count de Maistre, in a coarse attack
upon his genius, expresses his astonishment at finding Bacon unacquainted
with discoveries which were not heard of till a century after his death.—Zd,

94 NOVUM ORGANUM

any dexterity of wit or art. If then, even in our natura!
history, well examined and compiled with such diligence,
strictness, and (1 might say) reverential scruples, there be
now and then something false and erroneous in the details,
what must we say of the common natural history, which is
so negligent and careless when compared with ours? or of
systems of philosophy and the sciences, based on such loose
soil (or rather quicksand)? Let none then be alarmed by
such observations.

OXIX. Again, our history and experiments will contain
much that is light and common, mean and illiberal, too
refined and merely speculative, and, as it were, of no use,
and this perhaps may divert and alienate the attention of
mankind.

With regard to what is common; let men reflect, that
they have hitherto been used to do nothing but refer and
adapt the causes of things of rare occurrence to those of
things which more frequently happen, without any investi-
gation of the causes of the latter, taking them for granted
and admitted.

Hence, they do not inquire into the causes of gravity,
the rotation of the heavenly bodies, heat, cold, light, hard-
ness, soitness, rarity, density, liquidity, solidity, animation,
inanimation, similitude, difference, organic formation, but
taking them to be self-evident, manifest, and admitted, they
dispute and decide upon other matters of less frequent and
familiar occurrence.

But we (who know that no judgment can be formed of
that which is rare or remarkable, and much less anything
new brought to light, without a previous regular examina-
tion and discovery of the causes of that which is common,
and the causes again of those causes) are necessarily com-

NOVUM ORGANUM 95

pelled to admit the most common objects into our history.
Besides, we have observed that nothing has been so injuri-
ous to philosophy as this circumstance, namely, that famil-
iar and frequent objects do not arrest and detain men’s con-
templation, but are carelessly admitted, and their causes
never inquired after; so that information on unknown sub-
jects is not more often wanted than attention to those which
are known.

CXX. With regard to the meanness, or even the filthi-
ness of particulars, for which (as Pliny observes), an apology
is requisite, such subjects are no less worthy of admission
into natural history than the most magnificent and costly;
nor do they at all pollute natural history, for the sun enters
alike the palace and the privy, and is not thereby polluted.
We neither dedicate nor raise a capitol or pyramid to the
pride of man, but rear a holy temple in his mind, on the
model of the universe, which model therefore we imitate.
For that which is deserving of existence is deserving of
knowledge, the image of existence. Now the mean and
splendid alike exist. Nay, as the finest odors are some-
times produced from putrid matter (such as musk and
civet), so does valuable light and information emanate from
mean and sordid instances. But we have already said too
much, for such fastidious feelings are childish and effemi-
nate.

CXXI. The next point requires amore accurate consid-
eration, namely, that many parts of our history will appear
to the vulgar, or even any mind accustomed to the present
state of things, fantastically and uselessly refined. Hence,
we have in regard to this matter said from the first, and must
again repeat, that we look for experiments that shall afford
light rather than profit, imitating the divine creation, which,

96 NOVUM ORGANUM

as we have often observed, only produced light on the first
day, and assigned that whole day to its creation, without
adding any material work.

If any one, then, imagine such matters to be of no use,
he might equally suppose light to be of no use, because it
is neither solid nor material. For, in fact, the knowledge
of simple natures, when sufficiently investigated and de-
fined, resembles light, which, though of no great use in
itself, affords access to the general mysteries of effects, and
with a peculiar power comprehends and draws with it whole
bands and troops of effects, and the sources of the most val-
uable axioms. So also the elements of letters have of them-
selves separately no meaning, and are of no use, yet are they,
as it were, the original matter in the composition and prepa-
ration of speech. The seeds of substances, whose effect is
powerful, are of no use except in their growth, and the scat-
tered rays of light itself avail not unless collected.

But if speculative subtilties give offence, what must we
say of the scholastic philosophers who indulged in them to
such excess? And those subtilties were wasted on words,
or, at least, common notions (which is the same thing), not
on things or nature, and alike unproductive of benefit in
their origin and their consequences: in no way resembling
ours, which are at present useless, but in their consequences
of infinite benefit. Let men be assured that all subtile dis-
putes and discursive efforts of the mind are late and prepos-
terous, when they are introduced subsequently to the dis-
covery of axioms, and that their true, or, at any rate, chief
opportunity is, when experiment is to be weighed and axioms
to be derived from it. They otherwise catch and grasp at
nature, but never seize or detain her: and we may well
apply to nature that which has been said of opportunity

NOVUM ORGANUM 97

or fortune, that she wears a lock in front, but is bald
behind.

In short, we may reply decisively to those who despise
any part of natural history as being vulgar, mean, or sub-
tile, and useless in its origin, in the words of a poor woman
to a haughty prince,“ who had rejected her petition as un-
worthy, and beneath the dignity of his majesty: ‘‘Then
cease to reign’’; for it is quite certain that the empire of
nature can neither be obtained nor administered by one who
refuses to pay attention to such matters as being poor and
too minute.

Wa CXXII. Again, it may be objected to us as being singu-
lar and harsh, that we should with one stroke and assault,
as it were, banish all authorities and sciences, and that too
by our own efforts, without requiring the assistance and
support of any of the ancients. |

Now we are aware, that had we been ready to act other-
wise than sincerely, it was not difficult to refer our present
method to remote ages, prior to those of the Greeks (since
the sciences in all probability flourished more in their nat-
ural state, though silently, than when they were paraded
with the fifes and trumpets of the Greeks); or even (in
parts, at least) to some of the Greeks themselves, and to
derive authority and honor from thence; as men of no family
labor to raise and form nobility for themselves in some an-
cient line, by the help of genealogies. Trusting, however,
to the evidence of facts, we reject every kind of fiction and
imposture; and think it of no more consequence to our sub-
ject, whether future discoveries were known to the ancients,
and set or rose according to the vicissitudes of events and

4 Philip of Macedon.

98 NOVUM ORGANUM

lapse of ages, than it would be of importance to mankind
to know whether the new world be the island of Atlantis,”
and known to the ancients, or be now discovered for the
first time.

With regard to the universal censure we have bestowed,
it is quite clear, to any one who properly considers the
matter, that it is both more probable and more modest than
any partial one could have been. For if the errors had not
been rooted in the primary notions, some well conducted
discoveries must have corrected others that were deficient.
But since the errors were fundamental, and of such a nature,
that men may be said rather to have neglected or passed
over things, than to have formed a wrong or false judgment
of them, it is little to be wondered at, that they did not ob-
tain what they never aimed at, nor arrive at a goal which
they had not determined, nor perform a course which they
had neither entered upon nor adhered to.

With regard to our presumption, we allow that if we were
to assume a power of drawing a more perfect straight line
or circle than any one else, by superior steadiness of hand
or acuteness of eye, it would lead to a comparison of talent;
but if one merely assert that he can draw a more perfect line
or circle with a ruler or compasses, than another can by his
unassisted hand or eye, he surely cannot be said to boast
of much. Now this applies not only to our first original
attempt, but also to those who shall hereafter apply them-
selves to the pursuit. For our method of discovering the
sciences merely levels men’s wits, and leaves but little to
their superiority, since it achieves everything by the. most
certain rules and demonstrations. Whence (as we have

6 See Plato’s Timzeus.

NOVUM ORGANUM 99

often observed), our attempt is to be attributed to fortune
rather than talent, and is the offspring of time rather than
of wit. Fora certain sort of chance has no less effect upon
our thoughts than on our acts and deeds.

-CXXIII. We may, therefore, apply to ourselves the
joke of him who said, that water and wine drinkers could
not think alike, especially as it hits the matter so well.
For others, both ancients and moderns, have in the sciences
drank a crude liquor like water, either flowing of itself
from the understanding, or drawn up by logic as the wheel
draws up the bucket. But we drink and pledge others with
a liquor made of many well-ripened grapes, collected and
plucked from particular branches, squeezed in the press,
and at last clarified and fermented in a vessel. It is not,
therefore, wonderful that we should not agree with others.

CXXIV. Another objection will without doubt be made,
namely, that we have not ourselves established a correct, or
the best goal or aim of the sciences (the very defect we
blame in others). For they will say that the contemplation
of truth is more dignified and exalted than any utility or
extent of effects; but that our dwelling so long and anx-
lously on experience and matter, and the fluctuating state
of particulars, fastens the mind to earth, or rather casts it
down into an abyss of confusion and disturbance, and sep-
arates and removes it from a much more divine state, the
quiet and tranquillity of abstract wisdom. We willingly
assent to their reasoning, and are most anxious to effect the
very point they hint at and require. For we are founding
a real model of the world in the understanding, such as it
is found to be, not such as man’s reason has distorted.

% The saying of Philocrates when he differed from Demosthenes. —£d.
ScIENCE— Vol. 22 —5

100 NOVUM ORGANUM

Now this cannot be done without dissecting and anatomiz-
ing the world most diligently; but we declare it necessary
to destroy completely the vain, little and, as it were, apish
imitations of the world, which have been formed in various
systems of philosophy by men’s fancies. Let men learn
(as we have said above) the difference that exists between
the idols of the human mind and the ideas of the divine
mind. The former are mere arbitrary abstractions; the
latter the true marks of the Creator on his creatures, as
they are imprinted on, and defined in matter, by true and
exquisite touches. Truth, therefore, and utility, are here
perfectly identical, and the effects are of more value as
pledges of truth than from the benefit they confer on
men.

CXXV. Others may object that we are only doing that
which has already been done, and that the ancients followed
the same course as ourselves. They may imagine, there-
fore, that, after all this stir and exertion, we shall at last
arrive at some of those systems that prevailed among the
ancients: for that they, too, when commencing their medi-
tations, laid up a great store of instances and particulars,
and digested them under topics and titles in their common-
place books, and so worked out their systems and arts, and
then decided upon what they discovered, and related now
and then some examples to confirm and throw light upon
their doctrine; but thought it superfluous and troublesome
to publish their notes, minutes, and commonplaces, and
therefore followed the example of builders who remove
the scaffolaing and ladders when the building is finished.
Nor can we indeed believe the case to have been otherwise.
But to any one, not entirely forgetful of our previous obser-
vations, it will be easy to answer this objection or rather

NOVUM ORGANUM 101

scruple; for we allow that the ancients had a particular
form of investigation and discovery, and their writings show
it. Butit was of such a nature, that they immediately flew
from a few instances and particulars (after adding some
common notions, and a few generally received opinions
most in vogue) to the most general conclusions or the prin-
ciples of the sciences, and then by their intermediate propo-
sitions deduced their. inferior conclusions, and tried them
by the test of the immovable and settled truth of the first,
and so constructed their art. Lastly, if some new particu-
lars and instances were brought forward, which contradicted
their dogmas, they either with great subtilty reduced them
to one system, by distinctions or explanations of their own
rules, or got rid of them clumsily as exceptions, laboring
most pertinaciously in the meantime to accommodate the
causes of such as were not contradictory to their own prin-
ciples. Their natural history and their experience were
both far from being what they ought to have been, and
their flying off to generalities ruined everything.

CXXVI1. Another objection will be made against us,
that we prohibit decisions and the laying down of certain
principles, till we arrive regularly at generalities by the
intermediate steps, and thus keep the judgment in suspense
and lead to uncertainty. But our object is not uncertainty
but fitting certainty, for we derogate not from the senses
but assist them, and despise not the understanding but
direct it. It is better to know what is necessary, and not
to imagine we are fully in possession of it, than to imagine
that we are fully in possession of it, and yet in reality to
know nothing which we ought.

CXXVITI. Again, some may raise this question rather
than objection, whether we talk of perfecting natural phi-

102 NOVUM ORGANUM

1

losophy alone according to our method, or the other sciences
also, such as logic, ethics, politics. We certainly intend to
comprehend them all. And as common logic, which regu-
lates matters by syllogisms, is applied not only to natural,
but also to every other science, so our inductive method
likewise comprehends them all.* For we form a history
and tables of invention for anger, fear, shame, and the
like, and also for examples in civil life, and the mental
operations of memory, composition, division, Judgment, and
the rest, as well as for heat and cold, light, vegetation,
and the like. But since our method of interpretation, after
preparing and arranging a history, does not content itself
with examining the operations and disquisitions of the mind
like common logic, but also inspects the nature of things,
we so regulate the mind that it may be enabled to apply
itself in every respect correctly to that nature. On that
account we deliver numerous and various precepts in our
doctrine of interpretation, so that they may apply in some

67 The old error of placing the deductive syllogism in antagonism to the
inductive, as if they were not both parts of one system or refused to cohere
together. So far from there being any radical opposition between them, it
would not be difficult to show that Bacon’s method was syllogistic in his sense
of the term. For the suppressed premise of every Baconian enthymeme, viz.,
the acknowledged uniformity of the laws of nature as stated in the axiom,#
whatever has once occurred will occur again, must be assumed as the basis
of every conclusion which he draws before we can admit its legitimacy. The
opposition, therefore, of Bacon’s method could not be directed against the old
logic, for it assumed and exemplified its principles, but rather to the abusive
application which the ancients made of this science, in turning its powers to
the development of abstract principles which they imagined to be pregnant
with the solution of the latent mysteries of the universe. Bacon justly over-
threw these ideal notions, and accepted of no principle as a basis which was
not guaranteed by actual experiment and observation; and so far he laid the
foundations of a sound philosophy by turning the inductive logic to its proper
account in the interpretation of nature.

NOVUM ORGANUM 103

measure to the method of discovering the quality and con-
dition of the subject matter of investigation.

CXXVIII. Let none even doubt whether we are anxious
to destroy and demolish the philosophy, arts, and sciences,
which are now in use. On the contrary, we readily cherish
their practice, cultivation, and honor; for we by no means
interfere to prevent the prevalent system from encouraging
discussion, adorning discourses, or being employed service-
ably in the chair of the professor or the practice of common
life, and being taken, in short, by general consent as cur-
rent coin. Nay, we plainly declare, that the system we
offer will not be very suitable for such purposes, not being
easily adapted to vulgar apprehensions, except by effects
and works. ‘T'o show our sincerity in professing our regard
and friendly disposition toward the received sciences, we
can refer to the evidence of our published writings (espe-
cially our books on the Advancement of Learning). We
will not, therefore, endeavor to evince it any further by
words; but content ourselves with steadily and professedly
premising, that no great progress can be made by the
present methods in the theory or contemplation of science,
and that they cannot be made to produce any very abun-
dant effects.

CXXIX. It remains for us to say a few words on the
excellence of our proposed end. If we had done so before,
we might have appeared merely to express our wishes, but
now that we have excited hope and removed prejudices, it
will perhaps have greater weight. Had we p@formed and
completely accomplished the whole, without frequently
calling in others to assist in our labors, we should then
have refrained from saying any more, lest we should be
thought to extol our own deserts. Since, however, the

104 NOVUM ORGANUM

industry of others must be quickened, and their courage
roused and inflamed, it is right to recall some points to
their memory.

First, then, the introduction of great inventions appears
one of the most distinguished of human actions, and the
ancients so considered it; for they assigned divine honors
to the authors of inventions, but only heroic honors to those
who displayed civil merit (such as the founders of cities
and empires, legislators, the deliverers of their country
from lasting misfortunes, the quellers of tyrants, and the
like). And if any one rightly compare them, he will find
the judgment of antiquity to be correct; for the benefits
derived from inventions may extend to mankind in general,
but civil benefits to particular spots alone; the latter, more-
over, last but for a time, the former forever. Civil reforma-
tion seldom is carried on without violence and confusion,
while inventions are a blessing and a benefit without
injuring or afflicting any. ‘

Inventions are also, as it were, new creations and imita-
tions of divine works, as was expressed by the poet:

‘*Primum frugiferos foetus mortalibus zegris
Dididerant quondam przestanti nomine Athenee
Et recreaverunt vitam legesque rogarunt.”’

And it is worthy of remark in Solomon, that while he
flourished in the possession of his empire, in wealth, in the

68 This is the opening of the Sixth Book of Lucretius. Bacon probably
quoted from memory; the lines are—
**Primee frugiferos foetus mortalibus egris
Dididerunt quondam preclaro nomine Athenee
Et recreaverunt,’’ etc.

The teeming corn, that feeble mortals crave,
First, and long since, renowned Athens gave,
And cheered their life—then taught to frame their laws.

NOVUM ORGANUM 105

magnificence of his works, in his court, his household, his
fleet, the splendor of his name, and the most unbounded
admiration of mankind, he still placed his glory in none of
these, but declared that it is the glory of God to conceal
a thing, but the glory of a king to search it out.

Again, let any one but consider the immense difference
between men’s lives in the most polished countries of Ku-
rope, and in any wild and barbarous region of the new
Indies, he will think it so great, that man may be said to
be a god unto man, not only on account of mutual aid and
benefits, but from their comparative states—the result of
the arts, and not of the soil or climate.

Again, we should notice the force, effect, and conse-
quences of inventions, which are nowhere more conspicu-
ous than in those three which were unknown to the ancients;
namely, printing, gunpowder, and the compass. For these
three have changed the appearance and state of the whole
world: first in literature, then in warfare, and lastly in
navigation; and innumerable changes have been thence
derived, so that no empire, sect, or star, appears to have
exercised a greater power and influence on human affairs
than these mechanical discoveries.

It will, perhaps, be as well to distinguish three species
and degrees of ambition. First, that of men who are anx-
ious to enlarge their own power in their country, which is
a vulgar and degenerate kind; next, that of men who strive
to enlarge the power and empire of their country over man-
kind, which is more dignified but not less covetous; but if
one were to endeavor to renew and enlarge the power and
empire of mankind in general over the universe, such ambi-

6 Prov. xxv. 2.

106 NOVUM ORGANUM

tion (if it may be so termed) is both more sound and more
noble than the other two. Now the empire of man over
things is founded on the arts and sciences alone, for nature
is only to be commanded by obeying her.

Besides this, if the benefit of any particular invention has
had such an effect as to induce men to consider him greater
than a man, who has thus obliged the whole race, how
much more exalted will that discovery be, which leads to
the easy discovery of everything else! Yet (to speak the
truth) in the same manner as we are very thankful for light
which enables us to enter on our way, to practice arts, to
read, to distinguish each other, and yet sight is more excel-
lent and beautiful than the various uses of light; so is the
contemplation of things as they are, free from superstition
or imposture, error or confusion, much more dignified in
itself than all the advantage to be derived from discoveries.

Lastly, let none be alarmed at the objection of the arts
and sciences becoming depraved to malevolent or luxurious
purposes and the like, for the same can be said of every
worldly good; talent, courage, strength, beauty, riches,
light itself, and the rest. Only let mankind regain their
rights over nature, assigned to them by the gift of God,
and obtain that power, whose exercise will be governed by
right reason and true religion.

CXXX. But it is time for us to lay down the art of
interpreting nature, to which we attribute no absolute ne-
cessity (as if nothing could be done without it) nor perfec-
tion, although we think that our precepts are most useful
and correct. For we are of opinion, that if men had at
their command a proper history of nature and experience,
and would apply themselves steadily to it, and could
bind themselves to two things: 1, to lay aside received

‘

NOVUM ORGANUM 107

Opinions and notions; 2, to restrain themselves, till the
proper season, from generalization, they might, by the
proper and genuine exertion of their minds, fall into our
way of interpretation without the aid of any art. For in-
terpretation is the true and natural act of the mind, when
all obstacles are removed: certainly, however, everything
will be more ready and better fixed by our precepts.

Yet do we not affirm that no addition can be made to
them; on the contrary, considering the mind in its connec-
tion with things, and not merely relatively to its own
powers, we ought to be persuaded that the art of inven-
tion can be made to grow with the inventions themselves.

APHORISMS—BOOK II

ON. THE INTERPRETATION: OF NATURE, OR THE
REIGN OF MAN

I. To GENERATE and superinduce a new nature or new
natures, upon a given body, is the labor and aim of human
power: while to discover the form or true difference of a
given nature, or the nature’ to which such nature is owing,
or source from which it emanates (for these terms approach
nearest to an explanation of our meaning), is the labor and
discovery of human knowledge; and subordinate to these
primary labors are two others of a secondary nature and
inferior stamp. Under the first must be ranked the trans-
formation of concrete bodies from one to another, which is
possible within certain limits; under the second, the dis-
covery, in every species of generation and motion, of the
latent and uninterrupted process from the manifest efficient
and manifest subject matter up to the given form: and a
like discovery of the latent conformation of bodies which
are at rest instead of being in motion.

II. The unhappy state of man’s actual knowledge is
manifested even by the common assertions of the vulgar.
It is rightly laid down that true knowledge is that which
is deduced from causes. The division of four causes also
is not amiss: matter, form, the efficient, and end or final

1 To tt hw elvan, or hv ovdia of Aristotle.—See lib. iii. Metap.
(108)

wf

NOVUM ORGANUM 109

cause.? Of these, however, the latter is so far from being
beneficial, that it even corrupts the sciences, except in the
intercourse of man with man. The discovery of form is
considered desperate. As for the efficient cause and matter
(according to the present system of inquiry and the received
opinions concerning them, by which they are placed remote
from, and without any latent process toward form), they are
but desultory and superficial, and of scarcely any avail to
real and active knowledge. Nor are we unmindful of our
having pointed out and corrected above the error of the
human mind, in assigning the first qualities of essence to
forms.’ For although nothing exists in nature except ind1-
vidual bodies,* exhibiting clear individual effects according
to particular laws, yet in each branch of learning, that very
law, its investigation, discovery, and development, are the
foundation both of theory and practice. This law, therefore,
and its parallel in each science, is what we understand by
the term form,® adopting that word because it has grown
into common use, and is of familiar occurrence. |

2 These divisions are from Aristotle’s Metaphysics, where they are termed,
1, vAn } 7d VroKeimevov. 2, TAT HY elvar. 3, OOev H apxyH THs KLvHTEwWs. 4, Td OD EveKev
—kat To ayadov.

8 See Aphorism li. and second paragraph of Aphorisin Ixv. in the first book.

4 Bacon means, that although there exist in nature only individualities, yet
a certain number of these may have common properties, and be controlled by
the same laws. Now, these homogeneous qualities which distinguish them
from other individuals, lead us to class them under one expression, and some-
times under a single term. Yet these classes are only pure conceptions in
Bacon’s opinion, and cannot be taken for distinct substances. He evidently
here aims a blow at the Realists, who concluded that the essence which united
individualities in a class was the only real and immutable existence in nature,
inasmuch as it entered into their ideas of individual substances as a distinct and
essential property, and continued in the mind as the mold, type or pattern of
the class, while its individual forms were undergoing perpetual renovation and
decay.—Lad.

5 Bacon’s definition is obscure. All the idea we have of a law of nature

110 NOVUM ORGANUM

III. He who has learned the cause of a particular nature
(such as whiteness or heat), in particular subjects only, has
acquired but an imperfect knowledge: as he who can induce
a certain effect upon particular substances only, among those
which are susceptible of it, has acquired but an imperfect
power. But he who has only learned the efficient and
material cause (which causes are variable and mere vehicles

consists in invariable sequence between certain classes of phenomena; but this
cannot be the complete sense attached by Bacon to the term form, as he em-
ploys it in the fourth aphorism as convertible with the nature of any object;
and again, in the first aphorism, as the natura naturans, or general law or con-
dition in any substance or quality—natura naturata—which is whatever its
form is, or that particular combination of forces which impresses a certain
nature upon matter subject to its influence. Thus, in the Newtonian sense,
the form of whiteness would be that combination of the seven primitive rays
of light which give rise to that color. In combination with this word, and
affording a still further insight into its meaning, we have the phrases, latens
processus ad formam, et latens schematismus corporum. Now, the latens sche-
matismus signifies the internal texture, structure, or configuration of bodies, or
the result of the respective situation of all the parts of a body; while the latens
processus ad formam points out the gradation of movements which takes place
among the molecula of bodies when they either conserve or change their figure.
Hence we may consider the form of any quality in body as something converti-
ble with that quality, z.e., when it exists the quality is present, and vice versd.
In this sense, the form of a thing differs only from its efficient cause in being
permanent, whereas we apply cause to that which exists in order of time. The
latens processus and latens schematismus are subordinate to form, as concrete
exemplifications of its essence. The former is the secret and invisible process
by which change is effected, and involves the principle since called the law of
continuity. Thus, the succession of events between the application of the
match to the expulsion of the bullet is an instance of latent progress which we
can now trace with some degree of accuracy. It also more directly refers to
the operation by which one form or condition of being is induced upon another.
For example, when the surface of iron becomes rusty, or when water is con-
verted into steam, some change has taken place, or latent process from one
form to another. Mechanics afford many exemplifications of the first latent
process we have denoted, and chemistry of the second. The latens schematis-
mus is that visible structure of bodies on which so many of their properties
depend. When we inquire into the constitution of crystals, and into the inter-
nal structure of plants, we are examining into their latent schematism.—Ed.

NOVUM ORGANUM 111

conveying form to particular substances) may perhaps arrive
at some new discoveries in matters of a similar nature, and
prepared for the purpose, but does not stir the limits of
things which are much more deeply rooted; while he who
_ is acquainted with forms, comprehends the unity of nature
in substances apparently most distinct from each other. He
can disclose and bring forward, therefore (though it has
never yet been done), things which neither the vicissitudes
of nature, nor the industry of experiment, nor chance itself,
would ever have brought about, and which would forever
have escaped man’s thoughts; from the discovery of forms,
therefore, results genuine theory and free practice.

IV. Although there is a most intimate connection, and
almost an identity between the ways of human power
and human knowledge, yet, on account of the pernicious
and inveterate habit of dwelling upon abstractions, it is
by far the safest method to commence and build up the
sciences from those foundations which bear a relation to
the practical division, and to let them mark out and hmit
the theoretical. We must consider, therefore, what pre-
cepts, or what direction or guide, a person would most
desire, in order to generate and superinduce any nature
upon a given body: and this not in abstruse, but in the
plainest language.

For instance, if a person should wish to superinduce the
yellow color of gold upon silver, or an additional weight
(observing always the laws of matter) or transparency on an
opaque stone, or tenacity in glass, or vegetation on a sub-
stance which is not vegetable, we must (I say) consider what
species of precept or guide this person would prefer. And,
first, he will doubtless be anxious to be shown some method
that will neither fail in effect, nor deceive him in the trial of

112 NOVUM ORGANUM

it; secondly, he will be anxious that the prescribed method
should not restrict him and tie him down to peculiar means,
and certain particular methods of acting; for he will, per-
haps, be at loss, and without the power or opportunity of
collecting and procuring such means. Nowif there be other
means and methods (besides those prescribed) of creating
such a nature, they will perhaps be of such a kind as are in
his power, yet by the confined limits of the precept he will
be deprived of reaping any advantage from them; thirdly,
he will be anxious to be shown something not so difficult
as the required effect itself, but approaching more nearly to
practice.

We will lay this down, therefore, as the genuine and per-
fect rule of practice, that it should be certain, free and pre-
paratory, or having relation to practice. And this is the
same thing as the discovery of a true form; for the form of
any nature is such, that when it is assigned the particular
nature infallibly follows. It is, therefore, always present
when that nature is present,,and universally attests such
presence, and is inherent in the whole of it. The same
form is of such a character, that if it be removed the par-
ticular nature infallibly vanishes. It is, therefore, absent,
whenever that nature is absent, and perpetually testifies such
absence, and exists in no other nature. Lastly, the true
form is such, that it deduces the particular nature from some
source of essence existing in many subjects, and more known
(as they term it) to nature, than the form itself. Such, then,
is our determination and rule with regard to a genuine and
perfect theoretical axiom, that a nature be found convertible
with a given nature, and yet such as to limit the more
known nature, in the manner of a real genus. But these
two rules, the practical and theoretical, are in fact the

NOVUM ORGANUM 113

same, and that which is most useful in practice is most
correct in theory.

V. But the rule or axiom for the transformation of bodies
is of two kinds. The first regards the body as an aggregate
or combination of simple natures. Thus, in gold are united
the following circumstances: it is yellow, heavy, of a cer-
tain weight, malleable and ductile to a certain extent; it is
not volatile, loses part of its substance by fire, melts in a
particular manner, is separated and dissolved by particular
methods, and so of the other natures observable in gold.
An axiom, therefore, of this kind deduces the subject from
the forms of simple natures; for he who has acquired the
forms and methods of superinducing yellowness, weight,
ductility, stability, deliquescence, solution, and the like,
and their degrees and modes, will consider and contrive how
to unite them in any body, so as to transform’ it into gold.
And this method of operating belongs to primary action; for
it is the same thing to produce one or many simple natures,
except that man is more confined and restricted in his opera-
tions, if many be required, on account of the difficulty of
uniting many natures together. It must, however, be ob-
served, that this method of operating (which considers na-
tures as simple though in a concrete body) sets out from
what is constant, eternal, and universal in nature, and opens
such broad paths to human power, as the thoughts of man
can in the present state of things scarcely comprehend or
figure to itself.

The second kind of axiom (which depends on the dis-
covery of the latent process) does not proceed by simple na-

6 By the recent discoveries in electric magnetism, copper wires, or, indeed,
wires of any metal, may be transformed into magnets; the magnetic law, or
form, having been to that extent discovered.

114 NOVUM ORGANUM

tures, but by concrete bodies, as they are found in nature
and in its usual course. For instance, suppose the inquiry
to be, from what beginnings, in what manner, and by what
process gold or any metal or stone is generated from the
original menstruum, or its elements, up to the perfect min-
eral: or, in like manner, by what process plants are gener-
ated, from the first concretion of juices in the earth, or from
seeds, up to the perfect plant, with the whole successive
motion, and varied and uninterrupted efforts of nature; and
the same inquiry be made as to a regularly deduced system
of the generation of animals from coition to birth, and so on
of other bodies.

Nor is this species of inquiry confined to the mere gen-
eration of bodies, but it is applicable to other changes and
labors of nature. For instance, where an inquiry is made
into the whole series and continued operation of the nutri-
tive process, from the first reception of the food to its com-
plete assimilation to the recipient;’ or into the voluntary
motion of animals, from the first impression of the imagina-
tion, and the continuous effects of the spirits, up to the
bending and motion of the joints; or into the free motion of
the tongue and lips, and other accessories which give utter-
ance to articulate sounds. Tor all these investigations relate
to concrete or associated natures artificially brought together,
and take into consideration certain particular and special
habits of nature, and not those fundamental and general
laws which constitute forms. It must, however, be plainly
owned, that this method appears more prompt and easy, and
of greater promise than the primary one.

’ Haller has pursued this investigation in his ‘‘Physiology,’’ and has left
~sgors little else to do than repeat his discoveries. —Zd.

NOVUM ORGANUM 113

In like manner the operative branch, which answers to
this contemplative branch, extends and advances its opera-
tion from that which is usually observed in nature, to other
subjects immediately connected with it, or not very remote
from such immediate connection. But the higher and radi-
cal operations upon nature depend entirely on the primary
axioms. Besides, even where man has not the means of
acting, but only of acquiring knowledge, as in astronomy

(for man cannot act upon, change, or transform the heavenly
| bodies), the investigation of facts or truth, as well as the
knowledge of causes and coincidences, must be referred to.
those primary and universal axioms that regard simple na-
tures; such as the nature of spontaneous rotation, attraction,
or the magnetic force, and many others which are more com-
mon than the heavenly bodies themselves. For let no one
hope to determine the question whether the earth or heaven
revolve in the diurnal motion, unless he have first compre-
hended the nature of spontaneous rotation. |

VI. But the latent process of which we speak, is far
from being obvious to men’s minds, beset as they now are.
For we mean not the measures, symptoms, or degrees of any
process which can be exhibited in the bodies themselves,
but simply a continued process, which, for the most part,
escapes the observation of the senses.

For instance, in all generations and transformations of
bodies, we must inquire, what is in the act of being lost and
escaping, what remains, what is being added, what is being
diluted, what is being contracted, what is being united, what
is being separated, what is continuous, what is broken off,
what is urging forward, what impedes, what predominates,
what is subservient, and many other circumstances.

Nor are these inquiries again to be made in the mere

116 NOVUM ORGANUM

generation and transformation of bodies only, but in all
other alterations and fluctuations we must in like manner
inquire; what precedes, what succeeds, what is quick, what
is slow, what produces and what governs motion, and the
like. All which matters are unknown and unattempted by
the sciences, in their present heavy and inactive state. For,
since every natural act is brought about by the smallest
efforts,® or at least such as are too small to strike our senses,
let no one hope that he will be able to direct or change na-
ture unless he have properly comprehended and observed
these efforts.

VII. In like manner, the investigation and discovery of
the latent conformation in bodies is no less new, than the
discovery of the latent process and form. For we as yet are
doubtless only admitted to the antechamber of nature, and
do not prepare an entrance into her presence-room. But
nobody can endue a given body with a new nature, or trans-
form it successfully and appropriately into a new body,
without possessing a complete knowledge of the body so to
be changed or transformed. For he will run into vain, or,
at least, into difficult and perverse methods, ill adapted to
the nature of the body upon which he operates. <A clear
path, therefore, toward this object also must be thrown
open, and well supported.

Labor is well and usefully bestowed upon the anatomy
-of organized bodies, such as those of men and animals,
which appears to be a subtile matter, and a useful examina-
tion of nature. The species of anatomy, however, is that of
first sight, open to the senses, and takes place only in organ-

® Bacon here first seems pregnant with the important development of the |
higher calculus, which, in the hands of Newton and Descartes, was to effect
as great a revolution in philosophy as his method.—£d.

NOVUM ORGANUM - LET

ized bodies. It is obvious, and of ready access, when com-
pared with the real anatomy of latent conformation in bodies
which are considered similar, particularly in specific objects
and their parts; as those of iron, stone, and the similar parts
of plants and animals, as the root, the leaf, the flower, the
flesh, the blood, and bones, etc. Yet human industry has
not completely neglected this species of anatomy; for we
have an instance of it in the separation of similar bodies by
distillation, and other solutions, which shows the. dissimi-
larity of the compound by the union of the homogeneous
parts. These methods are useful, and of importance to our
inquiry, although attended generally with fallacy: for many
natures are assigned and attributed to the separate bodies,
as if they had previously existed in the compound, which,
in reality, are recently bestowed and superinduced by fire
and heat, and the other modes of separation. Besides, it is,
after all, but a small part of the labor of discovering the real
conformation in the compound, which is so subtile and nice,
that it is rather confused and lost by the operation of the
fire, than discovered and brought to light.

A separation and solution of bodies, therefore, is to be
effected, not by fire indeed, but rather by reasoning and true
induction, with the assistance of experiment, and by a com-
parison with other bodies, and a reduction to those simple

natures and their forms which meet, and are combined in |

the compound; and we must assuredly pass from Vulcan to
Minerva, if we wish to bring to light the real texture and
conformation of bodies, upon which every occult and (as it
is sometimes called) specific property and virtue of things
depends, and whence also every rule of powerful change and
transformation is deduced.

For instance, we must examine what spirit is in every

118 NOVUM ORGANUM

body,® what tangible essence; whether that spirit is copious
and exuberant, or meagre and scarce, fine or coarse, aeri-
form or igniform, active or sluggish, weak or robust, pro-
eressive or retrograde, abrupt or continuous, agreeing with
external and surrounding objects, or differing from them,
etc. In like manner must we treat tangible essence (which
admits of as many distinctions as the spirit), and its hairs,
fibres, and varied texture. Again, the situation of the spirit
in the corporeal mass, its pores, passages, veins, and cells,
and the rudiments or first essays of the organic body, are
subject to the same examination. In these, however, as in
our former inquiries, and therefore in the whole investiga-
tion of latent conformation, the only genuine and clear light
which completely dispels all darkness and subtile difficul-
ties, is admitted by means of the primary axioms.

- VII. This method will not bring us to atoms,’® which
takes for granted the vacuum, and immutability of matter
(neither of which hypotheses is correct), but to the real par-
ticles such as we discover them to be. Nor is there any

® By spirit, Bacon here plainly implies material fluid too fine to be grasped
by the unassisted sense, which rather operates than reasons. We sometimes
adopt the same mode of expression, as in the words spirits of nitre, spirits of
wine. Some such agency has been assumed by nearly all the modern physi-
cists, a few of whom, along with Bacon, would leave us to gather from their
expressions, that they believe such bodies endowed with the sentient powers
of perception. As another specimen of his sentiment on this subject, we may
refer to a paragraph on the decomposition of compounds, in his essay on death,
beginning—‘‘The spirit which exists in all living bodies, keeps all the parts in
due subjection; when it escapes, the body decomposes, or the similar parts
unite, ’’—d.

10 The theory of the Epicureans and others. The atoms are supposed to be
invisible, unalterable particles, endued with all the properties of the given body,
and forming that body by their union. They must be separated, of course,
which either takes a vacuum for granted, or introduces a tertium quid into the
composition of the body.

NOVUM ORGANUM 119

ground for alarm at this refinement as if it were inexpli-
cable, for, on the contrary, the more inquiry is directed to
simple natures, the more will everything be placed in a
plain and perspicuous light, since we transfer our attention
from the complicated to the simple, from the incommensur-
able to the commensurable, from surds to rational quantities,
from the indefinite and vague to the definite and certain; as
when we arrive at the elements of letters, and the simple
tones of concords. ‘The investigation of nature is best con-
ducted when mathematics are applied to physics. Again,
let none be alarmed at vast numbers and fractions, for in
calculation it is as easy to set down or to reflect upon a thou-
sand asa unit, or the thousandth part of an integer as an
integer itself.

IX." From the two kinds of axioms above specified,
arise the two divisions of philosophy and the sciences, and
we will use the commonly adopted terms which approach
the nearest to our meaning, in our own sense. Let the in-
vestigation of forms, which (in reasoning at least, and after
their own laws), are eternal and immutable, constitute meta-
physics,’? and let the investigation of the efficient cause of

11 Compare the three following aphorisms with the last three chapters of the
third book of the ‘‘De Augmentis Scientiarum.”’

12 Bacon gives this unfortunate term its proper signification; eTa, in com-
position, with the Greeks signifying change or mutation. Most of our readers,
no doubt, are aware that the obtrusion of this word into technical philosophy
was purely capricious, and is of no older date than the publication of Aristotle’s
works by Andronicus of Rhodes, one of the learned men into whose hands the
manuscripts of that philosopher fell, after they were brought by Sylla from
Athens to Rome. To fourteen books in these MSS. with no distinguishing
title, Andronicus is said to have prefixed the words 74 Meta ta pvorka, to denote
the place which they ought to hold either in the order of Aristotle’s arrange-
ment, or in that of study. These books treat first of those subjects which are
common to matter and mind; secondly, of things separate from matter, ¢.e. of
God, and of the subordinate spirits, which were supposed by the Peripatetics

Pi

t tro”

120 NOVUM ORGANUM —

matter, latent process, and latent conformation (which all
relate merely to the ordinary course of nature, and not to
her fundamental and eternal laws), constitute physics.
Parallel to these, let there be two practical divisions; to
physics that of mechanics, and to metaphysics that of magic,
in the purest sense of the term, as applied to its ample
means, and its command over nature.

X. The object of our philosophy being thus laid down,
we proceed to precepts, in the most clear and regular order.
The signs for the interpretation of nature comprehend two
divisions; the first regards the eliciting or creating of axioms
from experiment, the second the deducing or deriving of
new experiments from axioms. The first admits of three
subdivisions into ministrations. 1. To the senses. 2. To
the memory. 38. To the mind or reason.

For we must first’ prepare as a foundation for the whole,
acomplete and accurate natural and experimental history.
We must not imagine or invent, but discover the acts and
properties of nature.

But natural and experimental history is so varied and
diffuse, that it confounds and distracts the understanding
unless it be fixed and exhibited in due order. We must,
therefore, form tables and co-ordinations of instances, upon

to watch over particular portions of the universe. The followers of Aristotle
accepted the whimsical title of Andronicus, and in their usual manner allowed
a word to unite things into one science which were plainly heterogeneous,
Their error was adopted by the Peripatetics of the Christian Church. The
schoolmen added to the notion of ontology, the science of the mind, or pneu-
matology, and as that genus of being has since become extinct with the schools,
metaphysics thus in modern parlance comes to be synonymous with psychology.
It were to be wished that Bacon’s definition of the term had been accepted, and
mental science delivered from one of the greatest monstrosities in its nomencla-
ture, yet Bacon whimsically enough in his De Augmentis includes mathematics
in metaphysics. —Ed,

NOVUM ORGANUM 121

such a plan, and in such order that the understanding may
be enabled to act upon them.

Even when this is done, the understanding, left to itself
and to its own operation, is incompetent and unfit to con-
struct its axioms without direction and support. Our third =
ministration, therefore, must be true and legitimate induc-
tion, the very key of interpretation. We must begin, how-
ever, at the end, and go back again to the others.

XI. The investigation of forms proceeds thus: a nature
being given, we must first present to the understanding all
the known instances which agree in the same nature, al-
though the subject matter be considerably diversified. And
this collection must be made as a mere history, and without
any premature reflection, or too great degree of refinement.
For instance; take the investigation of the form of heat.

Instances agreeing in the Form of Heat

1. The rays of the sun, particularly in summer, and at
noon.

2. The same reflected and condensed, as between moun-
tains, or along walls, and particularly in burning mirrors.

5. Ignited meteors.

4. Burning lightning.

5. Hruptions of flames from the cavities of mountains, etc.

6. Flame of every kind.

7. Ignited solids.

8. Natural warm baths.

9. Warm or heated liquids.

10. Warm vapors and smoke; and the air itself, which
admits a most powerful and violent heat if confined, as in
reverberating furnaces.

122 NOVUM ORGANUM

11. Damp hot weather, arising from the constitution of
the air, without any reference to the time of the year.

12. Confined and subterraneous air in some caverns, par-
ticularly in winter.

13. All shaggy substances, as wool, the skins of animals,
and the plumage of birds, contain some heat.

14. All bodies, both solid and liquid, dense and rare (as
the air itself), placed near fire for any time.

15. Sparks arising from the violent percussion of flint
and steel.

16. All bodies rubbed violently, as stone, wood, cloth,
etc., so that rudders, and axles of wheels, sometimes catch
fire, and the West Indians obtain fire by attrition.

17. Green and moist vegetable matter confined and
rubbed together, as roses, peas in baskets; so hay, if it
be damp when stacked, often catches fire.

18. Quicklme sprinkled with water.

19. Iron, when first dissolved by acids in a glass, and
without any application to fire; the same of tin, but not so
intensely.

20. Animals, particularly internally; although the heat
is not perceivable by the touch in insects, on account of
their small size.

21. Horse dung, and the like excrement from other ani-
mals, when fresh.

22. Strong oil of sulphur and of vitriol exhibit the opera-
tion of heat in burning linen.

23. As does the oil of marjoram, and like substances, in
burning the bony substance of the teeth. |

24. Strong and well rectified spirits of wine exhibit the
same effects; so that white of eggs when thrown into it
grows hard and white, almost in the same manner as

NOVUM ORGANUM 128

when boiled, and bread becomes burned and brown as if
toasted.

25. Aromatic substances and warm plants, as the dracun-
culus [arum], old nasturtium, etc., which, though they be
not warm to the touch (whether whole or pulverized), yet
are discovered by the tongue and palate to be warm and
almost burning when slightly masticated.

26. Strong vinegar and all acids, on any part of the body
not clothed with the epidermis, as the eye, tongue, or any
wounded part, or where the skin is removed, excite a pain
differing but little from that produced by heat.

27. Even a severe and intense cold produces a sensation

of burning.”
‘‘Nec Borese penetrabile frigus adurit.’’

28. Other instances.

Weare wont to call this a table of existence and presence. _

XII. We must next present to the understanding in-
stances which do not admit of the given nature, for form (as
we have observed) ought no less to be absent where the
given nature is absent, than to be present where it is pres-
ent. If, however, we were to examine every instance, our
labor would be infinite.

Negatives, therefore, must be classed under the affirma-
tives, and the want of the given nature must be inquired
into more particularly in‘objects which have a very close
connection with those others in which it is present and mani-
fest. And this we are wont to term a table of deviation or
of absence in proximity.

18 “Ne tenues pluviz, rapidive potentia solis
Acrior, aut Borez penetrabile frigus adurat.”’
—Virg. Georg. i. 92, 93.

SCIENCE— Vol, 22 —6

124 NOVUM ORGANUM

Proximate Instances wanting the Nature of Heat

The rays of the moon, stars, and comets, are not found
to be warm to the touch, nay, the severest cold has been
observed to take place at the full of the moon. Yet the
larger fixed stars are supposed to increase and render more
intense the heat of the sun, as he approaches them, when \
the sun is in the sign of the Lion, for instance, and in the —
dog-days.*

The rays of the sun in what is called the middle region
of the air give no heat, to account for which the commonly
assigned reason is satisfactory; namely, that that region is
neither sufficiently near to the body of the sun whence the
rays emanate, nor to the earth whence they are reflected.
And the fact is manifested by snow being perpetual on the
tops of mountains, unless extremely lofty. But it is ob-
served, on the other hand, by some, that at the Peak of
Teneriffe, and also among the Andes of Peru, the tops of
the mountains are free from snow, which only lies in the
lower part as you ascend. Besides, the air on the summit
of these mountains is found to be by no means cold, but
only thin and sharp; so much so, that in the Andes it pricks
and hurts the eyes from its extreme sharpness, and even ex-
cites the orifice of the stomach and produces vomiting. The
ancients also observed, that the rarity of the air on the sum.- -

44 This notion, which he repeats again, and particularizes in the 18th aph.
of this book, is borrowed from the ancients, and we need not say is as wise
as their other astronomical conjectures. The sun also approaches stars quite
as large in other quarters of the zodiac, when it looks down upon the earth
through the murky clouds of winter. When that luminary is in Leo, the heat
of the earth is certainly greater than at any other period, but this arises from
the accumulation of heat after the solstice, for the same reason that the maxi-
mum heat of the day is at two o’clock instead of noon.—Ld.

NOVUM ORGANUM . 125

mit of Olympus was such, that those who ascended it were
obliged to carry sponges moistened with vinegar and water,
and to apply them now and then to their nostrils, as the air
was not dense enough for their respiration; on the summit
of which mountain it is also related, there reigned so great
a serenity and calm, free from rain, snow, or wind, that the
letters traced upon the ashes of the sacrifices on the altar of
Jupiter, by the fingers of those who had offered them, would
remain undisturbed till the next year. Those even, who at
this day go to the top of the Peak of Teneriffe, walk by
night and not in the daytime, and are advised and pressed
by their guides, as soon as the sun rises, to make haste in
their descent, on account of the danger (apparently arising
from the rarity of the atmosphere), lest their ee
should be relaxed and suffocated.”

The reflection of the solar rays in the polar regions is
found to be weak and inefficient in producing heat, so that
the Dutch, who wintered in Nova Zembla, and expected
that their vessel would be freed about the beginning of
July from the obstruction of the mass of ice which had
blocked it up, were disappointed and obliged to embark in
their boat. Hence the direct rays of the sun appear to have
but little power even on the plain, and when reflected,
unless they are multipled and condensed, which takes place
when the sun tends more to the perpendicular; for, then,
the incidence of the rays occurs at more acute angles, so
that the reflected rays are nearer to each other, while, on
the contrary, when the sun is in a very oblique position,

1 Bouguer, employed by Louis XIV. in philosophical researches, ascended
the Andes to discover the globular form of the earth, and published an account
of his passage, which verifies the statement of Bacon.

126 NOVUM ORGANUM

the angles of incidence are very obtuse, and the reflected
rays at a greater distance. In the meantime it must be
observed, that there may be many operations of the solar
rays, relating, too, to the nature of heat, which are not pro-
portioned to our touch, so that, with regard to us, they do
not tend to produce warmth, but, with regard to some
other bodies, have their due effect in producing it.

Let the following experiment be made. Take a lens the
reverse of a burning-glass, and place it between the hand
and the solar rays, and observe whether it diminish the heat
of the sun as a burning-glass increases it. Jor it is clear,
with regard to the visual rays, that in proportion as the lens
is made of unequal thickness in the middle and at its sides,
the images appear either more diffused or contracted. It
should be seen, therefore, if the same be true with regard
to heat.

Let the experiment be well tried, whether the lunar rays
can be received and collected by the strongest and best
burning-glasses, so as to produce even the least degree of
heat.’ But if that degree be, perhaps, so subtile and weak,
as not to be perceived or ascertained by the touch, we must
have recourse to those glasses which indicate the warm or
cold state of the atmosphere, and let the lunar rays fall

16 Montanari asserts in his book against the astrologers that he had satisfied
himself by numerous and oft-repeated experiments, that the lunar rays gathered
to a focus produced a sensible degree of heat. Muschenbréck, however, adopts
the opposite opinion, and asserts that himself, De la Hire, Villet, and Tschirn-
hausen had tried with that view the strongest burning-glasses in vain. (Opera
de Igne.) De la Lande makes a similar confession in his Astronomy (vol. ii. vii.
§ 1413). Bouguer, whom we have just quoted, demonstrated that the light of
the moon was 300,000 degrees less than that of the sun; it would consequently
be necesary to invent a glass with an absorbing power 300,000 degrees greater
than those ordinarily in use, to try the experiment Bacon speaks of.—Zd.

E NOVUM ORGANUM 127

through the burning-glass on the top of this thermometer,
and then notice if the water be depressed by the heat.”

Let the burning-glass be tried on warm objects which
emit no luminous rays, as heated but not ignited iron or
stone, or hot water, or the like; and observe whether the
heat become increased and condensed, as happens with the
solar rays. |

Let it be tried on common flame.

The effect of comets (if we can reckon them among
meteors’*) in augmenting the heat of the season is not found
to be constant or clear, although droughts have generally
been observed to follow them. However, luminous lines,
and pillars, and openings, and the like, appear more often
in winter than in summer, and especially with the most in-
tense cold but joined with drought. Lightning, and corus-
cations, and thunder, however, rarely happen in winter, and

17 In this thermometer, mercury was not dilated by heat or contracted by
cold, as the one now in use, but a mass of air employed instead, which filled
the cavity of the bulb. This being placed in an inverted position to ours, that
is to say, with the bulb uppermost, pressed down the liquor when the air be-
came dilated by heat, as ours press it upward; and when the heat diminished,
the liqour rose to occupy the place vacated by the air, as the one now in use
descends. It consequently was liable to be affected by a change in the tempera-
ture, as by the weight of air, and could afford only a rude standard of accuracy
in scientific investigations. This thermometer was not Bacon’s own contriv-
ance, as is commonly supposed, but that of Drebbel.—£d.

18 Ta Lande is indignant that the Chaldeans should have more correct notions
of the nature of comets than the modern physicists, and charges Bacon with
entertaining the idea that they were the mere effects of vapor and heat. This
passage, with two others more positive, in the ‘‘De Aug.’’ (cap. xl.) and the
*“‘Descript. Globi Intellect.’’ (cap. vi.) certainly afford ground for the assertion;
but if Bacon erred, he erred with Galileo, and with the foremost spirits of the
times. It is true that Pythagoras and Seneca had asserted their belief in the
solidity of these bodies, but the wide dominion which Aristotle subsequently
exercised, threw their opinions into the shade, and made the opposite doctrine
everywhere paramount.—d.

128 NOVUM ORGANUM

generally at the time of the greatest heats. The appearances
we term falling stars are generally supposed to consist of
some shining and inflamed viscous substance, rather than
of violently hot matter; but let this be further investigated.

Some coruscations emit light without burning, but are
never accompanied by thunder.

Kructations and eruptions of flame are to be found in
cold climates as well as in hot, as in Iceland and Greenland;
just as the trees of cold countries are sometimes inflammable
and more pitchy and resinous than in warm, as the fir, pine,
and the like. But the position and nature of the soil, where
such eruptions are wont to happen, is not yet sufficiently
investigated to enable us to subjoin a negative instance to
the affirmative.

All flame is constantly more or less warm, and this in-
stance is not altogether negative; yet it is said that the ignis
fatuus (as it is called), and which sometimes is driven against
walls, has but little heat; perhaps it resembles that of spirits
of wine, which is mild and gentle. That flame, however,
appears yet milder, which in some well authenticated and
serious histories is said to have appeared round the head
and hair of boys and virgins, and instead of burning their
hair, merely to have played about it. And it is most cer-
tain that a sort of flash, without any evident heat, has some-
times been seen about a horse when sweating at night, or in
damp weather. It is also a well known fact,’ and it was
almost considered as a miracle, that a few years since a
girl’s apron sparkled when a little shaken or rubbed, which
was, perhaps, occasioned by the alum or salts with which

19 Was it a silk apron which exhibited electric sparks? Silk was then
scarce.

NOVUM ORGANUM 129

the apron was imbued, and which, after having been stuck
together and incrusted rather strongly, were broken by the
friction. It is well known that all sugar, whether candied
or plain, if it be hard, will sparkle when broken or scraped
in the dark. In like manner sea and salt water is sometimes
found to shine at night when struck violently by the oar.
The foam of the sea when agitated by tempests also sparkles
at night, and the Spaniards call this appearance the sea’s
lungs. It has not been sufficiently ascertained what degree
of heat attends the flame which the ancient sailors called
Castor and Pollux, and the moderns call St. Ermus’ fire.

Every ignited body that is red-hot is always warm, al-
though without flame, nor is any negative instance sub-
joined to this affirmative. Rotten wood, however, ap-
proaches nearly to it, for it shines at night, and yet is not
found to be warm; and the putrefying scales of fish which
shine in the same manner are not warm to the touch, nor
‘the body of the glowworn, or of the fly called Lucciola.”

The situation and nature of the soil of natural warm
baths has not been sufficiently investigated, and therefore
a negative instance is not subjoined.

To the instances of warm liquids we may subjoin the
negative one of the peculiar nature of liquids in general;
for no tangible liquid is known that is at once warm in its
nature and constantly continues warm; but their heat is
only superinduced as an adventitious nature for a limited
time, so that those which are extremely warm in their power
and effect, as spirits of wine, chemical aromatic oils, the
oils of vitriol and sulphur, and the like, and which speedily
burn, are yet cold at first to the touch, and the water of
natural baths, poured into any vessel and separated from

20 The Italian fire-fly.

130 NOVUM ORGANUM

its source, cools down like water heated by the fire. It is,
however, true that oily substances are rather less cold to
the touch than those that are aqueous, oil for instance than
water, silk than linen; but this belongs to the table of de-
grees of cold.

In lke manner we may subjoin a negative instance to
that of warm vapor, derived from the nature of vapor itself,
as far as we are acquainted with it. For exhalations from
oily substances, though easily inflammable, are yet never
warm unless recently exhaled from some warm substance.

The same may be said of the instance of air; for we
never perceive that air is warm unless confined or pressed,
or manifestly heated by the sun, by fire, or some other
warm body.

A negative instance is exhibited in weather by its cold-
ness with an east or north wind, beyond what the season
would lead us to expect, just as the contrary takes place
with the south or west winds. An inclination to rain (espe-
cially in winter) attends warm weather, and to frost cold
weather.

A negative instance as to air confined in caverns may be
observed in summer. Indeed, we should make a more dili-
gent inquiry into the nature of confined air. For in the first
place the qualities of air in its own nature with regard to
heat and cold may reasonably be the subject of doubt; for
air evidently derives its heat from the effects of celestial
bodies, and possibly its cold from the exhalation of the
earth, and in the mid region of air (as it is termed) from
cold vapors and snow, so that no judgment can be formed
of the nature of air by that which is out of doors and ex-
posed, but a more correct one might be derived from con-
fined air. It is necessary, however, that the air should be

NOVUM ORGANUM 131

inclosed in a vessel of such materials as would not imbue
it with heat or cold of themselves, nor easily admit the
influence of the external atmosphere. The experiment
should be made, therefore, with an earthen jar, covered
with folds of leather to protect it from the external air, and
the air should be kept three or four days in this vessel
well closed. On opening the jar, the degree of heat may
be ascertained either by the hand or a graduated glass tube.

There is a similar doubt as to whether the warmth of
wool, skins, feathers, and the like, is devived from a slight
inherent heat, since they are animal excretions, or from
théir being of a certain fat and oily nature that accords
with heat, or merely from the confinement and separation
of air which we spoke of in the preceding paragraph;”' for
all air appears to possess a certain degree of warmth when
separated from the external atmosphere. Let an experiment
be made, therefore, with fibrous substances of linen, and
not of wool, feathers, or silk, which are animal excretions.
For it is to be observed that all powders (where air is mani-
festly inclosed) are less cold than the substances when
whole, just as we imagine froth (which contains air) to be
less cold than the liquid itself.

We have here no exactly negative instance, for we are
not acquainted with any body tangible or spirituous which
does not admit of heat when exposed to the fire. There is,
however, this difference, that some admit it more rapidly,
as air, oil, and water, others more slowly, as stone and
metals.” This, however, belongs to the table of degrees.

*! This last is found to be the real reason, air not being a good conductor,
and therefore not allowing the escape of heat. The confined air is disengaged
when these substances are placed under an exhausted receiver.

22 This is erroneous. Air, in fact, is one of the worst, and metals are the
best conductors of heat.

182 NOVUM ORGANUM

No negative is here subjoined, except the remark that
sparks are not kindled by flint and steel, or any other hard
substance, unless some small particles of the stone or metal
are struck off, and that the air never forms them by friction,
as is commonly supposed; besides, the sparks from the
weight of the ignited substance have a tendency to descend
rather than to rise, and when extinguished become a sort
of dark ash.

We are of opinion that here again there is no negative;
for we are not acquainted with any tangible body which does
not become decidedly warm by friction, so that the ancients
feigned that the gods had no other means or power of creat-
ing heat than the friction of air, by rapid and violent rota-
tion. On this point, however, further inquiry must be
made, whether bodies projected by machines (as balls from
cannon) do not derive some degree of heat from meeting the
air, which renders them somewhat warm when they fall. —
The air in motion rather cools than heats, as in the winds,
the bellows, or breath when the mouth is contracted. The
motion, however, in such instances is not sufficiently rapid
to excite heat, and is applied to a body of air, and not to
its component parts, so that it is not surprising that heat
should not be generated.

We must make a more diligent inquiry into this in-
stance; for herbs and green and moist vegetables appear
to possess a latent heat, so small, however, as not to be
perceived by the touch in single specimens, but when they
are united and confined, so that their spirit cannot exhale
into the air, and they rather warm each other, their heat
is at once manifested, and even flame occasionally in suit-
able substances.

Here, too, we must make a more diligent inquiry; for

NOVUM ORGANUM 133

quicklime, when sprinkled with water, appears to conceive
heat, either from its being collected into one point (as we
observed of herbs when confined), or from the irritation and
exasperation of the fiery spirit by water, which occasions
a conflict and struggle. The true reason will more readily
be shown if oil be used instead of water, for oil will equally
tend to collect the confined spirit, but not to irritate. The.
experiment may be made more general, both by using the
ashes and calcined products of different bodies and by pour-
ing different liquids upon them.

A negative instance may be subjoined of other metals
which are more soft and soluble; for leaf gold dissolved by
aqua regia, or lead by aqua fortis, are not warm to the touch
while dissolving, no more is quicksilver (as far as | remem-
ber), but silver excites a slight heat, and so does copper,
and tin yet more plainly, and most of all iron and steel,
which excite not only a powerful heat, but a violent bub-
bling. The heat, therefore, appears to be occasioned by
the struggle which takes place when these strong dissol-
vents penetrate, dig into, and tear asunder the parts of
those substances, while the substances themselves resist.
When, however, the substances yield more easily, scarcely
any heat is excited.

There is no negative instance with regard to the heat of
animals, except in insects (as has been observed), owing to
their small size; for in fishes, as compared with land ani-
mals, a lower degree rather than a deprivation of heat is
observable. In plants and vegetables, both as to their
exudations and pith when freshly exposed, there is no sen-
sible degree of heat. But in animals there is a great differ-
ence in the degree, both in particular parts (for the heat
varies near the heart, the brain, and the extremities) and in

134 NOVUM ORGANUM

the circumstances in which they are placed, such as violent
exercise and fevers.

Here, again, there is scarcely a negative instance. I
might add that the excrements of animals, even when they
are no longer fresh, possess evidently some effective heat, as
is shown by their enriching the soil.

Such liquids (whether oily or watery) as are intensely
acrid exhibit the effects of heat, by the separation and burn-
ing of bodies after some little action upon them, yet they
are not at first warm to the touch, but they act according to
their affinity and the pores of the substances to which they
are applied; for aqua regia dissolves gold but not silver—
on the contrary, aqua fortis dissolves silver but not gold;
neither of them dissolves glass, and so of the rest.

Let spirits of wine be tried on wood, or butter, wax, or
pitch, to see if this will melt them at all by their heat; for
the twenty-fourth: instance shows that they possess proper-
ties resembling those of heat in causing incrustation. Let
an experiment also be made with a graduated glass or calen-
dar,” concave at the top, by pouring well-rectified spirits of
wine into the cavity, and covering -it up in order that they
may the better retain their heat, then observe whether their
heat make the water descend.

Spices and acrid herbs are sensibly warm to the palate,
and still more so when taken internally; one should see,
therefore, on what other substances they exhibit the effects
of heat. Now, sailors tell us that when large quantities of
spices are suddenly opened, after having been shut up for
some time, there is some danger of fever and inflammation
to those who stir them or take them out. An experiment

#3 See No. 28 in the table of the degrees of heat.

NOVUM ORGANUM 1385

might, therefore, be made whether such spices and herbs,
when produced, will, like smoke, dry fish and meat hung
up over them. |

There is an acrid effect and a degree of penetration in
cold liquids, such as vinegar and oil of vitriol, as well as
in warm, such as oil of marjoram and the lke; they have,
therefore, an equal effect in causing animated substances to
smart, and separating and consuming inanimate parts.
There is not any negative instance as to this, nor does there
exist any animal pain unaccompanied by the sensation of
heat.

There are many effects common to cold and heat, how-
ever different in their process; for snowballs appear to burn
boys’ hands after a little time, and cold no less than fire
preserves bodies from putrefaction—besides both heat and
cold contract bodies. But it is better to refer these instances
and the like to the investigation of cold.

XIII. In the third place we must exhibit to the under-
standing the instances in which that nature, which is the
object of our inquiries, is present in a greater or less degree,
either by comparing its increase and decrease in the same
object, or its degree in different objects; for since the form
of a thing is its very essence, and the thing only differs
from its form as the apparent from the actual object, or the
exterior from the interior, or that which is considered with
relation to man from that which is considered with relation
to the universe; it necessarily follows that no nature can be
considered a real form which does not uniformly diminish
and increase with the given nature. We are wont to call
this our Table of Degrees, or Comparative Instances.

136 NOVUM ORGANUM

Table of the Degrees or Comparative Instances of Heat

We will first speak of those bodies which exhibit no
degree of heat sensible to the touch, but appear rather to
possess a potential heat, or disposition and preparation for
it. We will then go on to others, which are actually warm
to the touch, and observe the strength and degree of it.

1. There is no known solid or tangible body which is by
its own nature originally warm; for neither stone, metal,
sulphur, fossils, wood, water, nor dead animal carcasses are
found warm. The warm springs in baths appear to be
heated accidentally, by flame, subterraneous fire (such as
is thrown up by Etna and many other mountains), or by the
contact of certain bodies, as heat is exhibited in the dissolu-
tion of iron and tin. The degree of heat, therefore, in
inanimate objects is not sensible to our touch; but they
differ in their degrees of cold, for wood and metal are not
equally cold.* This, however, belongs to the Table of
Degrees of Cold.

2. But with regard to potential heat and predisposition
to flame, we find many inanimate substances wonderfully
adapted to it, as sulphur, naphtha, and saltpetre.

8. Bodies which have previously acquired heat, as horse
dung from the animal, or hme, and perhaps ashes and soot
from fire, retain some latent portion of it. Hence distilla-
_tions and separations of substances are effected by burying

*4 Bacon here mistakes sensation confined to ourselves for an internal prop-
erty of distinct substances. Metals are denser than wood, and our bodies con-
sequently coming into contact with more particles of matter when we touch
them, lose a greater quantity of heat than in the case of lighter sub-
stances. —Hd.

NOVUM ORGANUM 137

them in horse dung, and heat is excited in lime by sprink-
ling it with water (as has been before observed).

4. In the vegetable world we know of no plant, nor part
of any plant (as the exudations or pith) that is warm to
man’s touch. Yet (as we have before observed) green
weeds grow warm when confined, and some vegetables are
warm and others cold to our internal touch, 2.e., the palate
and stomach, or even after a while to our external skin (as
is shown in plasters and ointments).

5. We know of nothing in the various parts of animals,
when dead or detached from the rest, that is warm to the
touch; for horse dung itself does not retain its heat, unless
it be confined and buried. All dung, however, appears to
possess a potential heat, as in manuring fields; so also dead
bodies are endued with this latent and potential heat to such
a degree, that in cemeteries where people are interred daily
the earth acquires a secret heat, which consumes any
recently deposited body much sooner than pure earth; and
they tell you that the people of the Hast are acquainted with
a fine soft cloth, made of the down of birds, which can melt
butter wrapped gently up in it by its own warmth.

6. Manures, such as every kind of dung, chalk, sea-sand,
salt and the like, have some disposition toward heat. ,

7. All putrefaction exhibits some slight degree of heat,
though not enough to be perceptible by the touch; for
neither the substances which by putrefaction are converted
into animalcule,” as flesh and cheese, nor rotten wood
which shines in the dark, are warm to the touch. The heat,

% This was the ancient opinion, but the moderns incline to the belief that
these insects are produced by generation or fecundity from seeds deposited by
their iribes in bodies on the verge of putrefaction.—£d.

138 NOVUM ORGANUM

however, of putrid substances displays itself occasionally in
a disgusting and strong scent.

8. The first degree of heat, therefore, in substances
which are warm to the human touch appears to be that of
animals, and this admits of a great variety of degrees, for
the lowest (as in insects) is scarcely perceptible, the highest
scarcely equals that of the sun’s rays in warm climates and
weather, and is not so acute as to be insufferable to the
hand. Itis said, however, of Constantius, and some others
of a very dry constitution and habit of body, that when
attacked with violent fevers, they became so warm as to
appear almost to burn the hand applied to them.

9. Animals become more warm by motion and exercise,
wine and feasting, venery, burning fevers, and grief.

10. In the paroxysm of intermittent fevers the patients
are at first seized with cold and shivering, but soon after-
ward become more heated than at first—in burning and
pestilential fevers they are hot from the beginning.

11. Let further inquiry be made into the comparative
heat of different animals, as fishes, quadrupeds, serpents,
birds, and also of the different species, as the lion, the kite,
or man; for, according to the vulgar opinion, fishes are the
least warm internally, and birds the most, particularly
doves, hawks, and ostriches.

12. Let further inquiry be made as to the comparative
heat in different parts and limbs of the same animal; for
milk, blood, seed, and eggs are moderately warm, and less
hot than the outward flesh of the animal when in motion or
agitated. The degree of heat of the brain, stomach, heart,
and the rest, has not yet been equally well investigated.

13. All animals are externally cold in winter and cold
weather, but are thought to be internally warmer.

NOVUM ORGANUM 139

14. The heat of the heavenly bodies, even in the warmest
climates and seasons, never reaches such a pitch as to light
or burn the driest wood or straw, or even tinder without
the aid of burning-glasses. It can, however, raise vapor
from moist substances.

15. Astronomers tell us that some stars are hotter than

others. Mars is considered the warmest after the Sun, then ~

Jupiter, then Venus. The Moon and, above all, Saturn,
are considered to be cold. Among the fixed stars Sirius
is thought the warmest, then Cor Leonis or Regulus, then
the lesser Dog-star.

16. The sun gives out more heat as it approaches toward
the perpendicular or zenith, which may be supposed to be
the case with the other planets, according to their degree
of heat; for instance, that Jupiter gives out more heat when
situated beneath Cancer or Leo than when he is beneath
Capricorn and Aquarius.

17. It is to be supposed that the sun and other planets
give more heat in perigee, from their approximation to the
earth, than when in apogee. But if in any country the sun
should be both in its perigee and nearer to the perpendicular
at the same time, it must necessarily give out more heat than
in a country where it is also in perigee, but situated more
obliquely; so that the comparative altitude of the planets
should be observed, and their. approach to or declination
from the perpendicular in different countries.

18. The sun and other planets are thought also to give
out more heat in proportion as they are nearer to the larger
fixed stars, as when the sun is in Leo he is nearer Cor
Leonis, Cauda Leonis, Spica Virginis, Sirius, and the lesser
Dog-star, than when he is in Cancer, where, however, he
approaches nearer to the perpendicular. It is probable,

140 NOVUM ORGANUM

also, that the quarters of the heavens produce a greater heat
(though not perceptibly), in proportion as they are adorned
with a greater number of stars, particularly those of the
first magnitude.

19. On the whole, the heat of the heavenly bodies is
augmented in three ways: 1. The approach to the perpen-
dicular; 2. Proximity or their perigee; 38. The conjunction
or union of stars.

20. There is a very considerable difference between the
degree of heat in animals, and even in the rays of the heav-
enly bodies (as they reach us), and the heat of the most gen-
tle flame, and even of all ignited substances, nay, liquids,
or the air itself when unusually heated by fire. For the
flame of spirit of wine, though diffused and uncollected, is
yet able to set straw, linen, or paper on fire, which animal
heat, or that of the sun, will never accomplish without a
burning-glass.

21. There are, however, many degrees of strength and
weakness in flame and ignited bodies: but no diligent in-
quiry has been made in this respect, and we must, therefore,
pass it hastily over. Of all flames, that of spirits of wine
appears to be the most gentle, except perhaps the ignis
fatuus, or the flashes from the perspiration of animals.
After this we should be inclined to place the flame of light
and porous vegetables, such as straw, reeds, and dried
leaves; from which the flame of hair or feathers differs but
little. Then, perhaps, comes the flame of wood, particu-
larly that which contains but little rosin or pitch; that of
small wood, however (such as is usually tied up in fagots),
is milder than that of the trunks or roots of trees. This can
be easily tried in iron furnaces, where a fire of fagots or
branches of trees is of little service. Next follows the flame

NOVUM ORGANUM 141

of oil, tallow, wax, and the like oily and fat substances,
which are not very violent. But a most powerful heat is
found in pitch and rosin, and a still greater in sulphur, cam-
phor, naphtha, saltpetre, and salts (after they have dis-
charged their crude matter), and in their compounds; as in
gunpowder, Greek fire (vulgarly called wild fire), and its
varieties, which possess such a stubborn heat as scarcely to
be extinguished by water.

22. We consider that the flame which results from some
imperfect metals is very strong and active; but on all these
points further inquiry should be made.

23. The flame of vivid lightning appears to exceed all
the above, so as sometimes to have melted even wrought
iron into drops, which the other flames cannot accomplish.

24. In ignited bodies there are different degrees of heat,
concerning which, also, a diligent inquiry has not been
made. We consider the faintest heat to be that of tinder,
touchwood, and dry rope match, such as is used for dis-
charging cannon. Next follows that of ignited charcoal or
cinders, and even bricks, and the like; but the most vio-
lent is that of ignited metals, as iron, copper, and the like.
Further inquiry, however, must be made into this also.

25. Some ignited bodies are found to be much warmer
than some flames; for instance, red hot iron is much warmer,
and burns more than the flame of spirits of wine.

26. Some bodies even not ignited, but only heated by
the fire, as boiling water, and the air confined in reverbera-
tories, Surpass in heat many flames and ignited substances.

27. Motion increases heat,” as is shown in the bellows

6 The correct measure of the activity of flame may be obtained by multiply-
ing its natural force into the square of its velocity. On this account the flame

142 ; NOVUM ORGANUM

and the blowpipe; for the harder metals are not dissolved
or melted by steady quiet fire, without the aid of the blow-
pipe.

28. Let an experiment be made with burning-glasses; in
which respect I have observed, that if a glass be placed at
the distance of ten inches, for instance, from the combustible
object, it does not kindle or burn it so readily, as if the glass
be placed at the distance of five inches (for instance), and be
then gradually and slowly withdrawn to the distance of ten
inches. The cone and focus of the rays, however, are the
same, but the mere motion increases the effect of the heat.

29. Conflagrations, which take place with a high wind,
are thought to make greater way against than with the wind,
because when the wind slackens, the flame recoils more
rapidly than it advances when the wind is favorable.

30. Flame does not burst out or arise unless it have
some hollow space to move and exert itself in, except in the
exploding flame of gunpowder, and the like, where the com-
pression and confinement of the flame increase its fury.

31. The anvil becomes so hot by the hammer, that if it
were a thin plate it might probably grow red, like ignited
iron by repeated strokes. Let the experiment be tried.

82. But in ignited bodies that are porous, so as to leave
room for the fire to move itself, if its motion be prevented
by strong compression, the fire is immediately extinguished;
thus it is with tinder, or the burning snuff of a candle or
lamp, or even hot charcoal or cinders; for when they are
squeezed by snuffers, or the foot, and the like, the effect of
the fire instantly ceases.

of vivid lightning mentioned in No. 23 contains so much vigor, its velocity
being greater than that arising from other heat.—Ed.

NOVUM ORGANUM 1438

88. The approach toward a hot body increases heat in
proportion to the approximation; a similar effect to that of
light, for the nearer any object is placed toward the light,
the more visible it becomes.

34. The?’ union of different heats increases heat, unless
the substances be mixed; for a large and small fire in the
same spot tend mutually to increase each other’s heat, but
lukewarm water poured into boiling water cools it.

85. The continued neighborhood of a warm body in-
creases heat. For the heat, which perpetually passes and
emanates from it, being mixed with that which preceded it,
multiplies the whole. A fire, for instance, does not warm
a room in half an hour as much as the same fire would in
an hour. This does not apply to light, for a lamp or candle
placed in a spot gives no more light by remaining there,
than it did at first.

36. The irritation of surrounding cold increases heat, as
may be seen in fires during a sharp frost. We think that
this is owing not merely to the confinement and compression
of the heat (which forms a sort of union), but also by the
exasperation of it, as when the air ora stick are violently
compressed or bent, they recoil, not only to the point they
first occupied, but still further back. Let an accurate ex-
periment, therefore, be made with a stick, or something of
the kind, put into the flame, in order to see whether it be
not sooner burned at the sides than in the middle of it.”

*7 The fires supply fresh heat, the water has only a certain quantity of heat,
which being diffused over a fresh supply of cooler water, must be on the whole
lowered.

*8 If condensation were the cause of the greater heat, Bacon concludes the
centre of the flame would be the hotter part, and vice versd. The fact is,
neither of the causes assigned by Bacon is the true one; for the fire burns

144 _NOVUM ORGANUM

37. There are many degrees in the susceptibility of heat.
And, first, it must be observed how much a low gentle heat
changes and partially warms even the bodies least suscep-
tible of it. for even the heat of the hand imparts a little
warmth to a ball of lead or other metal held a short time in
it; so easily is heat transmitted and excited, without any
apparent change in the body.

88. Of all bodies that we are acquainted with, air admits
and loses heat the most readily, which is admirably seen in
weather-glasses, whose construction is as follows: Take a
glass with a hollow belly, and a thin and long neck; turn
it upside down, and place it with its mouth downward into
another glass vessel containing water; the end of the tube -
touching the bottom of the vessel, and the tube itself lean-
ing a little on the edge, so as to be fixed upright. In order
to do this more readily, let a little wax be applied to the
edge, not, however, so as to block up the orifice, lest, by
preventing the air from escaping, the motion, which we
shall presently speak of, and which is very gentle and deli-
cate, should be impeded.

Before the first glass be inserted in the other, its upper
part (the belly) should be warmed at the fire. Then upon
placing i* as we have described, the air (which was dilated
by the heat), after a sufficient time has been allowed for it
to lose the additional temperature, will restore and contract
itself to the same dimensions as that of the external or com-
mon atmosphere at the moment of immersion, and the water
will be attracted upward in the tube to a proportionate ex-
tent. A long narrow slip of paper should be attached to

more quickly only because the draught of air is more rapid, the cold dense
air pressing rapidly into the heated room and toward the chimney.-—£d.

NOVUM ORGANUM 145

the tube, divided into as many degrees as you please. You
will then perceive, as the weather grows warmer or colder,
that the air contracts itself into a narrower space in cold
weather and dilates in the warm, which will be exhibited
by the rising of the water as the air contracts itself, and its
depression as the air dilates. The sensibility of the air with
regard to heat or cold is so delicate and exquisite, that it far
exceeds the human touch, so that a ray of sunshine, the heat
of the breath, and much more, that of the hand placed on
the top of the tube, immediately causes an evident depres-
sion of the water. We think, however, that the spirit of
animals possesses a much more delicate susceptibility of
heat and cold, only that it is impeded and blunted by the
grossness of their bodies.

39. After air, we consider those bodies to be most sen-
sible of heat, which have been recently changed and con-
tracted by cold, as snow and ice; for they begin to be dis-
solved and melt with the first mild weather. Next, perhaps,
follows quicksilver; then greasy substances, as oil, butter,
and the like; then wood; then water; lastly, stones and
metals, which do not easily grow hot, particularly toward
their centre.” When heated, however, they retain their
temperature for a very long time; so that a brick or stone,
or hot iron, plunged in a basin of cold water, and kept there

*® Bacon appears to have confounded combustibility and fusibility with sus-
ceptibility of heat; for though the metals will certainly neither dissolve as soon
as ice or butter, nor be consumed as soon as wood, that only shows that differ-
ent degrees of heat are required to produce similar effects on different bodies;
but metals much more readily acquire and transmit the same degree of heat
than any of the above substances. The rapid transmission renders them gen-
erally cold to the touch. The convenience of fixing wooden handles to vessels
containing hot water illustrates these observations.

146 NOVUM ORGANUM

for a quarter of an hour or thereabout, retains such a heat
as not to admit of being touched.

40. The less massive the body is, the more readily it
grows warm at the approach of a heated body, which shows
that heat with us is somewhat averse to a tangible mass.”

41. Heat with regard to the human senses and touch is
various and relative, so that lukewarm water appears hot if
the hand be cold, and cold if the hand be hot.

XIV. Any one may readily see how poor we are in his-
tory, since in the above tables, besides occasionally insert-
ing traditions and report instead of approved history. and
authentic instances (always, however, adding some note if
their credit or authority be doubtful), we are often forced to
subjoin, ‘‘Let the experiment be tried—Let further inquiry
be made.”’

XV. We are wont to term the office and use of these
three tables the presenting a review of instances to the
understanding; and when this has been done, induction
itself is to be brought into action. For on an individual
review of all the instances a nature is to be found, such as
always to be present and absent with the given nature, to
increase and decrease with it, and, as we have said, to form
amore common limit of the nature. If the mind attempt
this affirmatively from the first (which it always will when
left to itself), there will spring up phantoms, mere theories
and ill-defined notions, with axioms requiring daily correc-
tion. These will, doubtless, be better or worse, according
to the power and strength of the understanding which
creates them. But it is only for God (the bestower and

80 Another singular error, the truth being, that solid bodies are the best
conductors; but of course where heat is diffused over a large mass, it is less
in each part, than if that part alone absorbed the whole quantum of heat.—Zd.

NOVUM ORGANUM 147

creator of forms), and perhaps for angels and intelligences,
at once to recognize forms affirmatively at the first glance of
contemplation: man, at lest, is unable to do so, and is only
allowed to proceed first by negatives, and then to conclude
with affirmatives, after every species of exclusion.

XVI. We must, therefore, effect a complete solution and
separation of nature; not by fire, but by the mind, that
divine fire. The first work of legitimate induction, in the’
discovery of forms, is rejection, or the exclusive instances
of individual natures, which are not found in some one in-
stance where the given nature is present, or are found in
any one instance where it is absent, or are found to increase
in any one instance where the given nature decreases, or the
reverse. After an exclusion correctly effected, an affirma-
tive form will remain as the residuum, solid, true, and well
defined, while all volatile opinions go off in smoke. This
is readily said; but we must arrive at it by a circuitous
route. We shall perhaps, however, omit nothing that can
facilitate our progress. |

XVII. The first and almost perpetual precaution and
warning which we consider necessary is this; that none
should suppose from the great part assigned by us to
forms, that we mean such forms as the meditations and
thoughts of men have hitherto been accustomed to. In
the first place, we do not at present mean the concrete
forms, which (as we have observed) are in the common
course of things compounded of simple natures, as those of
a lion, an eagle, a rose, gold, or the like. The moment for
discussing these will arrive when we come to treat of the
latent process and latent conformation, and the discovery of
them as they exist in what are called substances, or concrete

natures.
ScrENCE— Vol. 22 —7

,

148 NOVUM ORGANUM

Nor again, would we be thought to mean (even when
treating of simple natures) any abstract forms or ideas,
either undefined or badly defined in matter. For when we
speak of forms, we mean nothing else than those laws and
regulations of simple action which arrange and constitute
any simple nature, such as heat, light, weight, in every
species of matter, and in a susceptible subject. The form
of heat or form of hght, therefore, means no more than the
law of heat or the law of light. Nor do we ever abstract or
withdraw ourselves from things, and the operative branch
of philosophy. When, therefore, we say (for instance) in
our investigation of the form of heat, Reject rarity, or, Rar-
ity is not of the form of heat, it is the same as if we were to
say, Man can superinduce heat on a dense body, or the re-
verse, Man can abstract or ward off heat from a rare body.

But if our forms appear to any one to be somewhat ab-
stracted, from their mingling and uniting heterogeneous
objects (the heat, for instance, of the heavenly bodies ap-
pears to be very different from that of fire; the fixed red of
the rose and the like, from that which is apparent in the
rainbow, or the radiation of opal or the diamond;*’ death
by drowning, from that by burning, the sword, apoplexy,
or consumption; and yet they all agree in the common na-
tures of heat, redness, and death), let him be assured that
his understanding is inthralled by habit, by general appear-
ances and hypotheses. For it is most certain that, however
heterogeneous and distinct, they agree in the form or law
which regulates heat, redness, or death; and that human
power cannot be emancipated and freed from the common

31 This general Jaw or form has been well illustrated by Newton’s discovery
of the decomposition of colors.

NOVUM ORGANUM 149

course of nature, and expanded and exalted to new efficients
and new modes of operation, except by the revelation and
invention of forms of this nature. But after this * union of
nature, which is the principal point, we will afterward, in
its proper place, treat of the divisions and ramifications of
nature, whether ordinary or internal and more real.

XVII1. We must now offer an example of the exclusion
or rejection of natures found by the tables of review, not to
be of the form of heat; first premising that not only each
table is sufficient for the rejection of any nature, but even
each single instance contained in them. For it is clear from
what has been said that every contradictory instance de-
stroys a hypothesis as to the form. Still, however, for
the sake of clearness, and in order to show more plainly the
use of the tables, we redouble or repeat the exclusive.

An Hxample of the Haclusive Table, or of the Rejection
of Natures from the Form of Heat

1. On account of the sun’s rays, reject elementary (or
terrestrial) nature.

2. On account of common fire, and particularly subter-
ranean fires (which are the most remote and secluded from
the rays of the heavenly bodies), reject celestial nature.

3. On account of the heat acquired by every description
of substances (as minerals, vegetables, the external parts of
animals, water, oil, air, etc.) by mere approximation to the
fire or any warm body, reject all variety and delicate texture
of bodies. |

82 J.e,, the common link or form which connects the various kinds of natures,
such as the different hot or red natures enumerated above.—See Aphorism iii,
part 2.

150 NOVUM ORGANUM

4. On account of iron and ignited metals, which warm
other bodies, and yet neither lose their weight nor sub-
stance, reject the imparting or mixing of the substance of
the heating body.

5. On account of boiling water and air, and also those
metals and other solid bodies which are heated, but not to
ignition, or red heat, reject flame or hght.

6. On account of the rays of the moon and other heav-
enly bodies (except the sun), again reject flame or light.

7. On account of the comparison between red-hot iron
and the flame of spirits of wine (for the iron is more hot and
less bright, while the flame of spirits of wine is more bright
and less hot), again reject flame and light.

8. On account of gold and other ignited metals, which
are of the greatest specific density, reject rarity.

9. On account of air, which is generally found to be cold
and yet continues rare, reject rarity.

10. On account of ignited iron,** which does not swell in
bulk, but retains the same apparent dimension, reject the
absolute expansive motion of the whole.

11. On account of the expansion of the air in thermome-
ters and the like, which is absolutely moved and expanded
to the eye, and yet acquires no manifest increase of heat,
again reject absolute or expansive motion of the whole.

12. On account of the ready application of heat to all
substances without any destruction or remarkable altera-
tion of them, reject destructive nature or the violent com-
munication of any new nature.

13. On account of the agreement and conformity of the
effects produced by cold and heat, reject both expansive and
contracting motion as regards the whole.

*§ This is erroneous—all metals expand considerably when heated.

NOVUM ORGANUM 151

14. On account of the heat excited by friction, reject
principal nature, by which we mean that which exists posi-
tively, and is not caused by a preceding nature.

There are other natures to be rejected; but we are merely
offering examples, and not perfect tables.

None of the above natures are of the form of heat; and
man is freed from them all in his operation upon heat.

XIX. In the exclusive table are laid the foundations of
true induction, which is not, however, completed until the
affirmative be attained. Nor is the exclusive table perfect,
nor can it be so at first. For it is clearly a rejection of sim-
ple natures; but if we have not as yet good and just notions
of simple natures, how can the exclusive table be made cor-
rect? Some of the above, as the notion of elementary and
celestial nature, and rarity, are vague and ill defined. We,
therefore, who are neither ignorant nor forgetful of the great
work which we attempt, in rendering the human understand-
ing adequate to things and nature, by no means rest satisfied
with what we have hitherto enforced, but push the matter
further, and contrive and prepare more powerful aid for the
use of the understanding, which we will‘next subjoin. And,
indeed, in the interpretation of nature the mind is to be so
prepared and formed, as to rest itself on proper degrees of
certainty, and yet to remember (especially at first) that what
is present depends much upon what remains behind.

XX. Since, however, truth emerges more readily from
error than confusion, we consider it useful to leave the un-
derstanding at liberty to exert itself and attempt the inter-
pretation of nature in the affirmative, after having con-
structed and weighed the three tables of preparation, such
as we have laid them down, both from the instances there
collected, and others occurring elsewhere. Which attempt

152 NOVUM ORGANUM

we are wont to call the liberty of the understanding, or the
commencement of interpretation, or the first vintage.

The First Vintage of the Form of Heat

It must be observed that the form of anything is inherent
(as appears clearly from our premises) in each individual in-
stance in which the thing itself is inherent, or it would not
be aform. No cuntradictory instance, therefore, can be al-
leged. The form, however, is found to be much more con-
spicuous and evident in some instances than in others; in
those (for example) where its nature is less restrained and
embarrassed, and reduced to rule by other natures. Such
instances we are wont to term coruscations, or conspicuous
instances. We must proceed, then, to the first vintage of
the form of heat.

From the instances taken collectively, as well as singly,
the nature whose limit is heat appears to be motion. This
is chiefly exhibited in flame, which is in constant motion,
and in warm or boiling liquids, which are likewise in con-
stant motion. It is also shown in the excitement or increase
of heat by motion, as by bellows and draughts: for which
see Inst. 29, Tab. 3, and by other species of motion, as in
Inst. 28 and 31, Tab. 8. It is also shown by the extinction
of fire and heat upon any strong pressure, which restrains
and puts a stop to motion; for which see Inst. 80 and 382,
Tab. 3. Itis further shown by this circumstance, namely,
that every substance is destroyed, or at least materially
changed, by strong and powerful fire and heat: whence it is
clear that tumult and confusion are occasioned by heat, to-
gether with a violent motion in the internal parts of bodies;
and this gradually tends to their dissolution.

What we have said with regard to motion must be thus

NOVUM ORGANUM 158

understood, when taken as the genus of heat: if must not
be thought that heat generates motion, or motion heat
(though in some respects this be true), but that the very
essence of heat, or the substantial self ** of heat, is motion
and nothing else, limited, however, by certain differences
which we will presently add, after giving some cautions for
avoiding ambiguity. | |

Sensible heat is relative, and regards man, not universe;
and is rightly held to be merely the effect of heat on animal
spirit. It is even variable in itself, since the same body (in
different states of sensation) excites the feeling of heat and
of cold; this is shown by Inst. 41, Tab. 3.

Nor should we confound the communication of heat or
its transitive nature, by which a body grows warm at the
approach of a heated body, with the form of heat; for heat
is one thing and heating another. Heat can be excited by
friction without any previous heating body, and, therefore,
heating is excluded from the form of heat. Hven when heat
is excited by the approach of a hot body, this depends not
on the form of heat, but on another more profound and com-
mon nature; namely, that of assimilation and multiplication,
about which a separate inquiry must be made.

The notion of fire is vulgar, and of no assistance; it is
merely compounded of the conjunction of heat and light in
any body, as in ordinary flame and red-hot substances.

Laying aside all ambiguity, therefore, we must lastly con-
sider the true differences which limit motion and render it
the form of heat.

I. The first difference is, that heat is an expansive
motion, by which the body strives to dilate itself, and to

34 ‘Quid ipsum,”’ the 7 tt jv elvac of Aristotle.

154 NOVUM ORGANUM

occupy a greater space than before. This difference is
principally seen in flame, where the smoke or thick vapor
is clearly dilated and bursts into flame.

It is also shown in all boiling liquids, which swell, rise,
and boil up to the sight, and the process of expansion is
urged forward till they are converted into a much more
extended and dilated body than the liquid itself, such as
steam, smoke, or alr.

It is also shown in wood and combustibles where exuda-
tion sometimes takes place, and evaporation always.

It is also shown in the melting of metals, which, being
very compact, do not easily swell and dilate, but yet their
spirit, when dilated and desirous of further expansion, forces
and urges its thicker parts into dissolution, and if the heat
be pushed still further, reduces a considerable part of them
into a volatile state.

It is also shown in iron or stones, which though not
melted or dissolved, are however softened. The same cir-
cumstance takes place in sticks of wood, which become flexi-
ble when a little heated in warm ashes. :

It is most readily observed in air, which instantly and
manifestly expands with a small degree of heat, as in Inst.
88, Tab. 3.

It is also shown in the contrary nature of cold; for cold
contracts and narrows every substance;** so that in intense
frosts nails fall out of the wall and brass cracks, and heated
glass exposed suddenly to the cold cracks and breaks. So

85 To show the error of the text, we need only mention the case of water,
which, when confined in corked vases, and exposed to the action of a freezing
atmosphere, is sure to swell out and break those vessels which are not suffi-
ciently large to contain its expanded volume. Megalotti narrates a hundred
other instances of a similar character.—£d,

NOVUM ORGANUM 155

the air, by a slight degree of cold, contracts itself, as in
Inst. 88, Tab. 8. More will be said of this in the inquiry
into cold.

Nor is it to be wondered at if cold and heat exhibit many
common effects (for which see Inst. 82, Tab. 2), since two
differences, of which we shall presently speak, belong to
each nature: although in the present difference the effects
be diametrically opposed to each other. For heat occasions
an expansive and dilating motion, but cold a contracting and
condensing motion.

II. The second difference is a modification of the preced-
ing, namely, that heat is an expansive motion, tending
toward the exterior, but at the same time bearing the body
upward. For there is no doubt that there be many com-
pound motions, as an arrow or dart, for instance, has both
a rotatory and progressive motion. In the same way the
motion of heat is both expansive and tending upward.

This difference is shown by putting the tongs or poker
into the fire. If placed perpendicularly with the hand
above, they soon burn it, but much less speedily if the
hand hold them sloping or from below.

It is alsoconspicuous in distillations per descensum, which
men are wont to employ with delicate flowers, whose scent
easily evaporates. Their industry has devised placing the
fire above instead of below, that’it may scorch less; for not
only flame but all heat has an upward tendency.

Let an experiment be made on the contrary nature of
cold, whether its contraction be downward, as the expansion
of heat is upward. Take, therefore, two iron rods or two
glass tubes, alike in other respects, and warm them a little,
and place a sponge, dipped in cold water, or some snow, be-
low the one and above the other. We are of opinion that

156 NOVUM ORGANUM

the extremities will grow cold in that rod first where it is
placed beneath, as the contrary takes place with regard to
heat.

Ill. The third difference is this; that heat is not a uni-
form expansive motion of the whole, but of the small par-
ticles of the body; and this motion being at the same time
restrained, repulsed, and reflected, becomes alternating, per-
petually hurrying, striving, struggling, and irritated by the
repercussion, which is the source of the violence of flame
and heat.

But this difference is chiefly shown in flame and boiling
liquids, which always hurry, swell, and subside again in de-
tached parts.

It is also shown in bodies of such hard texture as not
to swell or dilate in bulk, such as red-hot iron, in which
the heat is most violent.

It is also shown by the fires burning most briskly in the
coldest weather.

It is also shown by this, that when the air is dilated in
the thermometer uniformly and equably, without any im-
pediment or repulsion, the heat is not perceptible. In con-
fined draughts also, although they break out very violently,
no remarkable heat is perceived, because the motion affects
the whole, without any alternating motion in the particles;
for which reason try whether flame do not burn more at the
sides than in its centre.

It is also shown in this, that all burning proceeds by
the minute pores of bodies— undermining, penetrating,
piercing, and pricking them as if with an infinite number
of needle-points. Hence all strong acids (if adapted to the
body on which they act) exhibit the effects of fire, from
their corroding and pungent nature.

NOVUM ORGANUM 157

The difference of which we now speak is common also
to the nature of cold, in which the contracting motion is
restrained by the resistance of expansion, as in heat the ex-
pansive motion is restrained by the resistance of contraction.

Whether, therefore, the particles of matter penetrate
inward or outward, the reasoning is the same, though the
power be very different, because we have nothing on earth
which is intensely cold.

IV. The fourth difference is a modification of the pre-
ceding, namely, that this stimulating or penetrating motion
should be rapid and never sluggish, and should take place
not in the very minutest particles, but rather in those of
some tolerable dimensions.

It is shown by comparing the effects of fire with those
of time. ‘Time dries, consumes, undermines, and reduces to
ashes as well as fire, and perhaps to a much finer degree;
but as its motion is very slow, and attacks very minute
particles, no heat is perceived. |

It is also shown in a comparison of the dissolution of
iron and gold; for gold is dissolved without the excitement
of any heat, but iron with a vehement excitement of it,
although most in the same time, because in the former the
penetration of the separating acid is mild, and gently in-
sinuates itself, and the particles of gold yield easily, but
the penetration of iron is violent, and attended with some
struggle, and its particles are more obstinate.

It is partially shown, also, in some gangrenes and morti-
fications of flesh, which do not excite great heat or pain,
from the gentle nature of the putrefaction.

Let this suffice for a first vintage, or the commencement
of the interpretation of the form of heat by the liberty of
the understanding.

158 NOVUM ORGANUM

From this first vintage the form or true definition of heat
{considered relatively to the universe and not to the sense)
is briefly thus—Heat is an expansive motion restrained, and
striving to exert itself in the smaller particles.° The ex-
pansion is modified by its tendency to rise, though expand-
ing toward the exterior; and the effort is modified by its not
being sluggish, but active and somewhat violent.

With regard to the operative definition, the matter is the
same. If you are able to excite a dilating or expansive
motion in any natural body, and so to repress that motion
and force it on itself as not to allow the expansion to pro-
ceed equally, but only to be partially exerted and partially
repressed, you will beyond all doubt produce heat, without
any consideration as to whether the body be of earth (or
elementary, as they term it), or imbued with celestial in-
fluence, luminous or opaque, rare or dense, locally expanded

36 Bacon’s inquisition into the nature of heat, as an example of the mode of
interpreting nature, cannot be looked upon otherwise than as a complete failure.
Though the exact nature of this phenomenon is still an obscure and contro-
verted matter, the science of thermotics now consists of many important truths,
and to none of these truths is there so much as an approximation in Bacon’s
process. The steps by which this science really advanced were the discovery
of a measure of a heat or temperature, the establishment of the laws of con-
duction and radiation, of the laws of specific heat, latent heat, and the like.
Such advances have led to Ampére’s hypothesis, that heat consists in the vibra-
tions of an imponderable fluid; and to Laplace’s theory, that temperature con-
sists in the internal radiation of a similar medium. These hypotheses cannot
yet be said to be even probable, but at least they are so modified as to include
some of the preceding laws which are firmly established, whereas Bacon’s
“‘form,’’ or true definition of heat, as stated in the text, includes no laws of
phenomena, explains no process, and is indeed itself an example of illicit gen-
eralization.

In all the details of his example of heat he is unfortunate. He includes in
his collection of instances, the hot tastes of aromatic plants, the caustic effects
of acids, and many other facts which cannot be ascribed to heat without a stu-
dious laxity in the use of the word.—£d.

NOVUM ORGANUM 159

or contained within the bounds of its first dimensions, verg-
ing to dissolution or remaining fixed, animal, vegetable, or
mineral, water, or oil, or air, or any other substance what-
ever susceptible of such motion. Sensible heat is the same,
but considered relatively to the senses. Let us now proceed
to further helps.

XXI. After our tables of first review, our rejection or
exclusive table, and the first vintage derived from them, we
must advance to the remaining helps of the understanding
with regard to the interpretation of nature, and a true and
perfect induction, in offering which we will take the exam-
ples of cold and heat where tables are necessary, but where
fewer instances are required we will go through a variety
of others, so as neither to confound investigation nor to
narrow our doctrine.

In the first place, therefore, we will treat of prerogative
instances;*” 2. Of the supports of induction; 8. Of the cor-

37 By this term Bacon understands general phenomena, taken in order from
the great mass of indiscriminative facts, which, as they lie in nature, are apt
to generate confusion by their number, indistinctness and complication. Such
classes of phenomena, as being peculiarly suggestive of causation, he quaintly
classes under the title of prerogative inquiries, either seduced by the fanciful
analogy, which such instances bore to the prerogativa centuria in the Roman
Comitia, or justly considering them as Herschel supposes to hold a kind of
prerogative dignity from being peculiarly suggestive of causation.

Two high authorities in physical science (v. Herschel, Nat. Phil., art. 192;
Whewell’s Philosophy of the Inductive Sciences, voi. ii. p. 243) pronounce
these instances of little service in the tusk of induction, being for the most part
classed not according to the ideas which they involve, or to any obvious cir-
cumstance in the facts of which they consist, but according to the extent and
manner of their influence upon the inquiry in which they are employed. Thus
we have solitary instances, migrating instances, ostensive instances, clandestine
instances, so termed according to the degree in which they exhibit, or seem to
exhibit, the property, whose nature we would examine. We have guide-post
instances, crucial instances, instances of the parted road, of the doorway, of the
lamy, according to the guidance they supply to our advance. Whewell remarks

160 NOVUM ORGANUM

rection of induction; 4. Of varying the investigation ac-
cording to the nature of the subject; 5. Of the prerogative
natures with respect to investigation, or of what should be
the first or last objects of our research; 6. Of the limits of
investigation, or a synopsis of all natures that exist in the
universe; 7. Of the application to practical purposes, or of
what relates to man; 8. Of the preparations for investiga-
tion; 9. And lastly, of the ascending and descending scale
of axioms.**

XXII. Among the prerogative instances we will first
mention solitary instances. Solitary instances are those
which exhibit the required nature in subjects that have
nothing in common with any other subject than the nature
in question, or which do not exhibit the required nature in
subjects resembling others in every respect except that
of the nature in question; for these instances manifestly
remove prolixity, and accelerate and confirm exclusion, so,
that a few of them are of as much avail as many.

For instance, let the inquiry be the nature of color.
Prisms, crystalline gems, which yield colors not only inter-
nally but on the wall, dews, etc., are solitary instances; for

that such a classification is much of the same nature as if, having to teach the
art of building, we were to describe tools with reference to the amount and place
of the work which they must do, instead of pointing out their construction and
use; as if we were to inform the pupil that we must have tools for lifting a
stone up, tools for moving it sidewise, tools for laying it square, and tools for
cementing it firmly. The means are thus lost in the end, and we reap the fruits
of unmethodical arrangement in the confusion of cross division. In addition,
all the instances are leavened with the error of confounding the laws with the
causes of phenomena, and we are urged to adopt the fundamental error of
seeking therein the universal agents, or general causes of phenomena, without
ascending the gradual steps of intermediate laws.— Ed.

°8 Of these nine general heads no more than the first is prosecuted by the
author.

NOVUM ORGANUM 161

they have nothing in common with the fixed colors in
flowers and colored gems, metals, woods, etc., except the
color itself. Hence we easily deduce that color is nothing
but a modification of the image of the incident and absorbed
light, occasioned in the former case by the different degrees
of incidence, in the latter by the various textures and forms
of bodies.” ‘These are solitary instances as regards simili-
tude.

Again, in the same inquiry the distinct veins of white
and black in marble, and the variegated colors of flowers of
the same species, are solitary instances; for the black and
white of marble, and the spots of white and purple in the
flowers of the stock, agree in every respect but that of color.
Thence we easily deduce that color has not much to do with
the intrinsic natures of any body, but depends only on the
coarser and as it were mechanical arrangement of the parts.
These are solitary instances as regards difference. We call
them both solitary or wild, to borrow a word from the
astronomers.

XXIII. In the second rank of prerogative instances we
will consider migrating instances. In these the required
nature passes toward generation, having no previous exist-
ence, or toward corruption, having first existed. In each
of these divisions, therefore, the instances are always two-
fold, or rather it is one instance, first in motion or on its
passage, and then brought to the opposite conclusion.
These instances not only hasten and confirm exclusion, but
also reduce affirmation, or the form itself, to a narrow com-
pass; for the form must be something conferred by this

89 This very nearly approaches to Sir I. Newton’s discovery of the decom-
position of light by the prism.

162 NOVUM ORGANUM

migration, or, on the contrary, removed and destroyed by
it; and although all exclusion advances affirmation, yet this
takes place more directly in the same than in different sub-
jects; but if the form (as it is quite clear from what has
been advanced) exhibit itself in one subject, it leads to all.
The more simple the migration is, the more valuable is the
instance. ‘These migrating instances are, moreover, very
useful in practice, for since they manifest the form, coupled
with that which causes or destroys it, they point out the
right practice in some subjects, and thence there is an easy
transition to those with which they are most allied. There
is, however, a degree of danger which demands caution,
namely, lest they should refer the form too much to its
efficient cause, and imbue, or at least tinge, the understand-
ing with a false notion of the form from the appearance of
such cause, which is never more than a vehicle or convey-
ance of the form. ‘This may easily be remedied by a proper
application of exclusion.

Let us then give an example of a migrating instance.
Let whiteness be the required nature. An instance which
passes toward generation is glass in its entire and in its
powdered state, or water in its natural state, and when
agitated to froth; for glass when entire, and water in its
natural state, are transparent and not white, but powdered
glass and the froth of water are white and not transparent.
We must inquire, therefore, what has happened to the glass
or water in the course of this migration; for it is manifest
that the form of whiteness is conveyed and introduced by
the bruising of the glass and the agitation of the water;
but nothing is found to have been introduced but a dimin-
ishing of the parts of the glass and water and the insertion
of air. Yet this is no slight progress toward discovering

NOVUM ORGANUM 163

the form of whiteness, namely, that two bodies, in them-
selves more or less transparent (as air and water, or air and
glass), when brought into contact in minute portions, ex-
hibit whiteness from the unequal refraction of the rays
of hght.

But here we must also give an example of the danger
and caution of which we spoke; for instance, it will readily
occur to an understanding perverted by efficients, that air is
always necessary for producing the form of whiteness, or
that whiteness is only generated by transparent bodies, which
suppositions are both false, and proved to be so by many
exclusions; nay, it will rather appear (without any particu-
lar regard to air or the like), that all bodies which are even
in such of their parts as affect the sight exhibit transparency,
those which are uneven and of simple texture whiteness, those
which are uneven and of compound .but regular texture all
the other colors except black, but those which are uneven
and of a compound irregular and confused texture exhibit
blackness. An example has been given, therefore, of an in-
stance migrating toward generation in the required nature of
whiteness. An instance migrating toward corruption in the
same nature is that of dissolving froth or snow, for they lose
their whiteness and assume the transparency of water in its
pure state without air.

Nor should we by any means omit to state, that under
migrating instances we must comprehend not only those
which pass toward generation and destruction, but also those
which pass toward increase or decrease, for they, too, assist
in the discovery of the form, as is clear from our definition
of a form and the Table of Degrees. Hence paper, which is
white when dry, is less white when moistened (from the ex-
clusion of air and admission of water), and tends more to

164 NOVUM ORGANUM

transparency. ‘The reason is the same as in the above in-
stances.”

XXIV. In the third rank of prerogative instances we
will class conspicuous instances, of which we spoke in our
first vintage of the form of heat, and which we are also wont
to call coruscations, or free and predominant instances.
They are such as show the required nature in its bare sub-
stantial shape, and at its height or greatest degree of power,
emancipated and free from all impediments, or at least over-
coming, suppressing, and restraining them by the strength
of its qualities; for since every body is susceptible of many
united forms of natures in the concrete, the consequence is
that they mutually deaden, depress, break, and confine each
other, and the individual forms are obscured. But there are
some subjects in which the required nature exists in its full
vigor rather than in others, either from the absence of any
impediment, or the predominance of its quality. Such in-
stances are eminently conspicuous. But even in these care
must be taken, and the hastiness of the understanding
checked, for whatever makes a show of the form, and forces
it forward, is to be suspected, and recourse must be had to
severe and diligent exclusion.

For example, let heat be the required nature. The ther-
mometer is a conspicuous instance of the expansive motion,
which (as has been observed) constitutes the chief part of
the form of heat; for although flame clearly exhibits expan-
sion, yet from its being extinguished every moment, it does
not exhibit the progress of expansion. Boiling water again,

* The mineral kingdom, as displaying the same nature in all its gradations,
from the shells so perfect in structure in limestone to the finer marbles in
which their nature gradually disappears, is the great theatre for instances
of migration.—Ed.

~

NOVUM ORGANUM 165

from its rapid conversion into vapor, does not so well exhibit
the expansion of water in its own shape, while red-hot iron
and the like are so far from showing this progress, that, on
the contrary, the expansion itself is scarcely evident to the
senses, on account of its spirit being repressed and weakened
by the compact and coarse particles which subdue and re-
strain it. But the thermometer strikingly exhibits the ex-
pansion of the air as being evident and progressive, durable
and not transitory.“

Take another example. Let the required nature be
weight. Quicksilver is a conspicuous instance of weight;
for it is far heavier than any other substance except gold,
which is not much heavier, and it is a better instance than
gold for the purpose of indicating the form of weight; for
gold is solid and consistent, which qualities must be referred
to density, but quicksilver is liquid and teeming with spirit,
yet much heavier than the diamond and other substances
considered to be most solid; whence it is shown that the
form of gravity or weight predominates only in the quantity
of matter, and not in the close fitting of it.” )

XXV. In the fourth rank of prerogative instances we
will class clandestine instances, which we are also wont to

41 Bacon was not aware of the fact since brought to light by Romer, that
down to fourteen fathoms from the earth’s mean level the thermometer remains
fixed at the tenth degree, but that as the thermometer descends below that
depth the heat increases in a ratio proportionate to the descent, which happens
with little variation in all climates. Buffon considers this a proof of a central
fire in our planet.—Zd.

# All the diversities of bodies depend upon two principles, 7.¢., the quantity
and the position of the elements that enter into their composition. The primary
difference is not that which depends on the greatest or least quantity of ma-
terial elements, but: that which depends on their position. It was the quick
perception of this truth that made Leibnitz say that to complete mathematics it
was necessary to join to the analysis of quantity the analysis of position.—Zd.

166 NOVUM ORGANUM

call twilight instances; they are as it were opposed to the
conspicuous instances, for they show the required nature in
its lowest state of efficacy, and as it were its cradle and first
rudiments, making an effort and a sort of first attempt, but
concealed and subdued by a contrary nature. Such in-
stances are, however, of great importance in discovering
forms, for as the conspicuous tend easily to differences, so
do the clandestine best lead to genera, that is, to those com-
mon natures of which the required natures are only the
hmits.

As an example, let consistency, or that which confines
itself, be the required nature, the opposite of which is a
liquid or flowing state. The clandestine instances are such
as exhibit some weak and low degree of consistency in
fluids, as a water bubble, which is a sort of consistent and
bounded pellicle formed out of the substance of the water.
So eaves’ droppings, if there be enough water to follow
them, draw themselves out into a thin thread, not to break
the continuity of the water, but if there be not enough to
follow, the water forms itself into a round drop, which is the
best form to prevent a breach of continuity; and at the mo-
ment the thread ceases, and the water begins to fall in drops,
the thread of water recoils upward to avoid such a breach.
Nay, in metals, which when melted are liquid but more
tenacious, the melted drops often recoil and are suspended.
There is something similar in the instance of the child’s look-
ing-glass, which little boys will sometimes form of spittle
between rushes, and where the same pellicle of water is ob-
servable; and still more in that other amusement of children,
when they take some water rendered a little more tenacious
by soap, and inflate it with a pipe, forming the water into a
sort of castle of bubbles, which assumes such consistency,

NOVUM ORGANUM 167

by the interposition of the air, as to admit of being thrown
some little distance without bursting. The best example is
that of froth and snow, which assume such consistency as
almost to admit of being cut, although composed of air and
water, both liquids. All these circumstances clearly show
that the terms liquid and consistent are merely vulgar no-
tions adapted to the sense, and that in reality all bodies have
a tendency to avoid a breach of continuity, faint and weak
in bodies composed of homogeneous parts (as is the case with
liquids), but more vivid and powerful in those composed of
heterogeneous parts, because the approach of heterogeneous
matter binds bodies together, while the insinuation of homo-
geneous matter loosens and relaxes them.

Again, to take another example, let the required nature
be attraction or the cohesion of bodies. The most remark-
able conspicuous instance with regard to its form is the mag-
net. The contrary nature to attraction is non-attraction,
though in a similar substance. Thus iron does not attract
iron, lead lead, wood wood, nor water water. But the clan-
destine instance is that of the magnet armed with iron, or
rather that of iron in the magnet so armed. For its nature
is such that the magnet when armed does not attract iron
more powerfully at any given distance than when unarmed;
but if the iron be brought in contact with the armed magnet,
the latter will sustain a much greater weight than the simple
magnet, from the resemblance of substance in the two por-
tions of iron, a quality altogether clandestine and hidden in
the iron until the magnet was introduced. It is manifest,
therefore, that the form of cohesion is something which is
vivid and robust in the magnet, and hidden and weak in the
iron. Itis to be observed, also, that small wooden arrows
without an iron point, when discharged from large mortars,

168 NOVUM ORGANUM

penetrate further into wooden substances (such as the ribs of
ships or the like), than the same arrows pointed with iron,“
owing to the similarity of substance, though this quality was
previously latent in the wood. Again, although in the mass
air does not appear to attract air, nor water water, yet when
one bubble is brought near another, they are both more
readily dissolved, from the tendency to contact of the water
with the water, and the air with the air.** These clandes-
tine instances (which are, as has been observed, of the most
important service) are principally to be observéd in small
portions of bodies, for the larger masses observe more uni-
versal and general forms, as will be mentioned in its proper
place.“

43 Query ?

44 The real cause of this phenomenon is the attraction of the surface-water
in the vessel by the sides of the bubbles. When the bubbles approach, the
sides nearest each other both tend to raise the small space of water between
them, and consequently less water is raised by each of these nearer sides than
by the exterior part of the bubble, and the greater weight of the water raised
on the exterior parts pushes the bubbles together. In the same manner a bub-
ble near the side of a vessel is pushed toward it; the vessel and bubble both
drawing the water that is between them. The latter phenomenon cannot be
explained on Bacon’s hypothesis.

45 Modern discoveries appear to bear out the sagacity of Bacon’s remark,
and the experiments of Baron Cagnard may be regarded as a first step toward
its full demonstration. After the new facts elicited by that philosopher, there
can be little doubt that the solid, liquid and aériform state of bodies are merely
stages in a progress of gradual transition from one extreme to the ‘other, and
that however strongly marked the distinctions between them may appear, they
will ultimately turn out to be separated by no sudden or violent line of de-
mareation, but slide into each other by imperceptible gradations. Bacon’s
suggestion, however, is as old as Pythagoras, and perhaps simultaneous with
the first dawn of philosophic reason. The doctrine of the reciprocal transmuta-
tion of the elements underlies all the physical systems of the ancients, and was
adopted by the Epicureans as well as the Stoics. Ovid opens his last book of
the Metamorphoses with the poetry of the subject, where he expressly points
to the hint of Bacon :—

NOVUM ORGANUM 169

XXVI. In the fifth rank of prerogative instances we will
class constitutive instances, which we are wont also to call
collective instances. They constitute a species or lesser
form, as it were, of the required nature. For since the real
forms (which are always convertible with the given nature)
lie at some depth, and are not easily discovered, the neces-
sity of the case and the infirmity of the human understand-
ing require that the particular forms, which collect certain
groups of instances (but by no means all) into some common
notion, should not be neglected, but most diligently ob-
served. For whatever unites nature, even imperfectly,
opens the way to the discovery of the form. The in-
stances, therefore, which are serviceable in this respect
are of no mean power, but endowed with some degree of
prerogative.

Here, nevertheless, great care must be taken that, after
the discovery of several of these particular forms, and the
establishing of certain partitions or divisions of the required
nature derived from them, the human understanding do not
at once rest satisfied, without preparing for the investiga-
tion of the great or leading form, and taking it for granted
that nature is compound and divided from its very root, de-
spise and reject any further union as a point of superfluous
refinement, and tending to mere abstraction. —

For instance, let the required.nature be memory, or that

——‘‘Tenuatus in auras
Aéraque humor abit, etic., ete.

Inde retro redeunt, idemque retexitur ordo.’’—xv. 246-249.

and Seneca, in the third book of his Natural Philosophy, quest. iv., states the
opinion in more precise language than either the ancient bard or the modern
philosopher. —£d.

170 NOVUM ORGANUM

which excites and assists memory. The constitutive in-
stances are order or distribution, which manifestly assists
memory: topics or commonplaces in artificial memory,
which may be either places in their literal sense, as a gate,
a corner, a window, and the like, or familiar persons and
marks, or anything else (provided it be arranged in a deter-
minate order), as animals, plants, and words, letters, char-
acters, historical persons, and the like, of which, however,
some are more convenient than others. All these common-
places materially assist memory, and raise it far above its
natural strength. Verse, too, is recollected and learned
more easily than prose. From this group of three instances
—order, the commonplaces of artificial memory, and verses
—is constituted one species of aid for the memory,** which
may be well termed a separation from infinity. For when
a man strives to recollect or recall anything to memory,
without a preconceived notion or perception of the object
of his search, he inquires about, and labors, and turns from
point to point, as if involved in infinity. But if he have
any preconceived notion, this infinity is separated off, and
the range of his memory is brought within closer limits.
In the three instances given above, the preconceived notion
is clear and determined. In the first, it must be something
that agrees with order; in the second, an image which has
some relation or agreement with the fixed commonplaces;
in the third, words which fall into a verse: and thus infinity
is divided off. Other instances will offer another species,
namely, that whatever brings the intellect into contact with

4° The author’s own system of Memoria Technica may be found in the De
Augmentis, chap. xv. We may add that, notwithstanding Bacon’s assertion
that he intended his method to apply to religion, politics, and morals, this is
the only lengthy illustration he has adduced of any subject out of the domain
of physical science. —<d.

NOVUM ORGANUM 171

something that strikes the sense (the principal point of
artificial memory), assists the memory. Others again offer .
another species, namely, whatever excites an impression
by any powerful passion, as fear, shame, wonder, delight,
assists the memory. Other instances will afford another
species: thus those impressions remain most fixed in the
memory which are taken from the mind when clear and
least occupied by preceding or succeeding notions, such as
the things we learn in childhood, or imagine before sleep,
and the first time of any circumstance happening. Other
instances afford the following species: namely, that a mul-
titude of circumstances or handles assist the memory, such
as writing in paragraphs, reading aloud, or recitation.
Lastly, other instances afford still another species: thus
the things we anticipate, and which rouse our attention,
are more easily remembered than transient events; as if
you read any work twenty times over, you will not learn
it by heart so readily as if you were to read it but ten
times, trying each time to repeat it, and when your memory
fails you looking into the book. There are, therefore, six
lesser forms, as it were, of things which assist the memory:
namely—l, the separation of infinity; 2, the connection of
the mind with the senses; 8, the impression in strong
passion; 4, the impression on the mind when pure; 5, the
multitude of handles; 6, anticipation.

Again, for example’s sake, let the required nature be
taste or the power of tasting. The following instances are
constitutive: 1. Those who do not smell, but are deprived
by nature of that sense, do not perceive or distinguish rancid
or putrid food by their taste, nor garlic from roses, and the
like. 2. Again, those whose nostrils are obstructed by

accident (such as a cold) do not distinguish any putrid or
ScIENCE— Vol, 22—8

1i2 NOVUM ORGANUM

rancid matter from anything sprinkled with rose-water.
3. If those who suffer from a cold blow their noses vio-
lently at the very moment in which they have anything
fetid or perfumed in their mouth, or on their palate, they
instantly have a clear perception of the fetor or perfume.
These instances afford and constitute this species or division
of taste, namely, that it is in part nothing else than an in-
ternal smelling, passing and descending through the upper
passages of the nostrils to the mouth and palate. But, on
the other hand, those whose power of smelling is deficient
or obstructed, perceive what is salt, sweet, pungent, acid,
rough, and bitter, and the like, as well as any one else: so
that the taste is clearly something compounded of the in-
ternal smelling, and an exquisite species of touch which
we will not here discuss.

Again, as another example, let the required nature be
the communication of quality, without intermixture of sub-
stance. ‘The instance of light will afford or constitute one
species of communication, heat and the magnet another.
For the communication of light is momentary and imme-
diately arrested upon the removal of the original light.
But heat, and the magnetic force, when once transmitted
to or excited in another body, remain fixed for a consider-
able time after the removal of the source.

In fine, the prerogative of constitutive instances is con-
siderable, for they materially assist the definitions (especially
in detail) and the divisions or partitions of natures, concern-
ing which Plato has well said, ‘‘He who can properly define
and divide is to be considered a god.”’ *”

47 The collective instances here meant are no other than general facts or
laws of some degree of generality, and are themselves the result of induction.
For example, the system of Jupiter, or Saturn with its satellites, is a collective |

NOVUM ORGANUM 1738

XXVII. In the sixth rank of prerogative instances we
will place similar or proportionate instances, which we are
also wont to call physical parallels, or resemblances. They
are such as exhibit the resemblances and connection of
things, not in minor forms (as the constitutive do), but at
once in the concrete. They are, therefore, as 1t were, the
first and lowest steps toward the union of nature; nor do
they immediately establish any axiom, but merely indicate
and observe a certain relation of bodies to each other. But

instance, and materially assisted in securing the admission of the Copernican
system. We have here in miniature, and displayed at one view, a system anal-
ogous to that of the planets about the sun, of which, from the circumstance of
our being involved in it, and unfavorably situated for seeing it otherwise than
in detail, we are incapacitated from forming a general idea, but by slow and
progressive efforts of reason.

But there is a species of collective instance which Bacon does not seem to
have contefplated, in which particular phenomena are presented in such num-
bers at once, as to make the induction of their law a matter of ocular inspec-
tion. For example, the parabolic form assumed by a jet of water spouted out
of a hole is a collective instance of the velocities and directions of the motions
of all the particles which compose it seen together, and which thus leads us
without trouble to recognize the law of the motion of a projectile. Again, the
beautiful figures exhibited by sand strewed on regular plates of glass or metal
set in vibration, are collective instances of an infinite number of points which
remain at rest while the remainder of the plate vibrates, and in consequenee
afford us an insight into the law which regulates their arrangement and se-
quence throughout the whole surface. The richly colored lemniscates seen
around the optic axis of crystals exposed to polarized light afford a striking
instance of the same kind, pointing at once to the general mathematical expres-
sion of the law which regulates their production. Such collective instances as
these lead us to a general law by an induction which offers itself spontaneously,
and thus furnish advanced posts in philosophical exploration. The laws of
Kepler, which Bacon ignored on account of his want of mathematical taste,
may be cited as a collective instance. The first is, that the planets move in
elliptical orbits, having the sun for their common focus. The second, that
about this focus the radius vector of each planet describes equal areas in equal
times. The third, that the squares of the periodic times of the planets are as
the cubes of their mean distance from the sun. This collective instance ‘‘opened
the way’’ to the discovery of the Newtonian law of gravitation.—d.,

174 NOVUM ORGANUM

although they be not of much assistance in discovering
forms, yet they are of great advantage in disclosing the
frame of parts of the universe, upon whose members they
practice a species of anatomy, and thence occasionally lead
us gently on to sublime and noble axioms, especially such
as relate to the construction of the world, rather than to
simple natures and forms.

As an example, take the following similar instances: a
mirror and the eye; the formation of the ear, and places
which return an echo. From such similarity, besides ob-
serving the resemblance (which is useful for many pur-
poses), it is easy to collect and form this axiom. That
the organs of the senses, and bodies which produce reflec-
tions to the senses, are of a similar nature. Again, the
understanding once informed of this, rises easily to a higher
and nobler axiom; namely, that the only distinction between
sensitive and inanimate bodies, in those points in which
they agree and sympathize, is this: in the former, animal
spirit is added to the arrangement of the body, in the latter
it is wanting. So that there might be as many senses in
animals as there are points of agreement with inanimate
bodies, if the animated body were perforated, so as to allow
the spirit to have access to the limb properly disposed for
action, as a fit organ. And, on the other hand, there are,
without doubt, as many motions in an inanimate as there
are senses in the animated body, though the animal spirit
be absent. There must, however, be many more motions
in inanimate bodies than senses in the animated, from the
small number of organs of sense. A very plain example
of this is afforded by pains. For, as animals are liable to
many kinds and various descriptions of pains (such as those
of burning, of intense cold, of pricking, squeezing, stretch-

NOVUM ORGANUM 175

ing, and the lke), so is it most certain, that the same cir-
cumstances, as far as motion is concerned, happen to inani-
mate bodies, such as wood or stone when burned, frozen,
pricked, cut, bent, bruised, and the like; although there be
no sensation, owing to the absence of animal spirit.

Again, wonderful as it may appear, the roots and
branches of trees are similar instances. For every vege-
table swells and throws out its constituent parts toward
the circumference, both upward and downward. And there
is no difference between the roots and branches, except
that the root is buried in the earth, and the branches are
exposed to the air and sun. For if one take a young and
vigorous shoot, and bend it down to a small portion of loose
earth, although it be not fixed to the ground, yet will it
immediately produce a root, and not a branch. And, vice
versa, if earth be placed above, and so forced down with
a stone or any hard substance, as to confine the plant and
prevent its branching upward, it will throw out branches
into the air downward.

The gums of trees, and most rock gems, are similar in-
stances; for both of them are exudations and filtered juices,
derived in the former instance from trees, in the latter from
stones; the brightness and clearness of both arising from a
delicate and accurate filtering. For nearly the same reason,
the hair of animals is less beautiful and vivid in its color
than the plumage of most birds, because the juices are less
delicately filtered through the skin than through the quills.

The scrotum of males and matrix of females are also
similar instances; so that the noble formation which consti-
tutes the difference of the sexes appears to differ only as
to the one being internal and the other external; a greater
degree of heat causing the genitals to protrude in the male,

176 NOVUM ORGANUM

while the heat of the female being too weak to effect this,
they are retained internally.

The fins of fishes and the feet of quadrupeds, or the feet
and wings of birds, are similar instances; to which Aristotle
adds the four folds in the motion of serpents;** so that in
the formation of the universe, the motion of animals appears
to be chiefly effected by four joints or bendings.

The teeth of land animals, and the beaks of birds, are
similar instances, whence it is clear, that in all perfect
animals there is a determination of some hard substance
toward the mouth.

Again, the resemblance and conformity of man to an
inverted plant is not absurd. For the head is the root of
the nerves and animal faculties, and the seminal parts are
the lowest, not including the extremities of the legs and
arms. But in the plant, the root (which resembles the head)
is regularly placed in the lowest, and the seeds in the high-
est part.”

Lastly, we must particularly recommend and suggest,
that man’s present industry in the investigation and com-
pilation of natural history be entirely changed, and directed
to the reverse of the present system. For it has hitherto
been active and curious in noting the variety of things, and
explaining the accurate differences of animals, vegetables,
and minerals, most of which are the mere sport of nature,
rather than of any real utility as concerns the sciences.

48 Ts not this very hasty generalization? Do serpents move with four folds
only ? Observe also the motion of centipedes and other insects.

49 Shaw states another point of difference between the objects cited in the
text—animals having their roots within, while plants have theirs without; for
their lacteals nearly correspond with the fibres of the roots in plants; so that
animals seem nourished within themselves as plants are without.—£d,

NOVUM ORGANUM wi

Pursuits of this nature are certainly agreeable, and some-
times of practical advantage, but contribute little or nothing
to the thorough ‘investigation of nature. Our labor must
therefore be directed toward inquiring into and observing
resemblances and analogies, both in the whole and its parts,
for they unite nature, and lay the foundation of the sciences.

Here, however, a severe and rigorous caution must be
observed, that we only consider as similar and proportionate
instances, those which (as we first observed) point out
physical resemblances; that is, real and substantial resem-
blances, deeply founded in nature, and not casual and
superficial, much less superstitious or curious; such as
those which are constantly put forward by the writers on
natural magic (the most idle of men, and who are scarcely
fit to be named in connection with such serious matters as
we now treat of), who, with much vanity and folly, describe,
and sometimes too, invent, unmeaning resemblances and
sympathies.

But leaving such to themselves, similar instances are
not to be neglected, in the greater portions of the world’s
conformation; such as Africa and the Peruvian continent,
which reaches to the Straits of Magellan; both of which
possess a similar isthmus and similar capes, a circumstance
not to be attributed to mere accident.

Again, the New and Old World are both of them broad
and expanded toward the north, and narrow and pointed
toward the south.

Again, we have very remarkable similar instances in the
intense cold, toward the middle regions (as it is termed) of
the air, and the violent fires which are often found to burst
from subterraneous spots, the similarity consisting in both
being ends and extremes; the extreme of the nature of cold,

173 NOVUM ORGANUM

for instance, is toward the boundary of heaven, and that of
the nature of heat toward the centre of the earth, by a
similar species of opposition or rejection of the contrary
nature.

Lastly, in the axioms of the sciences, there is a similarity
of instances worthy of observation. Thus the rhetorical
trope which is called surprise, is similar to that of music
termed the declining of a cadence. Again—the mathe-
matical postulate, that things which are equal to the same
are equal to one another, is similar to the form of the syl-
logism in logic, which unites things agreeing in the middle
term.” Lastly, a certain degree of sagacity in collecting
and searching for physical points of similarity, is very use-
ful in many respects.”

XXVIII. In the seventh rank of prerogative instances,
we will place singular instances, which we are also wont to
call irregular or heteroclite (to brorrow a term from the
grammarians). ‘They are such as exhibit bodies in the con-

,°® Bacon falls into an error here in regarding the syllogism as something
distinct from the reasoning faculty, and only one of its forms. It is not gen-
erally true that the syllogism is only a form of reasoning by which we unite
ideas which accord with the middle term. This agreement is not even essen-
tial to accurate syllogisms; when the relation of the two things compared to
the third is one of equality or similitude, it of course follows that the two
things compared may be pronounced equal, or like to each other. But if the
relation between these terms exist in a different form, then it is not true that
the two extremes stand in the same relation to each other as to the middle
term. For instance, if a is double of B, and B double of ©, then a is quadruple
of c. But then the relation of a to c is different from that of a to B and
of B to 0.—Ed.

5! Comparative anatomy is full of analogies of this kind. Those between
natural and artificial productions are well worthy of attention, and sometimes
lead to important discoveries. By observing an analogy of this kind between
the plan used in hydraulic engines for preventing the counter-current of a fluid,
and a similar contrivance in the blood vessels, Harvey was led to the discovery
of the circulation of the blood.— Ed.

NOVUM ORGANUM 179

crete, of an apparently extravagant and separate nature,
agreeing but little with other things of the same species.
For, while the similar instances resemble each other, those
we now speak of are only like themselves. Their use is
much the same with that of clandestine instances: they
bring out and unite nature, and discover genera or common
natures, which must afterward be limited by real differ-
ences. Nor should we desist from inquiry, until the prop-
erties and qualities of those things, which may be deemed
miracles, as it were, of nature, be reduced to, and compre-
hended in, some form or certain law; so that all irregularity
or singularity may be found to depend on some common
form; and the miracle only consists in accurate differences,
degree, and rare coincidence, not in the species itself.
Man’s meditation proceeds no further at present, than
just to consider things of this kind as the secrets and vast
efforts of nature, without an assignable cause, and, as it
were, exceptions to general rules.

As examples of singular instances, we have the sun and
moon among the heavenly bodies; the magnet among min-
erals; quicksilver among metals; the elephant among quad-
rupeds; the venereal sensation among the different kinds
of touch; the scent of sporting dogs among those of smell.
The letter 5, too, is considered by the grammarians as sui
generis, from its easily uniting with double or triple con-
sonants, which no other letter will. These instances are of
great value, because they excite and keep alive inquiry,
and correct an understanding depraved by habit and the
common course of things.

XXIX. In the eighth rank of prerogative instances, we
will place deviating instances, such as the errors of nature,
or strange and monstrous objects, in which nature deviates

180 . NOVUM ORGANUM

and turns from her ordinary course. For the errors ci
nature differ from singular instances, inasmuch as the lat-
ter are the miracles of species, the former of individuals.
Their use is much the same, for they rectify the under-
standing in opposition to habit, and reveal common forms.
For with regard to these, also, we must not desist from in-
quiry, till we discern the cause of the deviation. The cause
does not, however, in such cases rise to a regular form, but
only to the latent process toward such a form. For he who
is acquainted with the paths of nature, will more readily
observe her deviations; and, vice versd, he who has learned
her deviations will be able more accurately to describe
her paths.

They differ again from singular instances, by being
much more apt for practice and the operative branch.
For it would be very difficult to generate new species,
but less so to vary known species, and thus produce many
rare and unusual results. The passage from the miracles
of nature to those of art is easy; for if nature be once seized
in her variations, and the cause be manifest, it will be easy
to lead her by art to such deviation as she was at first led
to by chance; and not only to that but others, since devia-
tions on the one side lead and open the way to others in
every direction. Of this we do not require any examples,
since they are so abundant. For a compilation, or particu-
lar natural history, must be made of all monsters and pro-
digious births of nature; of everything, in short, which is
new, rare and unusual in nature. This should be done
with a rigorous selection, so as to be worthy of credit.

8? This is well illustrated in plants, for the gardener can produce endless
varieties of any known species, but can never produce a new species itself.

NOVUM ORGANUM 181

Those are most to be suspected which depend upon super-
stition, as the prodigies of Livy, and those perhaps, but
little less, which are found in the works of writers on nat-
ural magic, or even alchemy, and the like; for such men,
as it were, are the very suitors and lovers of fables; but our
instances should be derived from some grave and credible/
history, and faithful narration.

XXX. In the ninth rank of prerogative instances, we
will place bordering instances, which we are also wont to
term participants. They are such as exhibit those species
of bodies which appear to be composed of two species, or
to be the rudiments between the one and the other. They
may well be classed with the singular or heteroclite in-
stances; for in the whole system of things, they are rare
and extraordinary. Yet from their dignity, they must be
treated of and classed separately, for they point out admir-
ably the order and constitutign of things, and suggest the
causes of the number and quality of the more common
Species in the universe, leading the understanding from
that which is, to that which is possible.

We have examples of them in moss, which is something
between putrescence and a plant;** in some comets, which
hold a place between stars and ignited meteors; in flying
fishes, between fishes and birds; and in bats, between birds
and quadrupeds.“ Again,

Simia quam similis turpissima bestia nobis.

8 The discoveries of Tournefort have placed moss in the class of plants.
The fish alluded to below are to be found only in the tropics. —£d.

4 There is, however, no real approximation to birds in either the flying fish
or bat, any more than a man approximates to a fish because he can swim. The
wings of the flying fish and bat are mere expansions of skin, bearing no resem-
blance whatever to those of birds.—Ed.

182 NOVUM ORGANUM

We have also biformed foetus, mingled species and
the like.

XXXI. In the tenth rank of prerogative instances, we
will place the instances of power, or the fasces (to borrow
a term from the insignia of empire), which we are also wont
to call the wit or hands of man. These are such works as
are most noble and perfect, and, as it were, the masterpieces
in every art. For since our principal object is to make na-
ture subservient to the state and wants of man, it becomes
us well to note and enumerate the works, which have long
since been in the power of man, especially those which are
most polished and perfect: because the passage from these
to new and hitherto undiscovered works, is more easy and
feasible. For if any one, after an attentive contemplation
of such works as are extant, be willing to push forward
in his design with alacrity and vigor, he will undoubtedly
either advance them, or turn them to something within
their immediate reach, or even apply and transfer them
to some more noble purpose.

Nor is this all: for as the understanding is elevated and
raised by rare and unusual works of nature, to investigate
and discover the forms which include them also, so is the
same effect frequently produced by the excellent and won-
derful works of art; and even to a greater degree, because
the mode of effecting and constructing the miracles of art
is generally plain, while that of effecting the miracles
of nature is more obscure. Great care, however, must be
taken, that they do not depress the understanding, and
fix it, as it were, to earth.

For there is some danger, lest the understanding should
be astonished and chained down, and as it were bewitched,
by such works of art, as appear to be the very summit and

NOVUM ORGANUM 183

pinnacle of human industry, so as not to become familar
with them, but rather to suppose that nothing of the kind
can be accomplished, unless the same means be employed,
with perhaps a little more diligence, and more accurate
preparation.

Now, on the contrary, it may be stated as a fact, that
the ways and means hitherto discovered and observed, of
effecting any matter or work, are for the most part of little
value, and that all really efficient power depends, and is
really to be deduced from the sources of forms, none
of which have yet been discovered.

Thus (as we have before observed), had any one medi-
tated on ballistic machines, and battering rams, as they were
used by the ancients, whatever application he might have
exerted, and though he might have consumed a whole life
in the pursuit, yet would he never have hit upon the in-
vention of flaming engines, acting by means of gunpowder;
nor would any person, who had made woollen manufacto-
ries and cotton the subject of his observation and reflection,
have ever discovered thereby the nature of the silkworm
or of silk. |

Hence all the most noble discoveries have (if you ob-
serve) come to light, not by any gradual improvement and
extension of the arts, but merely by chance; while nothing
imitates or anticipates chance (which is wont to act at in-
tervals of ages) but the invention of forms.

There is no necessity for adducing any particular exam-
ples of these instances, since they are abundant. The plan
to be pursued is this: all the mechanical, and even the lib-
eral arts (as far as they are practical), should be visited and
thoroughly examined, and thence there should be formed
a compilation or particular history of the great master-

184 NOVUM ORGANUM

pieces, or most finished works in each, as well as of
the mode of carrying them into effect.

Nor do we confine the diligence to be used in such a
compilation to the leading works and secrets only of every
art, and such as excite wonder; for wonder is engendered
by rarity, since that which is rare, although it be com-
pounded of ordinary natures, always begets wonder.

On the contrary, that which is really wonderful, from
some specific difference distinguishing it from other species,
is carelessly observed, if it be but familiar. Yet the singu-
lar instances of art should be observed no less than those of
nature, which we have before spoken of: and as in the lat-
ter we have classed the sun, the moon, the magnet, and the
like, all of them most familiar to us, but yet in their nature
singular, so should we proceed with the singular instances
of art.

For example: paper, a very common substance, is a
singular instance of art; for if you consider the subject at-
tentively, you will find that artificial substances are either
woven by straight and transverse lines, as silk, woollen,
or linen cloth, and the like; or coagulated from concrete
juices, such as brick, earthenware, glass, enamel, porcelain
and the like, which admit of a polish if they be compact,
but if not, become hard without being polished; all which
latter substances are brittle, and not adherent or tenacious.
On the contrary, paper is a tenacious substance, which can
be cut and torn, so as to resemble and almost rival the skin
of any animal, or the leaf of vegetables, and the like works
of nature; being neither brittle like glass, nor woven like
cloth, but having fibres and not distinct threads, just as
natural substances, so that scarcely anything similar can
be found among artificial substances, and it is absolutely

NOVUM ORGANUM 185

singular. And in artificial works we should certainly pre-
fer those which approach the nearest to an imitation of na-
ture, or, on the other hand, powerfully govern and change
her course.

Again, in these instances which we term the wit and
hands of man, charms and conjuring should not be alto-
gether despised, for although mere amusements, and of
little use, yet they may afford considerable information.

Lastly, superstition and magic (in its common accepta-
tion) are not to be entirely omitted; for although they be
overwhelmed by a mass of lies and fables, yet some inves-
tigation should be made, to see if there be really any latent
natural operation in them; as in fascination, and the fortify-
ing of the imagination, the sympathy of distant objects, the
transmission of impressions from spirit to spirit no less than
from body to body, and the like.

XXXII. From the foregoing remarks, it is clear that the
last five species of instances (the similar, singular, deviating
and bordering instances, and those of power) should not be
reserved for the investigation of any given nature, as the
preceding and many of the succeeding instances must, but
a collection of them should be made at once, in the style
of a particular history, so that they may arrange the matter
which enters the understanding, and correct its depraved
habit, for it is necessarily imbued, corrupted, perverted
and distorted by daily and habitual impressions.

They are to be used, therefore, as a preparative, for the
purpose of rectifying and purifying the understanding; for
whatever withdraws it from habit, levels and planes down
its surface for the reception of the dry and pure light of
true notions.

These instances, moreover, level and prepare the way

186 NOVUM ORGANUM

for the operative branch, as we will mention in its proper
place when speaking of the practical deductions.

XX XIII. In the eleventh rank of prerogative instances
we will place accompanying and hostile instances. These
are such as exhibit any body or concrete, where the required
nature is constantly found, as an inseparable companion,
or, on the contrary, where the required nature is constantly
avoided, and excluded from attendance; as an enemy. From
these instances may be formed certain and universal propo-
sitions, either affirmative or negative; the subject of which
will be the concrete body, and the predicate the required
nature. For particular propositions are by no means fixed,
when the required nature is found to fluctuate and change
in the concrete, either approaching and acquired, or reced-
ing and laid aside. Hence particular propositions have no
great prerogative, except in the case of migration, of which
we have spoken above. Yet such particular propositions
are of great use, when compared with the universal, as will
be mentioned in its proper place. Nor do we require abso-
lute affirmation or negation, even in universal propositions,
for if the exceptions be singular or rare, it is sufficient for
our purpose.

The use of accompanying instances is to narrow the
affirmative of form; for as it is narrowed by the migrating
instances, where the form must necessarily be something
communicated or destroyed by the act of migration, so it is
narrowed by accompanying instances, where the form must
necessarily be something which enters into the concretion
of the body, or, on the contrary, is repugnant to it; and
one who is well acquainted with the constitution or forma-
tion of the body, will not be far from bringing to light the
form of the required nature.

NOVUM ORGANUM 187

For example: let the required nature be heat. Flame
is an accompanying instance; for in water, air, stone, metal,
and many other substances, heat is variable, and can ap-
proach or retire; but all flame is hot, so that heat always
accompanies the concretion of flame. We have no hostile
instance of heat; for the senses are unacquainted with the
interior of the earth, and there is no concretion of any
known body which is not susceptible of heat.

Again, let solidity be the required nature. Air is a
hostile instance; for metals may be liquid or solid, so may
glass; even water may become solid by congelation, but air
cannot become solid or lose its fluidity.

With regard to these instances of fixed propositions,
there are two points to be observed, which are of impor-
tance. First, that if there be no universal affirmative or
negative, it be carefully noted as not existing. Thus, in
heat, we have observed that there exists no universal nega-
tive, in such substances, at least, as have come to our
knowledge. Again, if the required nature be eternity or
incorruptibility, we have no universal affirmative within
our sphere, for these qualities cannot be predicated of any
bodies below the heavens, or above the interior of the earth.
Secondly, to our general propositions as to any concrete,
whether affirmative or negative, we should subjoin the
concretes which appear to approach nearest to the non-
existing substances; such as the most gentle or least-
burning flames in heat, or gold in incorruptibility, since it
approaches nearest to it. For they all serve to show the
limit of existence and non-existence, and circumscribe
forms, so that they cannot wander beyond the conditions
of matter.

XXXIV. In the twelfth rank of prerogative instances,

188 NOVUM ORGANUM

we will class those subjunctive instances, of which we spoke
in the last aphorism, and which we are also wont to call
instances of extremity or limits; for they are not only
serviceable when subjoined to fixed propositions, but also
of themselves and from their own nature. They indicate
with sufficient precision the real divisions of nature, and
measures of things, and the ‘‘how far’’ nature effects or
allows of anything, and her passage thence to something
else. Such are gold in weight, iron in hardness, the whale
in the size of animals, the dog in smell, the flame of gun-
powder in rapid expansion, and others of a like nature.
Nor are we to pass over the extremes in defect, as well as
in abundance, as spirits of wine in weight, the touchstone
in softness, the worms upon the skin in the size of animals,
and the like.

XXXV. In the thirteenth rank of prerogative instances
we will place those of alliance or union. They are such as
mingle and unite natures held to be heterogeneous, and
observed and marked as such in received classifications.

These instances show that the operation and effect, which
is considered peculiar to some one of such heterogeneous
natures, may also be attributed to another nature styled
heterogeneous, so as to prove that the difference of the
natures is not real nor essential, but a mere modification
of a common nature. They are very serviceable, there-
fore, in elevating and carrying on the mind, from differ-
ences to genera, and in removing those phantoms and
images of things, which meet it in disguise in concrete
substances.

For example: let the required nature be heat. The
classification of heat into three kinds, that of the celestial
bodies, that of animals, and that of fire, appears to be set-

» |

NOVUM ORGANUM 189

tled and admitted; and these kinds of heat, especially one
of them compared with the other two, are supposed to be
different, and clearly heterogeneous in their essence and
species, or specific nature, since the heat of the heavenly
bodies and of animals generates and cherishes, while that
of fire corrupts and destroys. We have an instance of
alliance, then, in a very common experiment, that of a
vine branch admitted into a building where there is a con-
stant fire, by which the grapes ripen a whole month sooner
than in the air; so that fruit upon the tree can be ripened
by fire, although this appear the peculiar effect of the
sun. From this beginning, therefore, the understanding
rejects all essential difference, and easily ascends to the
investigation of the real differences between the heat of
the sun and that of fire, by which their operation is
rendered dissimilar, although they partake of a common
nature.

These differences will be found to be four in number.
1. The heat of the sun is much milder and gentler in degree
than that of fire. 2. It is much more moist in quality,
especially as it is transmitted to us through the air. 8.
Which is the chief point, it is very unequal, advancing and
increased at one time, retiring and diminished at another,
which mainly contributes to the generation of bodies. For
Aristotle rightly asserted, that the principal cause of gen-
eration and corruption on the surface of the earth was the
oblique path of the sun in the zodiac, whence its heat be-
comes very unequal, partly from the alternation of night
and day, partly from the succession of summer and winter.
Yet must he immediately corrupt and pervert his discovery,
by dictating to nature according to his habit, and dogmati-
cally assigning the cause of generation to the approach of

190 NOVUM ORGANUM

the sun, end that of corruption to its retreat; while, in fact,
each circumstance indifferently and not respectively con-
tributes both to generation and corruption; for unequal
heat tends to generate and corrupt, as equable heat does
to preserve. 4. The fourth difference between the heat of
the sun and fire is of great consequence; namely, that the
sun, gradually, and for a length of time, insinuates its
effects, while those of fire (urged by the impatience of
man) are brought to a termination in a shorter space of
time. But if any one were to pay attention to the temper-
ing of fire, and reducing it to a more moderate and gentle
degree (which may be done in various ways), and then were
to sprinkle and mix a degree of humidity with it; and,
above all, were to imitate the sun in its inequality; and,
lastly, were patiently to suffer some delay (not such, how-
ever, aS is proportioned to the effects of the sun, but more
than men usually admit of in those of fire), he would soon
banish the notion of any difference, and would attempt, or
equal, or perhaps sometimes surpass the effect of the sun,
by the heat of fire. A like instance of alliance is that of
reviving butterflies, benumbed and nearly dead from cold,
by the gentle warmth of fire; so that fire is no less able to
revive animals than to ripen vegetables. We may also
mention the celebrated invention of Fracastorius, of apply-
ing a pan considerably heated to the head in desperate cases
of apoplexy, which clearly expands the animal spirits, when
compressed and almost extinguished by the humors and
obstructions of the brain, and excites them to action, as the
fire would operate on water or gir, and in the result pro-
duces life. Eggs are sometimes hatched by the heat of fire,
an exact imitation of animal heat; and there are many in-
stances of the like nature, so that no one can doubt that the

NOVUM ORGANUM 191

heat of fire, in many cases, can be modified till it resemble
that of the heavenly bodies and of animals.

Again, let the required natures be motion and rest.
There appears to be a settled classification, grounded on
the deepest philosophy, that natural bodies either revolve,
move ina straight line, or stand still and rest. For there
is either motion without limit, or continuance within a cer-
tain limit, or a translation toward a certain limit. The eter-
nal motion of revolution appears peculiar to the heavenly
bodies, rest to this our globe, and the other bodies (heavy
and light, as they are termed, that is to say, placed out of
their natural position) are borne in a straight line to masses
or aggregates which resemble them, the hght toward the
heaven, the heavy toward the earth; and all this is very
fine language.

But we have an instance of alliance in low comets, which
revolve, though far below the heavens; and the fiction of
Aristotle, of the comet being fixed to, or necessarily fol-
lowing some star, has been long since exploded; not only
because it is improbable in itself, but from the evident fact
of the discursive and irregular motion of comets through
various parts of the heavens.”

Another instance of alliance is that of the motion of air,
which appears to revolve from east to west within the trop-
ics, where the circles of revolution are the greatest.

The flow and ebb of the sea would perhaps be another
instance, if the water were once found to have a motion of

°° Seneca was a sounder astronomer than Bacon. He ridiculed the idea of
the motion of any heavenly bodies being irregular, and predicted that the day
would come, when the laws which guided the revolution of these bodies would
be proved to be identical with those which controlled the motions of the planets.
The anticipation was realized by Newton.—Zd.

192 ROVUOM ORGANUM

revoluticn, though slow and hardly perceptible, from east
to west, subject, however, to a reaction twice a day. If
this be so, it is clear that the motion of revolution is not
confined to the celestial bodies, but is shared, also, by air
and water.

Again—the supposed peculiar disposition of light bodies
to rise is rather shaken; and here we may find an instance
of alliance in a water bubble. For if air be placed under
water, it rises rapidly toward the surface by that striking
motion (as Democritus terms it) with which the descending
water strikes the air and raises it, not by any struggle or
effort of the air itself; and when it has reached the surface
of the water, it is prevented from ascending any further, by
the slight resistance it meets with in the water, which does
not allow an immediate separation of its parts, so that the
tendency of the air to rise must be very slight.

Again, let the required nature be weight. It is certainly
a received classification, that dense and solid bodies are
borne toward the centre of the earth, and rare and light
bodies to the circumference of the heavens, as their appro-
priate places. As far as relates to places (though these
things have much weight in the schools), the notion of
there being any determinate place is absurd and puerile.
Philosophers trifle, therefore, when they tell you, that if
the earth were perforated, heavy bodies would stop on their
arrival at the centre. This centre would indeed be an effi-
cacious nothing, or mathematical point, could it affect
bodies or be sought by them, for a body is not acted upon
except by a body.” In fact, this tendency to ascend and

°° But see Bacon’s own corollary at the end of the Instances of Divorce,
Aphorism xxxvii. If Bacon’s remark be accepted, the censure will fall upon

NOVUM ORGANUM 193

descend is either in the conformation of the moving body,
or in its harmony and sympathy with another body. But
if any dense and solid body be found, which does not, how-
ever, tend toward the earth, the classification is at an end.
Now, if we allow of Gilbert’s opinion, that the magnetic
power of the earth, in attracting heavy bodies, is not ex-
tended beyond the limit of its peculiar virtue (which oper-
ates always at a fixed distance and no further),” and this
be proved by some instance, such an instance will be one
of alliance in our present subject. The nearest approach
to it is that of waterspouts, frequently seen by persons navi-
gating the Atlantic toward either of the Indies. For the
force and mass of the water suddenly effused by water-
spouts, appears to be so considerable, that the water must
have been collected previously, and have remained fixed
where it was formed, until it was afterward forced down by
some violent cause, rather than made to fall by the natural
motion of gravity: so that it may be conjectured that a
dense and compact mass, at a great distance from the earth,
may be suspended as the earth itself is, and would not fall,
unless forced down. We do not, however, affirm this as
certain. In the meanwhile, both in this respect and many
others, it will readily be seen how deficient we are in nat-

Newton and the system so generally received at the present day. It is, how-
ever, unjust, as the centre of which Newton so often speaks is not a point with
an active inherent force, but only the result of all the particular and reciprocal
attractions of the different parts of the planet acting upon one spot. It is evi-
dent, that if all these forces were united in this centre, that the sum would
be equal to all their partial effects. — Hd.

51 Since Newton’s discovery of the law of gravitation, we find that the at-
tractive force of the earth must extend to an infinite distance. Bacon himself
alludes to the operation of this attractive force at great distances in the
Instances of the Rod, Aphorism xlv.

194 NOVUM ORGANUM

ural history, since we are forced to have recourse to sup-
positions for examples, instead of ascertained instances.

Again, let the required nature be the discursive power
of the mind. The classification of human reason and ani-
mal instinct appears to be perfectly correct. Yet there are
some instances of the actions of brutes which seem to show
that they, too, can syllogize. Thus it is related, that a
crow, which had nearly perished from thirst in a great
drought, saw some water in the hollow trunk of a tree, but
as it was too narrow for him to get into it, he continued to
throw in pebbles, which made the water rise till he could
drink; and it afterward became a proverb.

Again, let the required nature be vision. The classifi-
cation appears real and certain, which considers light as that
which is originally visible, and confers the power of secing;
and color, as being secondarily visible, and not capable of
being seen without light, so as to appear a mere image or
modification of light. Yet there are instances of alliance in
each respect; aS in snow when in great quantities, and in
the flame of sulphur; the one being a color originally and
in itself light, the other a light verging toward color.”

_ XXXVI. In the fourteenth rank of prerogative in-
stances, we will place the instances of the cross, borrowing
our metaphor from the crosses erected where two roads
meet, to point out the different directions. We are wont
also to call them decisive and judicial instances, and in
some cases instances of the oracle and of command. Their
nature is as follows: When in investigating any nature the
understanding is, as it were, balanced, and uncertain to
which of two or more natures the cause of the required

58 Snow reflects light, but is not a source of light.

NOVUM ORGANUM 195

nature should be assigned, on account of the frequent and
usual concurrence of several natures, the instances of the
cross show that the union of one nature with the required
nature is firm and indissoluble, while that of the other is
unsteady and separable; by which means the question is
decided, and the first 1s received as the cause, while the
other is dismissed and rejected. Such instances, therefore,
afford great light, and are of great weight, so that the course
of interpretation sometimes terminates, and is completed in
them. Sometimes, however, they are found among the
instances already observed, but they are generally new,
being expressly and purposely sought for and applied, and
brought to light only by attentive and active diligence.

For example: let the required nature be the flow and
ebb of the sea, which is repeated twice a day, at intervals
of six hours between each advance and retreat, with some
little difference, agreeing with the motion of the moon. We
have here the following crossways:

This motion must be occasioned either by the advancing
and the retiring of the sea, like water shaken in a basin,
which leaves one side while it washes the other; or by the ris-
ing of the sea from the bottom, and its again subsiding, like
boiling water. But a doubt arises, to which of these causes
we should assign the flow and ebb. If the first assertion be
admitted, it follows, that when there is a flood on one side,
there must at the same time be an ebb on another, and the
question therefore is reduced to this. Now Acosta, and
some others, after a diligent inquiry, have observed that
the flood tide takes place on the coast of Florida, and the
opposite coasts of Spain and Africa, at the same time, as
does also the ebb; and that there is not, on the contrary, a

flood tide at Florida when there is an ebb on the coasts of
Scrence— Vol. 22 —9

196 NOVUM ORGANUM

Spain and Africa. Yet if one consider the subject atten-
tively, this does not prove the necessity of a rising motion,
nor refute the notion of a progressive motion. For the
motion may be progressive, and yet inundate the opposite
shores of a channel at the same time; as if the waters be
forced and driven together from some other quarter, for
instance, which takes place in rivers, for they flow and ebb
toward each bank at the same time, yet their motion is
clearly progressive, being that of the waters from the sea
entering their mouths. So it may happen, that the waters
coming in a vast body from the eastern Indian Ocean are
driven together, and forced into the channel of the Atlan-
tic, and therefore inundate both coasts at once. We must
inquire, therefore, if there be any other channel by which
the waters can at the same time sink and ebb; and the
Southern Ocean at once suggests itself, which is not less
than the Atlantic, but rather broader and more extensive
than is requisite for this effect.

We at length arrive, then, at an instance of the cross,
which is this. If it be positively discovered, that when the
flood sets in toward the opposite coasts of Florida and Spain
in the Atlantic, there is at the same time a flood tide on the
coasts of Peru and the back part of China, in the Southern
Ocean, then assuredly, from this decisive instance, we must
reject the assertion, that the flood and ebb of the sea, about
which we inquire, takes place by progressive motion; for
no other sea or place is left where there can be an ebb. But
this may most easily be learned, by inquiring of the inhab-
itants of Panama and Lima (where the two oceans are sepa-
rated by a narrow isthmus), whether the flood and ebb takes
place on the opposite sides of the isthmus at the same time,
or the reverse. This decision or rejection appears certain,

NOVUM ORGANUM 197

if it be granted that the earth is fixed; but if the earth
revolves, it may perhaps happen, that from the unequal
revolution (as regards velocity) of the earth and the waters
of the sea, there may bea violent forcing of the waters into
a mass, forming the flood, and a subsequent relaxation of
them (when they can no longer bear the accumulation),
forming the ebb. A separate inquiry must be made into
this. Even with this hypothesis, however, it remains
equally true, that there must be an ebb somewhere, at the
same time that there is a flood in another quarter.

Again, let the required nature be the latter of the two
motions we have supposed; namely, that of a rising and
subsiding motion, if it should happen that upon diligent
examination the progressive motion be rejected. We have,
then, three ways before us, with regard to this nature. The
motion, by which the waters raise themselves, and again
fall back, in the floods and ebbs, without the addition of
any other water rolled toward them, must take place in one
of the three following ways: Hither the supply of water
emanates from the interior of the earth, and returns back
again; or there is really no greater quantity of water, but
the same water (without any augmentation of its quantity)
is extended or rarefied, so as to occupy a greater space and
dimension, and again contracts itself; or there is neither an
additional supply nor any extension, but the same waters
(with regard to quantity, density, or rarity) raise themselves
and fall from sympathy, by some magnetic power attracting
and calling them up, as it were, from above. Let us then
(passing over the first two motions) reduce the investiga-
tion to the last, and inquire if there be any such elevation
of the water by sympathy or a magnetic force; and it is evi-
-lent, in the first place, that the whole mass of water being

198 NOVUM ORGANUM

placed inthe trench or cavity of the sea, cannot be raised
at once, because there would not be enough to cover the
bottom, so that if there be any tendency of this kind in the
water to raise itself, yet it would be interrupted and checked
by the cohesion of things, or (as the common expression is)
that there may be no vacuum. ‘The water, therefore, must
rise on one side, and for that reason be diminished and ebb
on another. But it will again necessarily follow that the
magnetic power not being able to operate on the whole,
operates most intensely on the centre, so as to raise the
waters there, which, when thus raised successively, desert
and abandon the sides.”

We at length arrive, then, at an instance of the cross,
which is this: if it be found that during the ebb the surface
of the waters at sea is more curved and round, from the
waters rising in the middle, and sinking at the sides or
coast, and if, during a flood, it be more even and level,
from the waters returning to their former position, then
assuredly, by this decisive instance, the raising of them by
a magnetic force can be admitted; if otherwise, it must be
entirely rejected. It is not difficult to make the exper-
ment (by sounding in straits), whether the sea be deeper
toward the middle in ebbs, than in floods. But it must be
observed, if this be the case, that (contrary to common
opinion) the waters rise in ebbs, and only return to their
former position in floods, so as to bathe and inundate the
coast.

Again, let the required nature be the spontaneous motion
of revolution, and particularly, whether the diurnal motion,
by which the sun and stars appear to us to rise and set, be

5? Bacon’s sagacity here foreshadows Newton’s theory of the tides.

NOVUM ORGANUM 199

areal motion of revolution in the heavenly bodies, or only
apparent in them, and real in the earth. There may be an
instance of the cross of the following nature. If there be
discovered any motion in the ocean from east to west,
though very languid and weak, and if the same motion be
discovered rather more swift in the air (particularly within
the tropics, where it is more perceptible from the circles
being greater). If 1t be discovered also in the low comets,
and be already quick and powerful in them; if it be found
also in the planets, but so tempered and regulated as to be
slower in those nearest the earth, and quicker in those at
the greatest distance, being quickest of all in the heavens,
then the diurnal motion should certainly be considered as
real in the heavens, and that of the earth must be rejected;
for it will be evident that the motion from east to west is
part of the system of the world and universal; since it
is most rapid in the height of the heavens, and gradually
srows weaker, till it stops and is extinguished in rest at
the earth.

Again, let the required nature be that other motion of
revolution, so celebrated among astronomers, which is con-
trary to the diurnal, namely, from west to east—and which
the ancient astronomers assign to the planets, and even to
the starry sphere, but Copernicus «nd his followers to the
earth also—and let it be examined whether any such motion
be found in nature, or it be rather a fiction and hypothesis
for abridging and facilitating calculation, and for promoting
that fine notion of effecting the heavenly motions by perfect
circles; for there is nothing which proves such a motion in
heavenly objects to be true and real, either in a planet’s not
returning in its diurnal motion to the same point of the
starry sphere, or in the pole of the zodiac being different

200 NOVUM ORGANUM

from that of the world, which two circumstances have occa-
sioned this notion. For the first phenomenon is well ac-
counted for by the spheres overtaking or falling behind
each other, and the second by spiral lines; so that the in-
accuracy of the return and declination to the tropics may
be rather modifications of the one diurnal motion than con-
trary motions, or about different poles. And it is most
certain, if we consider ourselves for a moment as part of
the vulgar (setting aside the fictions of astronomers and the
school, who are wont undeservedly to attack the senses in
many respects, and to affect obscurity), that the apparent
motion is such as we have said, a model of which we have
sometimes caused to be represented by wires in a sort of a
machine.

We may take the following instances of the cross upon
this subject. If it be found in any history worthy of credit,
that there has existed any comet, high or low, which has
not revolved in manifest harmony (however irregularly) with
the diurnal motion, then we may decide so far as to allow
such a motion to be possible in nature. But if nothing of
the sort be found, it must be suspected, and recourse must
be had to other instances of the cross.

Again, let the required nature be weight or gravity.
Heavy and ponderous bodies must, either of their own
nature, tend toward the centre of the earth by their peculiar
formation, or must be attracted and hurried by the corporeal
mass of the earth itself, as being an assemblage of similar
bodies, and be drawn to it by sympathy. But if the latter
be the cause, it follows that the nearer bodies approach to
the earth, the more powerfully and rapidly they must be
borne toward it, and the further they are distant, the more
faintly and slowly (as is the case in magnetic attractions),

NOVUM ORGANUM 201

and that this must happen within a given distance; so that
if they be separated at such a distance from the earth that
the power of the earth cannot act upon them, they will
remain suspended like the earth, and not fall at all.”
The following instance of the cross may be adopted.
Take a clock moved by leaden weights,” and another by

60 The error in the text arose from Bacon’s impression that the earth was
immovable. It is evident, since gravitation acts at an infinite distance, that no
such point could be found; and even supposing the impossible point of equilib-
rium discovered, the body could not maintain its position an instant, but would
be hurried, at the first movement of the heavenly bodies, in the direction of the
dominant gravitating power.—£d.

61 Fly clocks are referred to in the text, not pendulum clocks, which were
not known in England till 1662. The former, though clumsy and rude in their
construction, still embodied sound mechanical principles. The comparison of
the effect of a spring with that of a weight in producing certain motions in cer-
tain times on altitudes and in mines, has recently been tried by Professors Airy
and Whewell in Dalcoath mine, by means of a pendulum, which is only a
weight moved by gravity, and a chronometer balance moved and regulated
by a spring. In his thirty-seventh Aphorism, Bacon also speaks of gravity
as an incorporeal power, acting at a distance, and requiring time for its trans-
mission; a consideration which occurred at a later period to Laplace in one
of his most delicate investigations.

Crucial] instances, as Herschel remarks, afford the readiest and securest
means of eliminating extraneous causes, and deciding between the claims of
rival hypotheses; especially when these, running parallel to each other, in the
explanation of great classes of phenomena, at length come to be placed at issue
upon a single fact. A curious example is given by M. Fresnel, as decisive in
his mind of the question between the two great theories on the nature of light,
which, since the time of Newton and Huyghens, have divided philosophers.
When two very clean glasses are laid one on the other, if they be not perfectly
flat, but one or both, in an almost imperceptible degree, convex or prominent,
beautiful and vivid colors will be seen between them; and if these be viewed
through a red glass, their appearance will be that of alternate dark and bright
Stripes. These stripes are formed between the two surfaces in apparent con-
tact, and being applicable on both theories, are appealed to by their respective
supporters as strong confirmatory facts; but there is a difference in one circum-
stance, according as one or other theory is employed to explain them. In the
case of the Huyghenian theory, the intervals between the bright stripes ought
to appear absolutely black, when a prism is used for the upper glass, in the
other half bright. This curious case of difference was tried, as soon as the op-

202 NOVUM ORGANUM

a spring, and let them be set well together, so that one be
neither quicker nor slower than the other; then let the clock
moved by weights be placed on the top of a very high
church, and the other be kept below, and let it be well
observed, if the former move slower than it did, from the
diminished power of the weights. Let the same experiment
be made at the bottom of mines worked to a considerable
depth, in order to see whether the clock move more quickly
from the increased power of the weights. But if this power
be found to diminish at a height, and to increase in subter-
raneous places, the attraction of the corporeal mass of the
earth may be taken as the cause of weight.

Again, let the required nature be the polarity of the
steel needle when touched with the magnet. We have these
two ways with regard to this nature—Hither the touch of
the magnet must communicate polarity to the steel toward
the north and south, or else it may only excite and prepare
it, while the actual motion is occasioned by the presence
of the earth, which Gilbert considers to be the case, and
endeavors to prove with so much labor. The particulars
he has inquired into with such ingenious zeal amount to
this—1. An iron bolt placed for a long time toward the
north and south acquires polarity from this habit, without
the touch of the magnet, as if the earth itself operating but
weakly from its distance (for the surface or outer crust of
the earth does not, in his opinion, possess the magnetic
power), yet, by long continued motion, could supply the
place of the magnet, excite the iron, and convert and change
it when excited. 2. Iron, at a red or white heat, when

posing consequences of the two theories were noted by M. Fresnel, and the
result is stated by him to be decisive in favor of that theory which makes light
to consist in the vibrations of an elastic medium.—<£d.

NOVUM ORGANUM 203

quenched in a direction parallel to the north and south,
also acquires polarity without the touch of the magnet, as
if the parts of iron being put in motion by ignition, and
afterward recovering themselves, were, at the moment of
being quenched, more susceptible and sensitive of the power
emanating from the earth, than at other times, and therefore
as it were excited. But these points, though well observed,
do not completely prove his assertion.

An instance of the cross on this point might be as fol-
lows: Let a small magnetic globe be taken, and its poles
marked, and placed toward the east and west, not toward
the north and south, and let it continue thus. Then let an
untouched needle be placed over it, and suffered to remain
so for six or seven days. Now, the needle (for this is not
disputed), while it remains over the magnet, will leave the
poles of the world and turn to those of the magnet, and
therefore, as long as it remains in the above position, will
turn to the east and west. But if the needle, when removed
from the magnet and placed upon a pivot, be found imme-
diately to turn to the north and south, or even by degrees
to return thither, then the presence of the earth must be
considered as the cause, but if it remains turned as at first,
toward the east and west, or lose its polarity, then that cause
must be suspected, and further inquiry made.

Again, let the required nature be the corporeal substance
of the moon, whether it be rare, fiery, and aérial (as most
of the ancient philosophers have thought), or solid and
dense (as Gilbert and many of the moderns, with some of
the ancients, hold). The reasons for this latter opinion

6 Bacon plainly, from this passage, was inclined to believe that the moon,
like the comets, was nothing more than illuminated vapor. The Newtonian

204 NOVUM ORGANUM

are grounded chiefly upon this, that the moon reflects the
sun’s rays, and that light does not appear capable of being
reflected except by solids. The instances of the cross will
therefore (if any) be such as to exhibit reflection by a rare
body, such as flame, if it be but sufficietly dense. Now,
certainly, one of the reasons of twilight is the reflection®
of the rays of the sun by the upper part of the atmosphere.
We see the sun’s rays also reflected on fine evenings by
streaks of moist clouds, with a splendor not less, but per-
haps more bright and glorious than that reflected from the
body of the moon, and yet it is not clear that those clouds
have formed into a dense body of water. We see, also, that
the dark air behind the windows at night reflects the light
of a candle in the same manner as a dense body would do.™
The experiment should also be made of causing the sun’s
rays to fall through a hole upon some dark and bluish
flame. The unconfined rays of the sun, when falling on
faint flames, do certainly appear to deaden them, and render
them more like white smoke than flames. These are the
only instances which occur at present of the nature of those
of the cross, and better perhaps can be found. But it must
always be observed that reflection is not to be expected
from flame, unless it be of some depth, for otherwise it be-

law, however, has not only established its solidity, but its density and weight.
A sufficient proof of the former is afforded by the attraction of the sea, and the
moon’s motion round the earth.—E£d.

63 Rather the refraction; the sky or air, however, reflects the blue rays
of light. :

64 The polished surface of the glass causes the reflection in this case, and
not the air; and a hat or other black surface put behind the window in the
daytime will enable the glass to reflect distinctly for the same reason, namely.
that the reflected rays are not mixed and confused with those transmitted from
the other side of the window..

NOVUM ORGANUM 205

comes nearly transparent. This at least may be considered
certain, that light is always either received and transmitted
or reflected by an even surface.

Again, let the required nature be the motion of projec-
tiles (such as darts, arrows, and balls) through the air. The
school, in its usual manner, treats this very carelessly, con-
sidering it enough to distinguish it by the name of violent
motion, from that which they term natural, and as far as
regards the first percussion or impulse, satisfies itself by its
axiom, that two bodies cannot exist in one place, or there
would be a penetration of dimensions. With regard to this
nature we have these two crossways—The motion must
arise either from the air carrying the projected body, and
collecting behind it, like a stream behind boats, or the wind
behind straws; or from the parts of the body itself not sup-
porting the impression, but pushing themselves forward in
succession to ease it. Fracastorius, and nearly all those
who have entered into any refined inquiry upon the sub-
ject, adopt the first. Nor can it be doubted that the air
has some effect, yet the other motion is without doubt real,
as is clear from a vast number of experiments. Among
others we may take this instance of the cross, namely, that
a thin plate or wire of iron rather stiff, or even a reed or
pen split in two, when drawn up and bent between the
finger and thumb, will leap forward; for it is clear that
this cannot be attributed to the air’s being collected behind
the body, because the source of motion is in the centre of
the plate or pen, and not in its extremities.

Again, let the required nature be the rapid and power-
ful motion of the explosion of gunpowder, by which such
vast masses are upheaved, and such weights discharged as
we observe in large mines and mortars, there are two cross-

206 - NOVUM ORGANUM

ways before us with regard to this nature. This motion is
excited either by the mere effort of the body expanding
itself when inflamed, or by the assisting effort of the crude
spirit, which escapes rapidly from fire, and bursts violently
from the surrounding flame as from a prison. The school,
however, and common opinion only consider the first effort;
for men think that they are great philosophers when they
assert that flame, from the form of the element, is endowed
with a kind of necessity of occupying a greater space than
the same body had occupied when in the form of powder,
and that thence proceeds the motion in question. In the
meantime they do not observe, that although this may be
true, on the supposition of flame being generated, yet the
generation may be impeded by a weight of sufficient force
to compress and suffocate it, so that no such necessity exists
as they assert. They are right, indeed, in imagining that
the expansion and the consequent emission or removal of
the opposing body, is necessary if flame be once generated,
but such a necessity is avoided if the solid opposing mass
suppress the flame before it be generated; and we in fact
see that flame, especially at the moment of its generation,
is mild and gentle, and requires a hollow space where it
can play and try its force. The great violence of the effect,
therefore, cannot be attributed to this cause; but the truth
is, that the generation of these exploding flames and fiery
blasts arises from the conflict of two bodies of a decidedly
opposite nature—the one very inflammable, as is the sul-
phur, the other having an antipathy to flame, namely, the
crude spirit of the nitre; so that an extraordinary conflict
takes place while the sulphur is becoming inflamed as far
as it can (for the third body, the willow charcoal, merely
incorporates and conveniently unites the two others), and

NOVUM ORGANUM 207

the spirit of nitre is escaping, as far also as it can, and at
the same time expanding itself (for air, and all crude sub-
stances, and water are expanded by heat), fanning thus,
in every direction, the flame of the sulphur by its escape
and violence, just as if by invisible bellows.

Two kinds of instances of the cross might here be used
—the one of very inflammable substances, such as sulphur
and camphor, naphtha and the like, and their compounds,
which take fire more readily and easily than gunpowder if
left to themselves (and this shows that the effort to catch
fire does not of itself produce such a prodigious effect); the
other of substances which avoid and repel flame, such as all
salts; for we see that when they are cast into the fire, the
aqueous spirit escapes with a crackling noise before flame
is produced, which also happens in a less degree in stiff
leaves, from the escape of the aqueous part »efore the oily
part has caught fire. This is more particularly observed in
quicksilver, which is not improperly called mineral water,
and which, without any inflammation, nearly equals the
force of gunpowder by simple explosion and expansion,
and is said, when mixed with gunpowder, to increase its
force.

Again, let the required nature be the transitory nature
of flame and its momentaneous extinction; for to us the
nature of flame does not appear to be fixed or settled, but
to be generated from moment to moment, and to be every
instant extinguished; it being clear that those flames which
continue and last, do not owe their continuance to the same
mass of flame, but to a continued succession of new flame
regularly generated, and that the same identical flame does
not continue. This is easily shown by removing the food
or source of the flame, when it at once goes out. We

208 NOVUM ORGANUM

have the two following crossways with regard to this
nature:

This momentary nature either arises from the cessation
of the cause which first produced it, as in hght, sounds, and
violent motions, as they are termed, or flame may be capa-
ble, by its own nature, of duration, but is subjected to some
violence from the ed natures which surround it, and
is destroyed.

We may therefore er the following instance of the
cross. We see to what a height the flames rise in great
conflagrations; for as the base of the flame becomes more
extensive, its vertex is more lofty. It appears, then, that
the commencement of the extinction takes place at the
sides, where the flame is compressed by the air, and is ill
at ease; but the centre of the flame, which is untouched by
the air and surrounded by flame, continues the same, and
is not extinguished until compressed by degrees by the air
attacking it from the sides. All flame, therefore, is pyra-
midal, having its base near the source, and its vertex
pointed from its being resisted by the air, and not sup-
plied from the source. On the contrary, the smoke, which
is narrow at the base, expands in its ascent, and resembles
an inverted pyramid, because the air admits the smoke, but
compresses the flame; for let no one dream that the lighted
flame is air, since they are clearly heterogeneous. ;

The instance of the cross will be more accurate, if the
experiment can be made by flames of different colors.
Take, therefore, a small metal sconce, and place a lghted
taper in it, then put it in a basin, and pour a small quantity
of spirits of wine round the sconce, so as not to reach its
edge, and light the spirit. Now the flame of the spirit will
be blue, and that of the taper yellow; observe, therefore,

NOVUM ORGANUM 209

whether the latter (which can easily be distinguished from
the former by its color, for flames do not mix immediately,
as liquids do) continue pyramidal, or tend more to a globu-
lar figure, since there is nothing to destroy or compress it.
If the latter result be observed, it must be considered as
settled, that flame continues positively the same, while in-
closed within another flame, and not exposed to the resist-
ing force of the air.

Let this suffice for the instances of the cross. We have
dwelt the longer upon them in order gradually to teach and
accustom mankind to judge of nature by these instances, and
enlightening experiments, and not by probable reasons.°°

65 These instances, which Bacon seems to consider as a great discovery,
are nothing more than disjunctive propositions combined with dilemmas. In
proposing to explain an effect, we commence with the enumeration of the dif-
ferent causes which seem connected with its production; then with the aid of
one or more dilemmas, we eliminate each of the phenomena accidental to its
composition, and conclude with attributing the effect to. the residue. For in-
stance, a certain phenomenon (a) is produced either by phenomenon (B) or phe-
nomenon (C); but c cannot be the cause of a, for it is found in D, E, F, neither
of which are connected with a. Then the true cause of phenomenon (a) must
be phenomenon (B).

This species of reasoning is liable to several paralogisms, against which
Bacon has not guarded his readers, from the very fact that he stumbled into
them unwittingly himself. The two principal ones are false exclusions and
defective enumerations. Bacon, in his survey of the causes which are able
to concur in producing the phenomena of the tides, takes no account of the
periodic melting of the Polar ice, or the expansion of water by the solar heat;
nor does he fare better in his exclusions. For the attraction of the planets and
the progression and retrograde motion communicated by the earth’s diurnal revo-
lution, can plainly affect the sea together, and have a simultaneous influence
on its surface.

Bacon is hardly just or consistent in his censure of Ramus; the end of
whose dichotomy was only to render reasoning by dilemma, and crucial
instances, more certain in their results, by reducing the divisions which
composed their parts to two sets of contradictory propositions. The affirm-
ative or negative of one would then necessarily have led to the acceptance
or rejection of the other.—L£d.

210 NOVUM ORGANUM

XXXVII. We will treat of the instances of divorce as
the fifteenth of our prerogative instances. They indicate
the separation of natures of the most common occurrence.
They differ, however, from those subjoined to the accom-
panying instances; for the instances of divorce point out
the separation of a particular nature from some concrete
substance with which it is usually found in conjunction,
while the hostile instances point out the total separation of
one nature from another. They differ, also, from the in-
stances of the cross, because they decide nothing, but only
inform us that the one nature is capable of being separated
from the other. They are of use in exposing false forms,
and dissipating hasty theories derived from obvious facts;
so that they add ballast and weight, as it were, to the
understanding.

For instance, let the acquired natures be those four
which Telesius terms associates, and of the same family,
namely, heat, light, rarity, and mobility, or promptitude
to motion; yet many instances of divorce can be discovered
between them. Air is rare and easily moved, but neither
hot nor light; the moon is light but not hot; boiling water
is warm but not light; the motion of the needle in the com-
pass is swift and active, and yet its substance is cold, dense,
and opaque; and there are many similar examples.

Again, let the required natures be corporeal nature and
natural action. The latter appears incapable of subsisting
without some body, yet may we, perhaps, even here find an
instance of divorce, as in the magnetic motion, which draws
the iron to the magnet, and heavy bodies to the globe of the
earth; to which we may add other actions which operate at
a distance. For such action takes place in time, by distinct
moments, not in an instant; and in space, by regular de-

NOVUM ORGANUM 217

grees and distances. There is, therefore, some one moment
of time and some interval of space, in which the power or
action is suspended between the two bodies creating the mo-
tion. Our consideration, then, is reduced to this, whether
the bodies which are the extremes of motion prepare or alter
the intermediate bodies, so that the power advances from
one extreme to the other by succession and actual contact,
and in the meantime exists in some intermediate body; or
whether there exists in reality nothing but the bodies, the
power, and the space? In the case of the rays of light,
sounds, and heat, and some other objects which operate at
a distance, it is indeed probable that the intermediate
bodies are prepared and altered, the more so because a
qualified medium is required for their operation. But the
magnetic or attractive power admits of an indifferent me-
dium, and itis not impeded in any. Butif that power or
action is independent of the intermediate body, it follows
that it is a natural power or action existing in a certain time
and space without any body, since it exists neither in the
extreme nor in the intermediate bodies. Hence the mag-
netic action may be taken as an instance of divorce of cor-
poreal nature and natural action; to which we may add, as
a corollary and an advantage not to be neglected, that it
may be taken as a proof of .essence and substance being
separate and incorporeal, even by those who philosophize
according to the senses. For if natural power and action
emanating from a body can exist at any time and place
entirely without any body, it is nearly a proof that it can
also emanate originally from an incorporeal substance; for
a corporeal nature appears to be no less necessary for sup-
porting and conveying, than for exciting or generating nat-
ural action.

212 NOVUM ORGANUM

XXXVIII. Next follow five classes of instances which
we are wont to call by the general term of instances of the
lamp, or of immediate information. They are such as assist
the senses; for since every interpretation of nature sets out
from the senses, and leads, by a regular fixed and well-
established road, from the perceptions of the senses to those
of the understanding (which are true notions and axioms),
it necessarily follows, that in proportion as the representa-
tives or ministerings of the senses are more abundant and
accurate, everything else must be more easy and successful.

The first of these five sets of instances of the lamp,
strengthen, enlarge, and correct the immediate operations
of the senses; the second reduce to the sphere of the senses
“such matters as are beyond it; the third indicate the con-
tinued process or series of such things and motions, as for
the most part are only observed in their termination, or in
periods; the fourth supply the absolute wants of the senses;
the fifth excite their attention and observation, and at the
same time limit the subtilty of things. We will now pro-
ceed to speak of them singly.

XXXIX. In the sixteenth rank, then, of prerogative
instances, we will place the instances of the door or gate,
by which name we designate such as assist the immediate
action of the senses. It is obvious, that sight holds the
first rank among the senses, with regard to information,
for which reason we must seek principally helps for that
sense. These helps appear to be threefold, either to enable
it to perceive objects not naturally seen, or to see them from
a greater distance, or to see them more accurately and dis-
tinctly.

We have an example of the first (not to speak of spec-
tacles and the like, which only correct and remove the in-

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firmity of a deficient sight, and therefore give no further
information) in the lately invented microscopes, which ex-
hibit the latent and invisible minutiz of substances, and
their hidden formation and motion, by wonderfully in-
creasing their apparent magnitude. By their assistance we
behold with astonishment the accurate form and outline
of a flea, moss, and animalcule, as well as their previously
invisible color and motion. It is said, also, that an ap-
parently straight line, drawn with a pen or pencil, is dis-
covered by such a microscope to be very uneven and curved,
because neither the motion of the hand, when assisted by
a ruler, nor the impression of ink or color, are really regu-
lar, although the irregularities are so minute as not to be
perceptible without the assistance of the microscope. Men
have (as is usual in new and wonderful discoveries) added
a superstitious remark, that the microscope sheds a lustre
on the works of nature, and dishonor on those of art, which
only means that the tissue of nature is much more delicate
than that of art. For the microscope is only of use for
minute objects, and Democritus, perhaps, if he had seen
it, would have exulted in the thought of a means being
discovered for seeing his atom, which he affirmed to be
entirely invisible. But the inadequacy of these micro-
scopes, for the observation of any but the most minute
bodies, and even of those if parts of a larger body, destroys
their utility; for if the invention could be extended to
greater bodies, or the minute parts of greater bodies, so
that a piece of cloth would appear like a net, and the
latent minutis and irregularities of gems, liquids, urine,
blood, wounds, and many other things could be rendered
visible, the greatest advantage would, without doubt, be
derived.

214 NOVUM ORGANUM

We have an instance of the second kind in the telescope,
discovered by the wonderful exertions of Galileo; by the
assistance of which a nearer intercourse may be opened (as
by boats or vessels) between ourselves and the heavenly
objects. For by its aid we are assured that the Milky Way
is but a knot or constellation of small stars, clearly defined
and separate, which the ancients only conjectured to be the
case; whence it appears to be capable of demonstration, that
the spaces of the planetary orbits (as they are termed) are
not quite destitute of other stars, but that the heaven begins
to glitter with stars before we arrive at the starry sphere,
although they may be too small to be visible without the
telescope. By the telescope, also, we can behold the revolu-
tions of smaller stars round Jupiter, whence it may be con-
jectured that there are several centres of motion among the
stars. By its assistance, also, the irregularity of light and
shade on the moon’s surface is more clearly observed and
determined, so as to allow of a sort of selenography.” By
the telescope we see the spots in the sun, and other similar
phenomena; all of which are most noble discoveries, as far
as credit can be safely given to demonstrations of this
nature, which are on this account very suspicious, namely,
that experiment stops at these few, and nothing further has
yet been discovered by the same method, among objects
equally worthy of consideration.

We have instances of the third kind in measuring-rods,
astrolabes, and the like, which do not enlarge, but correct
and guide the sight. If there be other instances which assist

66 Pére Shenier first pointed out the spots on the sun’s disk, and by the
marks which they afforded him, computed its revolution to be performed in
twenty-five days and some hours.—d.

NOVUM ORGANUM 215

the other senses in their immediate and individual action,
yet if they add nothing further to their information they
are not apposite to our present purpose, and we have there-
fore said nothing of them.

XL. In the seventeenth rank of prerogative instances
we will place citing instances (to borrow a term from the
tribunals), because they cite those things to appear, which
have not yet appeared. We are wont also to call them in-
voking instances, and their property is that of reducing to
the sphere of the senses objects which do not immediately
fall within it.

Objects escape the senses either from their distance, or
the intervention of other bodies, or because they are not
calculated to make an impression upon the senses, or be-
cause they are not in sufficient quantity to strike the senses,
or because there is not sufficient time for their acting upon
the senses, or because the impression is too violent, or
because the senses are previously filled and possessed by
the object, so as to leave no room for any new motion.
These remarks apply principally to sight, and next to
touch, which two senses act extensively in giving informa-
tion, and that too upon general objects, while the remaining
three inform us only, as it were, oy their immediate action,
and as to specific objects.

There can be no reduction to the sphere of the senses
in the first case, unless in the place of the object, which
cannot be perceived on account of the distance, there be
added or substituted some other object, which can excite
and strike the sense from a greater distance, as in the com-
munication of intelligence by fires, bells, and the like.

In the second case we effect this reduction by rendering
those things which are concealed by the interposition of

216 NOVUM ORGANUM

other bodies, and which cannot easily be laid open, evident
to.the senses by means of that which lies at the surface,
or proceeds from the interior; thus the state of the body
is judged of by the pulse, urine, etc.

The third and fourth cases epply to many subjects, and
the reduction to the sphere of the senses must be obtained
from every quarter in the investigation of things. There
are many examples. It is obvious that air, and spirit, and
the like, whose whole substance is extremely rare and deli-
cate, can neither be seen nor touched—a reduction, there-
fore, to the senses becomes necessary in every investigation
relating to such bodies.

Let the required nature, therefore, be the action and
motion of the spirit inclosed in tangible bodies; for every
tangible body with which we are acquainted contains an
invisible and intangible spirit, over which it is drawn, and
which it seems to clothe. This spirit being emitted from
a tangible substance, leaves the body contracted and dry;
when retained, it softens and melts it; when neither wholly
emitted nor retained, it models it, endows it with limbs,
assimilates, manifests, organizes it, and the like. All these
points are reduced to the sphere of the senses by manifest
Cicets

For in every tangible and inanimate body the inclosed
spirit at first increases, and as it were feeds on the tangible
parts which are most open and prepared for it; and when
it has digested and modified them, and turned them into
spirit, it escapes with them. This formation and increase
of spirit is rendered sensible by the diminution of weight;
for in every desiccation something is lost in quantity, not
only of the spirit previously existing in the body, but of
the body itself, which was previously tangible, and has

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been recently changed, for the spirit itself has no weight.
The departure or emission of spirit is rendered sensible in
the rust of metals, and other putrefactions of a like nature,
which stop before they arrive at the rudiments of life, which
belong to the third species of process.*’ In compact bodies
the spirit does not find pores and passages for its escape,
and is therefore obliged to force out, and drive before it,
the tangible parts also, which consequently protrude, whence
arises rust and the like. The contraction of the tangible
parts, occasioned by the emission of part of the spirit
(whence arises desiccation), is rendered sensible by the in-
creased hardness of the substance, and still more by the
fissures, contractions, shrivelling, and folds of the bodies
thus produced. For the parts of wood split and contract,
skins become shrivelled, and not only that, but, if the
spirit be emitted suddenly by the heat of the fire, be-
come so hastily contracted as to twist and roll them-
selves up.

On the contrary, when the spirit is retained, and yet ex-
panded and excited by heat or the like (which happens in
solid and tenacious bodies), then the bodies are softened,
as in hot iron; or flow, as in metals; or melt, as in gums,
wax, and the like. The contrary effects of heat, therefore
(hardening some substances and melting others), are easily
reconciled, because the spirit is emitted in the former, and

67 Rust is now well known to be a chemical combination of oxygen with
the metal, and the metal when rusty acquires additional weight. His theory
as to the generation of animals, is deduced from the erroneous notion of the
possibility of spontaneous generation (as it was termed). See the next para-
graph but one.

68 **Limus ut hic durescit, et haec ut cera liquescit
Uno eodemque igni.’’—Virg. Eel. viii.

218 NOVUM ORGANUM

agitated and retained in the latter; the latter action is that
of heat and the spirit, the former that of the tangible parts
themselves, after the spirit’s emission.

But when the spirit is neither entirely retained nor
emitted, but only strives and exercises itself, within its
limits, and meets with tangible parts, which obey and
readily follow it wherever it leads them, then follows the
formation of an organic body, and of limbs, and the other
vital actions of vegetables and animals. These are rendered
sensible chiefly by diligent observation of the first begin-
nings, and rudiments or effects of life in animalcule sprung
from putrefaction, as in the eggs of ants, worms, mosses,
frogs after rain, ete. Both a mild heat and a pliant sub-
stance, however, are necessary for the production of life,
in order that the spirit may neither hastily escape, nor be
restrained by the obstinacy of the parts, so as not to be able
to bend and model them like wax.

Again, the difference of spirit which is important and
of effect in many points (as unconnected spirit, branching
spirit, branching and cellular spirit, the first of which is
that of all inanimate substances, the second of vegetables,
and the third of animals), is placed, as it were, before the
eyes by many reducing instances.

Again, it is clear that the more refined tissue and con-
formation of things (though forming the whole body of
visible or tangible objects) are neither visible nor tangible.
Our information, therefore, must here also be derived from
reduction to the sphere of the senses. But the most radical
and primary difference of formation depends on the abun-
dance or scarcity of matter within the same space or dimen-
sions. For the other formations which regard the dissimi-
larity of the parts contained in the same body, and their

NOVUM ORGANUM 219

collocation and position, are secondary in comparison with
the former.

Let the required nature then be the expansion or cohe-
rence of matter in different bodies, or the quantity of matter
relative to the dimensions of each. For there is nothing in
nature more true than the twofold proposition—that nothing
proceeds from nothing and that nothing is reduced to noth-
ing, but that the quantum, or sum total of matter, is con-_
stant, and is neither increased nor diminished. Nor is it
less true, that out of this given quantity of matter, there
is a greater or less quantity, contained within the same
space or dimensions according to the difference of bodies;
as, for instance, water contains more than air. So that if
any one were to assert that a given content of water can
be changed into an equal content of air, it is the same as
if he were to assert that something can be reduced into
nothing. On the contrary, if any one were to assert that
a given content of air can be changed into an equal content
of water, it is the same as if he were to assert that some-
thing can proceed from nothing. From this abundance or
scarcity of matter are properly derived the notions of
density and rarity, which are taken in various and pro-
miscuous senses.

This third assertion may be considered as being also
sufficiently certain; namely, that the greater or less quan-
tity of matter in this or that body, may, by comparison, be
reduced to calculation, and exact, or nearly exact, propor-
tion. Thus, if one should say that there is such an accumu-
lation of matter in a given quanity of gold, that it would
require twenty-one times the quantity in dimension of spir-
its of wine, to make up the same quantity of matter, it

would not be far from the truth.
SCIENGE—— Vol. 22 —10

220 NOVUM ORGANUM

The accumulation of matter, however, and its relative
quantity, are rendered sensible by weight; for weight is
proportionate to the quantity of matter, as regards the parts
of a tangible substance, but spirit and its quantity of mat-
ter are not to be computed by weight, which spirit rather
diminishes than augments.

We have made a tolerably accurate table of weight, in
which we have selected the weights and size of all the
metals, the principal minerals, stones, liquids, oils, and
many other natural and artificial bodies: a very useful pro-
ceeding both as regards theory and practice, and which is
capable of revealing many unexpected results. Nor is this
of little consequence, that it serves to demonstrate that the
whole range of the variety of tangible bodies with which
we are acquainted (we mean tolerably close, and not
spongy, hollow bodies, which are for a considerable part
filled with air), does not exceed the ratio of one to twenty-
one. So limited is nature, or at least that part of it to
which we are most habituated.

We have also thought it deserving our industry, to try
if we could arrive at the ratio of intangible or pneumatic
bodies to tangible bodies, which we attempted by the fol-
lowing contrivance. We took a vial capable of containing
about an ounce, using a small vessel in order to effect the
subsequent evaporation with less heat. We filled this vial,
almost to the neck, with spirits of wine, selecting it as the
tangible body which, by our table, was the rarest, and con-
tained a less quantity of matter in a given space than all
other tangible bodies which are compact and not hollow.
Then we noted exactly the weight of the liquid and vial.
We next took a bladder, containing about two pints, and
squeezed all the air out of it, as completely as possible, and

NOVUM ORGANUM Jit

until the sides of the bladder met. We first, however,
rubbed the bladder gently with oil, so as to make it air-
tight, by closing its pores with the oil. We tied the blad-
der tightly round the mouth of the vial, which we had in-
serted in it, and with a piece of waxed thread to make it
fit better and more tightly, and then placed the vial on
some hot coals in a brazier. The vapor or steam of the
spirit, dilated and become aériform by the heat, gradually
swelled out the bladder, and stretched it in every direction
like a sail. As soon as that was accomplished, we removed
the vial from the fire and placed it on a carpet, that it
might not be cracked by the cold; we also pricked the
bladder immediately, that the steam might not return to a
liquid state by the cessation of heat, and confound the pro-
portions. We then removed the bladder, and again took
the weight of the spirit which remained; and so calculated
the quantity which had been converted into vapor, or an
aériform shape, and then examined how much space had
been occupied by the body in its form of spirits of wine in
the vial, and how much, on the other hand, had been occu-
pied by it in its aériform shape in the bladder, and sub-
tracted the results; from which it was clear that the
body, thus converted and changed, acquired an expansion
of one hundred times beyond its former bulk.

Again, let the required nature be heat or cold, of such
a degree as not to be sensible from its weakness. They are
rendered sensible by the thermometer, as we described it
above;® for the cold and heat are not actually perceived
by the touch, but heat expands and cold contracts the air.
Nor, again, is that expansion or contraction of the air in

69 See Table of Degrees, No. 38.

222 NOVUM ORGANUM

itself visible, but the air when expanded depresses the
water, and when contracted raises it, which is the first
reduction to sight.

Again, let the required nature be the mixture of bodies;
namely, how much aqueous, oleaginous or spirituous, ashy
or salt parts they contain; or, as a particular example, how
much butter, cheese, and whey there is in milk, and the
like. These things are rendered sensible by artificial and
skilful separations in tangible substances; and the nature
of the spirit in them, though not immediately perceptible,
is nevertheless discovered by the various motions and
efforts of bodies. And, indeed, in this branch men have
labored hard in distillations and artificial separations, but
with little more success than in their other experiments
now in use; their methods being mere guesses and blind
attempts, and more industrious than intelligent; and what
is worst of all, without any imitation or rivalry of nature,
but rather by violent heats and too energetic agents, to the
destruction of any delicate conformation, in which princi-
pally consist the hidden virtues and sympathies. Nor do
men in these separations ever attend to or observe what we
have before pointed out; namely, that in attacking bodies
by fire, or other methods, many qualities are superinduced
by the fire itself, and the other bodies used to effect the
separation, which were not originally in the compound.
Hence arise most extraordinary fallacies; for the mass of
vapor which is emitted from water by fire, for instance, did
not exist as vapor or air in the water, but is chiefly created
by the expansion of the water by the heat of the fire.

So, in general, all delicate experiments on natural or
artificial bodies, by which the genuine are distinguished
from the adulterated, and the better from the more com-

NOVUM ORGANUM Zo

mon, should be referred to this division; for they bring that
which is not the object of the senses within their sphere.
They are therefore to be everywhere diligently sought after.

With regard to’the fifth cause of objects escaping our
senses, it is clear that the action of the sense takes place by
motion, and this motion is time. If, therefore, the motion
of any body be either so slow or so swift as not to be pro-
portioned to the necessary momentum which operates on the
senses, the object 1s not perceived at all; as in the motion of
the hour hand, and that, again, of a musket-ball. The mo-
tion which is imperceptible by the senses from its slowness,
is readily and usually rendered sensible by the accumula-
tion of motion; that which is imperceptible from its veloc-
ity, has not as yet been well measured; it is necessary, how-
ever, that this should be done in some cases, with a view to
a proper investigation of nature.

The sixth case, where the sense is impeded by the power
of the object, admits of a reduction to the sensible sphere,
either by removing the object to a greater distance, or by
deadening its effects by the interposition of a medium,
which may weaken and not destroy the object; or by the
admission of its reflection where the direct impression is too
strong, as that of the sun in a basin of water.

The seventh case, where the senses are so overcharged
with the object as to leave no further room, scarcely occurs
except in the smell or taste, and is not of much consequence
as regards our present subject. Let what we have said,
therefore, suffice with regard to the reduction to the sensi-
ble sphere of objects not naturally within its compass.

Sometimes, however, this reduction is not extended to
the senses of man, but to those of some other animal, whose
senses, In some points, exceed those of man; as (with regard

224. NOVUM ORGANUM

to some scents) to that of the dog, and with regard to light
existing imperceptibly in the air, when not illuminated from
any extraneous source, to the sense of the cat, the owl, and
other animals which see by night. For Telesius has well
observed, that there appears to be an original portion of
light even in the air itself,” although but slight and meagre,
and of no use for the most part to the eyes of men, and
those of the generality of animals; because those animals
to whose senses this light is proportioned can see by night,
which does not, in all probability, proceed from their see-
ing either without light or by any internal light.

Here, too, we would observe, that we at present discuss
only the wants of the senses, and their remedies; for their
deceptions must be referred to the inquiries appropriated
to the senses, and sensible objects; except that important
deception, which makes them define objects in their rela-
tion to man, and not in their relation to the universe, and
which is’ only corrected by universal reasoning and phi-
losophy.”

XLI. In the eighteenth rank of prerogative instances we
will class the instances of the road, which we are also wont
to call itinerant and jointed instances. They are such as
indicate the gradually continued motions of nature. This

7 Riecati, and all modern physicists, discover some portion of light in
every body, which seems to confirm the passage in Genesis that assigns to this
substance priority in creation.—-—£d.

71 As instanees of this kind, which the progress of science since the time
of Bacon affords, we may cite the air-pump and the barometer, for manifesting
the weight and elasticity of air: the measurement of the velocity of light, by
means of the occultation of Jupiter’s satellites and the aberration of the fixed
stars: the experiments in electricity and galvanism, and in the greater part
of pneumatic chemistry. In all these cases scientific facts are elicited, which
sense could never have revealed to us.—d.

NOVUM ORGANUM 225

species of instances escapes rather our observation than our
senses; for men are wonderfully indolent upon this subject,
consulting nature in a desultory manner, and at periodic
intervals, when bodies have been regularly finished and
completed, and not during her work. But if any one were
desirous of examining and contemplating the talents and
industry of an artificer, he would not merely wish to see
the rude materials of his art, and then his work when fin-
ished, but rather to be present while he is at labor, and
proceeding with his work. Something of the same kind
should be done with regard to nature. For instance, if any
one investigate the vegetation of plants, he should observe
from the first sowing of any seed (which can easily be done,
by pulling up every day seeds which have been two, three,
or four days in the ground, and examining them diligently),
how and when the seed begins to swell and break, and be
filled, as it were, with spirit; then how it begins to burst
the bark and push out fibres, raising itself a little at the
same time, unless the ground be very stiff; then how it
pushes out these fibres, some downward for roots, others
upward for the stem, sometimes also creeping laterally, if
it find the earth open and more yielding on one side, and
the like. The same should be done in observing the hatch-
ing of eggs, where we may easily see the process of anima-
tion and organization, and what parts are formed of the
yolk, and what of the white of the egg, and the like. The
same may be said of the inquiry into the formation of ani-
mals from putrefaction; for it would not be so humane to —
inquire into perfect and terrestrial animals, by cutting the
foetus from the womb; but opportunities may perhaps be
offered of abortions, animals killed in hunting, and the like.
Nature, therefore, must, as it were, be watched, as being

226 NOVUM ORGANUM

more easily observed by night than by day: for contempia-
tions of this kind may be considered as carried on by
night, from the minuteness and perpetual burning of our
watch-lght.

The same must be attempted with inanimate objects,
which we have ourselves done by inquiring into the open-
ing of liquids by fire. For the mode in which water ex-
pands is different from that observed in wine, vinegar, or
verjuice, and very different, again, from that observed in
milk and oil, and the like; and this was easily seen by boil-
ing them with slow heat, in a glass vessel, through which
the whole may be clearly perceived. But we merely men-
tion this, intending to treat of it more at large and more
closely when we come to the discovery of the latent process;
for it should always be remembered that we do not here
treat of things themselves, but merely propose examples.”

XLII. In the nineteenth rank of prerogative instances
we will class supplementary or substitutive instances, which
we are also wont to call instances of refuge. They are such
as supply information, where the senses are entirely defi-
cient, and we therefore have recourse to them when appro-
priate instances cannot be obtained. This substitution is

7” The itinerant instances, as well as frontier instances, are cases in which
we are enabled to trace the general law of continuity which seems to pervade
all nature, and which has been aptly embodied in the sentence, “‘natura non
agit per saltum.’’ The pursuit of this law into phenomena where its applica-
tion is not at first sight obvious, has opened a mine of physical discovery, and
led us to perceive an intimate connection between facts which at first seemed
hostile to each other. For example, the transparency of gold-leaf, which per-
mits a bluish-green light to pass through it, is a frontier instance between
transparent and opaque bodies, by exhibiting a body of the glass generally
regarded the most opaque in nature, as still possessed of some slight degree
of transparency. It thus proves that the quality of opacity is not a contrary
or antagonistic quality to that of transparency, but only its extreme lowest
degree.

NOVUM ORGANUM DAA

twofold, either by approximation or by analogy. For in-
stance, there is no known medium which entirely prevents
the effect of the magnet in attracting iron—neither gold,
nor silver, nor stone, nor glass, wood, water, oil, cloth,
or fibrous bodies, air, flame, or the like. Yet by accurate
experiment, a medium may perhaps be found which would
deaden its effect, more than another comparatively and in
degree; as, for instance, the magnet would not perhaps
attract iron through the same thickness of gold as of air,
or the same quantity of ignited as of cold silver, and so on;
for we have not ourselves made the experiment, but it will
suffice as an example. Again, there is no known body
which is not susceptible of heat, when brought near the
fire; yet air becomes warm much sooner than stone. These
are examples of substitution by approximation.
Substitution by analogy is useful, but less sure, and
therefore to be adopted with some judgment. It serves to
reduce that which is not the object of the senses to their
sphere, not by the perceptible operations of the impercep-
tible body, but by the consideration of some similar per-
ceptible body. For instance, let the subject for inquiry be
the mixture of spirits, which are invisible bodies. There
appears to be some relation between bodies and their sources
or support. Now, the source of flame seems to be oil and
fat; that of air, water, and watery substances; for flame
increases over the exhalation of oil, and air over that of
water. One must therefore consider the mixture of oil and
water, which is manifest to the senses, since that of air and
flame in general escapes the senses. But oil and water mix
very imperfectly by composition or stirring, while they are
exactly and nicely mixed in herbs, blood, and the parts of
animals. Something similar, therefore, may take place in

228 NOVUM ORGANUM

the mixture of flame and air in spirituous substances, not
bearing mixture very well by simple collision, while they
appear, however, to be well mixed in the spirits of plants
and animals. |

Again, if the inquiry do not relate to perfect mixtures of
spirits, but merely to their composition, as whether they
easily incorporate with each other, or there be rather (as an
example) certain winds and exhalations, or other spiritual
bodies, which do not mix with common air, but only adhere
to and float in it in globules and drops, and are rather
broken and pounded by the air, than received into, and
incorporated with it; this cannot be perceived in common
air, and other aériform substances, on account of the rarity
of the bodies, but an image, as it were, of this process may
be conceived in such hquids as quicksilver, oil, water, and
even air, when broken and dissipated it ascends in small
portions through water, and also in the thicker kinds of
smoke; lastly, in dust, raised and remaining in the air, in
all of which there is no incorporation: and the above repre-
sentation in this respect is not a bad one, if it be first dili-
gently investigated, whether there can be such a difference
of nature between spirituous substances, as between liquids,
for then these images might conveniently be substituted by
analogy.

And although we have observed of these supplementary
instances, that information is to be derived from them, when
appropriate instances are wanting, by way of refuge, yet we
would have it understood, that they are also of great use,
when the appropriate instances are at hand, in order to con-
firm the information afforded by them; of which we will
speak more at length, when our subject leads us, in due
course, to the support of induction.

NOVUM ORGANUM 229

XLII. In the twentieth rank of prerogative instances
we will place lancing instances, which we are also wont
(but for a different reason) to call twitching instances. We
adopt the latter name, because they twitch the understand-
ing, and the former because they pierce nature, whence we
style them occasionally the instances of Democritus.”
They are such as warn the understanding of the admir-
able and exquisite subtilty of nature, so that it becomes
roused and awakened to attention, observation, and proper
Inquiry; as, for instance, that a little drop of ink should
be drawn out into so many letters; that silver merely gilt
on its surface should be stretched to such a length of gilt
wire; thata httle worm, such as you may find on the skin,
should possess both a spirit and a varied conformation of
its parts; that a little saffron should imbue a whole tub
of water with its color; that a little musk or aroma should
imbue a much greater extent of air with its perfume; that
a cloud of smoke should be raised by a little incense; that
such accurate differences of sounds as articulate words
should be conveyed in all directions through the air, and
even penetrate the pores of wood and water (though they
become much weakened), that they should be, moreover,
reflected, and that with such distinctness and velocity; that
light and color should for such an extent and so rapidly
pass through solid bodies, such as glass and water, with
so great and so exquisite a variety of images, and should
be refracted and reflected; that the magnet should attract
through every description of body, even the most compact;
but (what is still more wonderful) that in all these cases the
action of one should not impede that of another in acommon

% Alluding to his theory of atoms.

230 NOVUM ORGANUM

medium, such as air; and that there should be borne through
the air, at the same time, so many images of visible objects,
so many impulses of articulation, so many different per-
fumes, as of the violet, rose, etc., besides cold and _ heat,
and magnetic attractions; all of them, I say, at once, with-
out any impediment from each other, as if each had its paths
and peculiar passage set apart for it, without infringing
against or meeting each other.

To these lancing instances, however, we are wont, not
without some advantage, to add those which we call the
limits of such instances. Thus, in the cases we have
pointed out, one action does not disturb or impede an-
other of a different nature, yet those of a similar nature
subdue and extinguish each other; as the hght of the sun
does that of the candle, the sound of a cannon that of the
voice, a strong perfume a more delicate one, a powerful heat
amore gentle one, a plate of iron between the magnet and
other iron the effect of the magnet. But the proper place
for mentioning these will be also among the supports-of
induction.

XLIV. We have now spoken of the instances which
assist the senses, and which are principally of service as
regards information; for information begins from the senses.
But our whole labor terminates in practice, and as the
former is the beginning, so is the latter the end of our
subject. The following instances, therefore, will be those
which are chiefly useful in practice. They are compre-
hended in two classes, and are seven in number. We call
them all by the general name of practical instances. Now
there are two defects in practice, and as many divisions of
important instances. Practice is either deceptive or too
laborious. It is generally deceptive (especially after a dili- |

NOVUM ORGANUM 231

gent examination of natures), on account of the power and
actions of bodies being ill defined and determined. Now
the powers and actions of bodies are defined and determined
either by space or by time, or by the quantity at a given
period, or by the predominance of energy; and if these four
circumstances be not well and diligently considered, the
sciences may indeed be beautiful in theory, but are of no
effect in practice. We call the four instances referred to
this class, mathematical instances and instances of measure.

Practice is laborious either from the multitude of instru-
ments, or the bulk of matter and substances requisite for
any given work. Those instances, therefore, are valuable,
which either direct practice to that which is of most conse-
quence to mankind, or lessen the number of instruments
or of matter to be worked upon. We assign to the three
instances relating to this class, the common name of pro-
pitious or benevolent instances. We will now separately
discuss these seven instances, and conclude with them that
part of our work which relates to the prerogative or illus-
trious instances.

XLV. In the twenty-first rank of prerogative instances
we will place the instances of the rod or rule, which we are
also wont to call the instances of completion or non ulird.
For the powers and motions of bodies do not act and take
effect through indefinite and accidental, but through limited
and certain spaces; and it is of great importance to practice
that these should be understood and noted in every nature
which is investigated, not only to prevent deception, but
to render practice more extensive and efficient. For it is
sometimes possible to extend these powers, and bring the
Cistance, as it were, nearer, as in the example of telescopes.

Many powers act and take effect only by actual touch, as

2382 NOVUM ORGANUM

in the percussion of bodies, where the one does not remove
the other, unless the impelling touch the impelled body.
External applications in medicine, as ointment and plasters,
do not exercise their efficacy except when in contact with
the body. Lastly, the objects of touch and taste only strike
those senses when in contact with their organs.

Other powers act at a distance, though it be very small,
of which but few have as yet been noted, although there
be more than men suspect; this happens (to take everyday
instances) when amber or jet attracts straws, bubbles dis-
solve bubbles, some purgative medicines draw humors from
above, and the like. The magnetic power by which iron
and the magnet, or two magnets, are attracted together,
acts within a definite and narrow sphere, but if there be
any magnetic power emanating from the earth a little below
its surface, and affecting the needle in its polarity, it must
act at a great distance.

Again, if there be any magnetic force which acts by sym-
pathy between the globe of the earth and heavy bodies, or
between that of the moon and the waters of the sea (as seems
most probable from the particular floods and ebbs which
occur twice in the month), or between the starry sphere and
the planets, by which they are summoned and raised to
their apogees, these must all operate at very great dis-
tances. ™

74 Observe the approximation to Newton’s theory. The same notion re-
peated still more clearly in the ninth motion. Newton believed that the
planets might so conspire as to derange the earth’s annual revolution, and to
elongate the line of the apsides and ellipsis that the earth describes in its an-
nual revolution round the sun. In the supposition that all the planets meet
on the same straight line, Venus and Mercury on one side of the sun, and the
earth, moon, Mars, Jupiter and Saturn on the side diametrically opposite; then
Saturn would attract Jupiter, Jupiter Mars, Mars the moon, which must in its

NOVUM ORGANUM 233

Again, some conflagrations and the kindling of flames
take place at very considerable distances with particular
substances, as they report of the naphtha of Babylon.
Heat, too, insinuates itself at wide distances, as does also
cold, so that the masses of ice which are broken off and
float upon the Northern Ocean, and are borne through the
Atlantic to the coast of Canada, become perceptible by
the inhabitants, and strike them with cold from a distance.
Perfumes also (though here there appears to be always some
corporeal emission) act at remarkable distances, as is experi-
enced by persons sailing by the coast of Florida, or parts
of Spain, where there are whole woods of lemons, oranges,
and other odoriferous plants, or rosemary and marjoram
bushes, and the like. lastly, the rays of light and the im-
pressions of sound act at extensive distances.

Yet all these powers, whether acting at a small or great
distance, certainly act within definite distances, which are
well ascertained by nature, so that there is a limit depend-
ing either on the mass or quantity of the bodies, the vigor
or faintness of the powers, or the favorable or impeding na-
ture of the medium, all of which should be taken into

-_—

turn attract the earth in proportion to the force with which it was drawn out
of its orbit. The result of this combined action on our planet would elongate
its ecliptic orbit, and so far draw it from the source of heat, as to produce an
intensity of cold destructive to animal life. But this movement would imme-
diately cease with the planetary concurrence which produced it, and the earth,
hke a compressed spring, bound almost as near to the sun as she had been
drawn from it, the reaction of the heat on its surface being about as intense as
the cold caused by the first removal was severe. The earth, until it gained its
regular track, would thus alternately vibrate between each side of its orbit,
with successive changes in its atmosphere, proportional to the square of the
variation of its distance from the sun. In no place is Bacon’s genius more
conspicuous than in these repeated guesses at truth. He would have been 2
strong Copernican, had not Gilbert defended the system.—Ld.

234 NOVUM ORGANUM

account and observed. We must also note the boundaries
of violent motions, such as missiles, projectiles, wheels and
the like, since they are also manifestly confined to certain
limits.

Some motions and virtues are to be found of a directly
contrary nature to these, which act in contact but not at a
distance; namely, such as operate at a distance and not in
contact, and again act with less force at a less distance, and
the reverse. Sight, for instance, is not easily effective in
contact, but requires a medium and distance; although I
remember having heard from a person deserving of credit,
that in being cured of a cataract (which was done by put-
ting a small silver needle within the first coat of the eye, to
remove the thin pellicle of the cataract, and force it into a
corner of the eye), he had distinctly seen the needle moving
across the pupil. Still, though this may be true, it is clear
that large bodies cannot be seen well or distinctly, unless at
the vertex of a cone, where the rays from the object meet
at some distance from the eye. In old persons the eye sees
better if the object be moved a little further, and not nearer.
Again, it is certain that in projectiles the impact is not so
violent at too short a distance as a little afterward.”* Such
are the observations to be made on the measure of motions
as regards distance.

There is another measure of motion in space which must

% This is not true except when the projectile acquires greater velocity
at every successive instant of its course, which is never the case except with
falling bodies. Bacon appears to have been led into the opinion from observ-
ing that gunshots pierce many objects at a distance from which they rebound
when brought within a certain proximity of contact. This apparent inconsist-
ency, however, arises from the resistance of the parts of the object, which
velocity combined with force is necessary to overcome.—£d.

NOVUM ORGANUM 239

not be passed over, not relating to progressive but spherical
motion—that is, the expansion of bodies into a greater, or
their contraction into a lesser sphere. For in our measure
of this motion we must inquire what degree of compression
or extension bodies easily and readily admit of, accord-
ing to their nature, and at what point they begin to resist
it, so as at last to bear it no further—as when an inflated
bladder is compressed, it allows a certain compression of
the air, but if this be increased, the air does not suffer
it, and the bladder is burst.

We have proved this by a more delicate experiment.
We took a metal bell, of a light and thin sort, such as is
used for salt-cellars, and immersed it in a basin of water,
so as to carry the air contained in its interior down with it
to the bottom of the basin. We had first, however, placed
a small globe at the bottom of the basin, over which we
placed the bell. The result was, that if the globe were
small compared with the interior of the bell, the air would
contract itself, and be compressed without being forced out,
but if it were too large for the air readily to yield to it,
the latter became impatient of the pressure, raised the bell
partly up, and ascended in bubbles.

To prove, also, the extension (as well as the compres-
sion) which air admits of, we adopted the following method:
—We took a glass egg, with a small hole at one end; we
drew out the air by violent suction at this hole, and then
closed the hole with the finger, immersed the egg in water,
and then removed the finger. The air being constrained by
the effort made in suction, and dilated beyond its natural
state, and therefore striving to recover and contract itself
(so that if the egg had not been immersed in water, it would
have drawn in the air with a hissing sound), now drew in

236 NOVUM ORGANUM

a sufficient quantity of water to allow the air to recover
its former dimensions.”

It is well ascertained that rare bodies (such as air) admit
of considerable contraction, as has been before observed;
but tangible bodies (such as water) admit of it much less
readily, and to a less extent. We investigated the latter
point by the following experiment:

We had a leaden globe made, capable of containing
about two pints, wine measure, and of tolerable thickness,
so as to support considerable pressure. We poured water
into it through an aperture, which we afterward closed with
melted lead, as soon as the globe was filled with water, so
that the whole became perfectly solid. We next flattened
the two opposite sides with a heavy hammer, which neces-
sarily caused the water to occupy a less space, since the
sphere is the solid of greatest content; and when hammer-
ing failed from the resistance of the water, we made use of
a mill or press, till at last the water, refusing to submit
to a greater pressure, exuded like a fine dew through the
solid lead. We then computed the extent to which the
original space had been reduced, and concluded that water
admitted such a degree of compression when constrained
by great violence.

The more solid, dry or compact bodies, such as stones,
wood and metals, admit of much less, and indeed scarcely
any perceptible compression or expansion, but escape by
breaking, slipping forward, or other efforts; as appears in
bending wood, or steel for watch-springs, in projectiles,
hammering and many other motions, all of which, together

16 This passage shows that the pressure of the external atmosphere, which
forces the water into the egg, was not in Bacon’s time understood.—d.

NOVUM ORGANUM 237

with their degrees, are to be observed and examined in the
investigation of nature, either to a certainty, or by esti-
mation, or comparison, as opportunity permits.

XLVI. In the twenty-second rank of prerogative in-
stances we will place the instances of the course, which
we are also wont to call water instances, borrowing our
expression from the water hour-glasses employed by the
ancients instead of those with sand. They are such as
measure nature by the moments of time, as the last in-
stances do by the degrees of space. For all motion or nat-
ural action takes place in time, more or less rapidly, but
still in determined moments well ascertained by nature.
Even those actions which appear to take effect suddenly,
and in the twinkling of an eye (as we express it), are
found to admit of greater or less rapidity.

In the first place, then, we see that the return of the
heavenly bodies to the same place takes place in regular
times, as does the flood and ebb of the sea. The descent
of heavy bodies toward the earth, and the ascent of hght
bodies toward the heavenly sphere, take place in definite
times,"” according to the nature of the body, and of the
medium through which it moves. The sailing of ships,
the motions of animals, the transmission of projectiles, all

17 We have already alluded, in a note prefixed to the same aphorism of the
first book, to Newton’s error of the absolute lightness of bodies. In speaking
again of the volatile or spiritual substances (Aph. xl. b. ii.), which he sup-
posed with the Platonists and some of the schoolmen to enter into the composi-
tion of every body, he ascribes to them a power of lessening the weight of the
material coating in which he supposes them inclosed. It would appear from
these passages and the text that Bacon had no idea of the relative density of
bodies, and the capability which some have to diminish the specific gravity of
the heavier substances by the dilation of their parts; or if he had, the reveries
in which Aristotle indulged in treating of the soul, about the appetency of
bodies to fly to kindred substances—flame and spirit to the sky, and solid
opaque substances to the earth, must have vitiated his mind.—L£d.

2388 NOVUM ORGANUM

take place in times the sums of which can be computed.
With regard to heat, we see that boys in winter bathe
their hands in the flame without being burned; and con-
jurers, by quick and regular movements, overturn vessels
filled with wine or water, and replace them without spilling
the liquid, with several similar instances. The compres-
sion, expansion and eruption of several bodies, take place
more or less rapidly, according to the nature of the body
and its motion, but still in definite moments.

In the explosion of several cannon at once (which are
sometimes heard at the distance of thirty miles), the sound
of those nearest to the spot is heard before that of the most
distant. Even in sight (whose action is most rapid), it is
clear that a definite time is necessary for its exertion,
which is proved by certain objects being invisible from
the velocity of their motion, such as a musket-ball; for
the flight of the ball is too swift to allow an impression
of its figure to be conveyed to the sight.

This last instance, and others of a like nature, have
sometimes excited in us a most marvellous doubt, no less
than whether the image of the sky and stars is perceived
as at the actual moment of its existence, or rather a little
after, and whether there is not (with regard to the visible
appearance of the heavenly bodies) a true and apparent
time, as well as a true and apparent place, which is ob-
served by astronomers in parallaxes. It appeared so in-
credible to us, that the images or radiations of heavenly
bodies could suddenly be conveyed through such immense
spaces to the sight, and it seemed that they ought rather
to be transmitted in a definite time.”* That doubt, however

78 Romer, a Danish astronomer, was the first to demonstrate, by connecting
the irregularities of the eclipses of Jupiter’s satellites with their distances from

NOVUM ORGANUM 239

(as far as regards any great difference between the true and
apparent time), was subsequently completely set at rest,
when we considered the infinite loss and diminution of
size as regards the real and apparent magnitude of a star,
occasioned by its distance, and at the same time observed
at how great a distance (at least sixty miles) bodies which
are merely white can be suddenly seen by us. For there
is no doubt, that the light of the heavenly bodies not only
far surpasses the vivid appearance of white, but even the
light of any flame (with which we are acquainted) in the
vigor of its radiation. The immense velocity of the bodies
' themselves, which is perceived in their diurnal motion, and
has so astonished thinking men, that they have been more
ready to believe in the motion of the earth, renders the
motion of radiation from them (marvellous as it is in its
rapidity) more worthy of belief. That which has weighed
most with us, however, is, that if there were any consider-
able interval of time between the reality and the appear-
ance, the images would often be interrupted and confused
by clouds formed in the meantime, and similar disturb-
ances of the medium. Let this suffice with regard to the
simple measures of time.

It is not merely the absolute, but still more the relative
measure of motions and actions which must be inquired
into, for this latter 1s of great use and application. We
perceive that the flame of firearms is seen sooner than the
sound is heard, although the ball must have struck the air
before the flame, which was behind it, could escape: the
reason of which is, that light moves with greater velocity

the earth, the necessity of time for the propagation of light. The idea occurred
to Dominic Cassini as well as Bacon, but both allowed the discovery to slip out
of their hands.—£d,

240 NOVUM ORGANUM

than sound. We perceive, also, that visible images are re-
ceived by the sight with greater rapidity than they are dis-
missed, and for this reason, a violin string touched with the
finger appears double or triple, because the new image is
received befcre the former one is dismissed. Hence, also,
rings when spinning appear globular, and a lighted torch,
borne rapidly along at night, appears to have a tail. Upon
the principle of the inequality of motion, also, Galileo at-
tempted an explanation of the flood and ebb of the sea,
supposing the earth to move rapidly, and the water slowly,
by which means the water, after accumulating, would at
intervals fall back, as is shown in a vessel of water made
to move rapidly. He has, however, imagined this on data
which cannot be granted (namely, the earth’s motion), and
besides, does not satisfactorily account for the tide taking
place every six hours.

An example of our present point (the relative measure
of motion), and, at the same time, of its remarkable use of
which we have spoken, is conspicuous in mines filled with
gunpowder, where immense weights of earth, buildings,
and the like, are overthrown and prostrated by a small
quantity of powder; the reason of which is decidedly this,
that the motion of the expansion of the gunpowder is much
more rapid than that of gravity,” which would resist it, so
that the former has terminated before the latter has com-
menced. Hence, also, in missiles, a strong blow will not
carry them so far as a sharp and rapid one. Nor could a
small portion of animal spirit in animals, especially in such

79 The author in the text confounds inertness, which is a simple indifference
of bodies to action, with gravity, which is a force acting always in proportion
to their density. He falls into the same error further on.—£d,

NOVUM ORGANUM 241

vast bodies as those of the whale and elephant, have ever
bent or directed such a mass of body, were it not owing to
the velocity of the former, and the slowness of the latter in
resisting its motion.

In short, this point is one of the principal foundations
of the magic experiments (of which we shall presently
speak), where a small mass of matter overcomes and regu-
lates a much larger, if there but be an anticipation of
motion, by the velocity of one before the other is pre-
pared to act.

Finally, the point of the first and last should be ob-
served in all natural actions. Thus, in an infusion of rhu-
barb the purgative property is first extracted, and then the
astringent; we have experienced something of the same
kind in steeping violets in vinegar, which first extracts the
sweet and delicate odor of the flower, and then the more
earthy part, which disturbs the perfume; so that if the vio-
lets be steeped a whole day, a much fainter perfume is
extracted than if they were steeped for a quarter of an hour
only, and then taken out; and since the odoriferous spirit
in the violet is not abundant, let other and fresh violets be
steeped in the vinegar every quarter of an hour, as many as
six times, when the infusion becomes so strengthened, that
although the violets have not altogether remained there for
more than one hour and a half, there remains a most pleas-
ing perfume, not inferior to the flower itself, for a whole
year. It must be observed, however, that the perfume
does not acquire its full strength till about a month after
the infusion. In the distillation of aromatic plants macer-
ated in spirits of wine, it is well known that an aqueous
and useless phlegm rises first, then water containing more
of the spirit, and, lastly, water containing more of the

242 NOVUM ORGANUM

aroma; and many observations of the like kind, well worthy
of notice, are to be made in distillations. But let these
suffice as examples.”

‘0 The experiments of the last two classes of instances are considered only
in relation to practice, and Bacon does not so much as mention their infinitely
greater importance in the theoretical part of induction. The important law of
gravitation in physical astronomy could never have been demonstrated but by
such observations and experiments as assigned accurate geometrical measures
to the quantities compared. It was necessary to determine with precision the
demi-diameter of the earth, the velocity of falling bodies at its surface, the dis-
tance of the moon, and the speed with which she describes her orbit, before
the relation could be discovered between the force which draws a stone to the
ground and that which retains the moon in her sphere.

In many cases the result of a number of particular facts, or the collective
instances rising out of them, can only be discovered by geometry, which so far
becomes necessary to complete the work of induction. For instance, in the
case of optics, when light passes from one transparent medium to another, it
is refracted, and the angle which the ray of incidence makes with the super-
ficies which bounds the two media determines that which the refracted ray
makes with the same superficies. Now, all experiment can do for us in this
case is, to determine for any particular angle of incidence the corresponding
angle of refraction. But with respect to the general rule which in every pos-
sible case deduces one of these angles from the other, or expresses the constant
and invariable relation which subsists between them, experiment gives no direct
information. Geometry must, consequently, be called in, which, when a con-
stant though unknown relation subsists between two angles, or two variable
qualities of any kind, and when an indefinite number of values of those quanti-
ties are assigned, furnishes infallible means of discovering that unknown rela-
tion either accurately or by approximation. In this way it has been found,
when the two media remain the same, the cosines of the above-mentioned
angles have a constant ratio to each other. Hence, when the relations of the
simple elements of phenomena are discovered to afford a general rule which
will apply to any concrete case, the deductive method must be applied, and the
elementary principles made through its agency to account for the laws of their
more complex combinations. The reflection and refraction of light by the rain
falling from a cloud opposite to the sun was thought, even before Newton’s
day, to contain the form of the rainbow. This philosopher transformed a prob-
able conjecture into a certain fact when he deduced from the known laws of
reflection and refraction the breadth of the colored arch, the diameter of the
circle of which it is a part, and the relation of the latter to the place of the
spectator and the sun. Doubt was at once silenced when there came out of
his calculus a combination of the same laws of the simple elements of optics
answering to the phenomena in nature.—Ld. :

NOVUM ORGANUM 243

XLVII. In the twenty-third rank of prerogative in-
stances we will place instances of quantity, which we are
also wont to call the doses of nature (borrowing a word
from medicine). They are such as measure the powers by
the quantity of bodies, and point out the effect of the quan-
tity in the degree of power. And in the first place, some
powers only subsist in the universal quantity, or such as
bears a relation to the confirmation and fabric of the uni-
verse. Thus the earth is fixed, its parts fall. The waters
in the sea flow and ebb, but not in the rivers, except by the
admission of the sea. Then, again, almost all particular
powers act according to the greater or less quantity of the
body. Large masses cf water are not easily rendered foul,
small are. New wine and beer become ripe and drinkable
in small skins much more readily than in large casks. Ifa
herb be placed in a considerable quantity of liquid, infusion
takes place rather than impregnation; if in less, the reverse.
A bath, therefore, and a light sprinkling, produce different
effects on the human body. Light dew, again, never falls,
but is dissipated and incorporated with the air; thus we see
that in breathing on gems, the slight quantity of moisture,
like a small cloud in the air, is immediately dissolved.
Again, a piece of the same magnet does not attract so much
iron as the whole magnet did. There are some powers
where the smallness of the quantity is of more avail; as in
boring, a sharp point pierces more readily than a blunt one;
the diamond, when pointed, makes an impression on glass,
and the like.

Here, too, we must not rest contented with a vague
result, but inquire into the exact proportion of quantity
requisite for a particular exertion of power; for one would

be apt to suppose that the power bears an exact proportion
ScienceE— Vol, 22—11

244 NOVUM ORGANUM

to the quantity; that if a leaden bullet of one ounce, for
instance, would fall in a given time, one of two ounces
ought to fall twice as rapidly, which is most erroneous.
Nor does the same ratio prevail in every kind of power,
their difference being considerable. The measure, there-
fore, must be determined by experiment, and not by proba-
bility or conjecture.

Lastly, we must in all our investigations of nature ob-
serve what quantity, or dose, of the body is requisite for a
given effect, and must at the same time be guarded against
estimating it at too much or too little.

XLVIII. In the twenty-fourth rank of prerogative in-
stances we will place wrestling instances, which we are also
wont to call instances of predominance. They are such as
point out the predominance and submission of powers com-
pared with each other, and which of them is the more ener-
getic and superior, or more weak and inferior. For the
motions and effects of bodies are compounded, decom-
posed, and combined, no less than the bodies themselves.
We will exhibit, therefore, the principal kinds of motions
or active powers, in order that their comparative strength,
and thence a demonstration and definition of the instances
in question, may be rendered more clear.

Let the first motion be that of the resistance of matter,
which exists in every particle, and completely prevents its
annihilation; so that no conflagration, weight, pressure, vio-
lence, or length of time can reduce even the smallest por-
tion of matter to nothing, or prevent it from being some-
thing, and occupying some space, and delivering itself
(whatever straits it be put to), by changing its form or
place, or, if that be impossible, remaining as it 1s; nor can
it ever happen that it should either be nothing or nowhere.

NOVUM ORGANUM 245

This motion is designated by the schools (which generally
name and define everything by its effects and inconven-
iences rather than by its inherent cause) by the axiom, that
two bodies cannot exist in the same place, or they call ita
motion to prevent the penetration of dimensions. It is use-
less to give examples of this motion, since it exists in
every body.

Let the second motion be that which we term the motion
of connection, by which bodies do not allow themselves to
be separated at any point from the contact of another body,
delighting, as it were, in the mutual connection and contact.
This is called by the schools a motion to prevent a vacuum.
It takes place when water is drawn up by suction or a
syringe, the flesh by cupping, or when the water remains
without escaping from perforated jars, unless the mouth be
opened to admit the air, and innumerable instances of a like
nature.

Let the third be that which we term the motion of lib-
erty, by which bodies strive to deliver themselves from any
unnatural pressure or tension, and to restore themselves to
the dimensions suited to their mass; and of which, also,
there are innumerable examples. Thus, we have examples
of their escaping from pressure, in the water in swimming,
in the air in flying, in the water again in rowing, and in the
air in the undulation of the winds, and in springs of
watches. An exact instance of the motion of compressed
air is seen in children’s popguns, which they make by
scooping out elder-branches or some such matter, and
forcing in a piece of some pulpy root or the like, at each
end; then they force the root or other pellet with a ramrod
to the opposite end, from which the lower pellet is emitted _
and projected with a report, and that before it is touched

246 NOVUM ORGANUM

by the other piece of root or pellet, or by the ramrod. We
have examples of their escape from tension, in the motion
of the air that remains in glass eggs after suction, in strings,
leather, and cloth, which recoil after tension, unless it be
long continued. The schools define this by the term of
motion from the form of the element; injudiciously enough,
since this motion is to be found not only in air, water, or
fire, but in every species of solid, as wood, iron, lead, cloth,
parchment, etc., each of which has its own proper size, and
is with difficulty stretched to any other. Since, however,
this motion of liberty is the most obvious of all, and to be
seen in an infinite number of cases, it will be as well to dis-
tinguish it correctly and clearly; for some most carelessly
confound this with the two others of resistance and connec-
tion; namely, the freedom from pressure with the former,
and that from tension with the latter, as if bodies when com-
pressed yielded or expanded to prevent a penetration of
dimensions, and when stretched rebounded and contracted
themselves to prevent a vacuum. But if the air, when
compressed, could be brought to the density of water, or
wood to that of stone, there would be no need of any pene-
tration of dimensions, and yet the compression would be
much greater than they actually admit of. So if water
could be expanded till it became as rare as air, or stone as
rare as wood, there would be no need of a vacuum, and yet
the expansion would be much greater than they actually
admit of.

We do not, therefore, arrive at a penetration of dimen-
sions or a vacuum before the extremes of condensation
and rarefaction, while the motion we speak of stops
and exerts itself much within them, and is nothing more
than a desire of bodies to preserve their specific density (or,

NOVUM ORGANUM 247

if it be preferred, their form), and not to desert them sud-
denly, but only to change by degrees, and of their own
accord. It is, however, much more necessary to intimate
to mankind (because many other points depend upon this),
that the violent motion which we call mechanical, and
Democritus (who, in explaining his primary motions, is
to be ranked even below the middling class of philoso-
phers) termed the motion of a blow, is nothing else than
this motion of liberty, namely, a tendency to relaxation
from compression. For in all simple impulsion or flight
through the air, the body is not displaced or moved in
space, until its parts are placed in an unnatural state, and
compressed by the impelling force. When that takes
place, the different parts urging the other in succes-
sion, the whole is moved, and that. with a rotatory as
well as progressive motion, in order that the parts may,
by this means also, set themselves at liberty, or more
readily submit. Let this suffice for the motion in
question.

Let the fourth be that which we term the motion of mat-
ter, and which is opposed to the last; for in the motion of
liberty, bodies abhor, reject, and avoid a new size or vol-
ume, or any new expansion or contraction (for these differ-
ent terms have the same meaning), and strive, with all their
power, to rebound and resume their former density; on the
contrary, in the motion of matter, they are anxious to ac-
quire a new volume or dimension, and attempt it willingly
and rapidly, and occasionally by a most vigorous effort, as
in the example of gunpowder. The most powerful, or at
least most frequent, though not the only instruments of
this motion, are heat and cold. For instance, the air, if
expanded by tension (as by suction in the glass egg), strug-

248 NOVUM ORGANUM

gles anxiously to restore itself; but if heat be applied, it
strives, on the contrary, to dilate itself, and longs for a
larger volume, regularly passing and migrating into it, as
into a new form (as it is termed); nor after a certain degree
of expansion is it anxious to return, unless it be invited to
do so by the application of cold, which is not indeed a re-
turn, but a fresh change. So also water, when confined by
compression, resists, and wishes to become as it was before,
namely, more expanded; but if there happen an intense
and continued cold, it changes itself readily, and of its own
accord, into the condensed state of ice; and if the cold be
long continued, without any intervening warmth (as in
grottoes and deep caves), it is changed into crystal or simi-
lar matter, and never resumes its form.

Let the fifth be that which we term the motion of con-
tinuity. We do not understand by this simple and primary
continuity with any other body (for that is the motion of
connection), but the continuity of a particular body in
itself; for it is most certain that all bodies abhor a solu-
tion of continuity, some more and some less, but all par-
tially. In hard bodies (such as steel and glass) the resist-
ance to an interruption of continuity is most powerful and
efficacious, while although in liquids it appears to be faint
and languid, yet it 1s not altogether null, but exists in the
lowest degree, and shows itself in many experiments, such
as bubbles, the round form of drops, the thin threads which
drip from roofs, the cohesion of glutinous substances, and
the like. It is most conspicuous, however, if an attempt
be made to push this separation to still smaller particles.
Thus, in mortars, the pestle produces no effect after a cer-
tain degree of contusion, water does not penetrate small
fissures, and the air itself, notwithstanding its subtilty,

NOVUM ORGANUM 249

does not penetrate the pores of solid vessels at once, but
only by long-continued insinuation.

Let the sixth be that which we term the motion of acqui-
sition, or the motion of need.* It is that by which bodies
placed among others of a heterogeneous and, as it were,
hostile nature, if they meet with the means or opportunity
of avoiding them, and uniting themselves with others of
a more analogous nature, even when these latter are not
closely allied to them, immediately seize and, as it were,
select them, and appear to consider it as something acquired
(whence we derive the name), and to have need of these
latter bodies. For instance, gold, or any other metal in
leaf, does not like the neighborhood of air; if, therefore,
they meet with any tangible and thick substance (such as
the finger, paper, or the like), they immediately adhere to
it, and are not easily torn from it. Paper, too, and cloth,
and the like, do not agree with the air, which is inherent
and mixed in their pores. They readily, therefore, imbibe
water or other liquids, and get rid of the air. Sugar, ora
sponge, dipped in water or wine, and though part of it be
out of the water or wine, and at some height above it, will
yet gradually absorb them.”

Hence an excellent rule is derived for the opening
and dissolution of bodies; for (not to mention corrosive
and strong waters, which force their way) if a body can
be found which is more adapted, suited, and friendly to
a given solid, than that with which it is by some necessity
united, the given solid immediately opens and dissolves

81 As far as this motion results from attraction and repulsion, it is only a
simple consequence of the last two.—£d.

82 These two cases are now resolved into the property of the capillary tubes
and present only another feature of the law of attraction.—Zd.

ZOU NOVUM ORGANUM

itself to receive the former, and excludes or removes the
latter.*° Nor is the effect or power of this motion confined
to contact, for the electric energy (of which Gilbert and
others after him have told so many fables) is only the
energy excited in a body, by gentle friction, and which
does not endure the air, but prefers some tangible substance
if there be any at hand.

Let the seventh be that which we term the motion of
greater congregation, by which bodies are borne toward
masses of a similar nature, for instance, heavy bodies toward
the earth, light to the sphere of heaven. The schools termed
this natural motion, by a superficial consideration of it, be-
cause produced by no external visible agent, which made
them consider it innate in the substances; or perhaps
because it does not cease, which is little to be wondered
at, since heaven and earth are always present, while the
causes and sources of many other motions are sometimes
absent and sometimes present. They therefore called this
perpetual and proper, because it is never interrupted, but
instantly takes place when the others are interrupted, and
they called the others adscititious. The former, however,
is in reality weak and slow, since it yields, and is inferior
to the others as long as they act, unless the mass of the
body be great; and although this motion have so filled _
men’s minds, as almost to have obscured all others, yet
they know but little about it, and commit many errors in
its estimate.

Let the eighth be that which we term the motion of
lesser congregation, by which the homogeneous parts in

88 This is one of the most useful practical methods in chemistry at the
present day.

NOVUM ORGANUM 251

any body separate themselves from the heterogeneous and
unite together, and whole bodies of a similar substance
coalesce and tend toward each other, and are sometimes
congregated, attracted, and meet, from some distance; thus
in milk the cream rises after a certain time, and in wine the
dregs and tartar sink; which effects are not to be attributed »
to gravity and levity only, so as to account for the rising
of some parts and the sinking of others, but much more to
the desire of the homogeneous bodies to meet and unite.
This motion differs from that of need in two points: Ist,
because the latter is the stimulus of a malignant and con-
trary nature, while in this of which we treat (if there be no
impediment or restraint), the parts are united by their
affinity, although there be no foreign nature to create a
struggle; 2dly, because the union is closer and more
select. For in the other motion, bodies which have no
great affinity unite, if they can but avoid the hostile body,
while in this, substances which are connected by a decided
kindred resemblance come together and are molded into
one. It is a motion existing in all compound bodies, and
would be readily seen in each, if it were not confined and
checked by the other affections and necessities of bodies
which disturb the union.

This motion is usually confined in the three following
manners: by the torpor of the bodies; by the power of the
predominating body; by external motion. With regard to
the first, it 1s certain that there is more or less sluggishness
in tangible bodies, and an abhorrence of locomotion; so that
unless excited they prefer remaining contented with their
actual state, to placing themselves in a better position.
There are three means of breaking through this sluggish-
ness—heat; the active power of a similar body; vivid and

252 NOVUM ORGANUM

powerful motion. With regard to the first, heat is, on this
account, defined as that which separates heterogeneous, and
draws together homogeneous substances; a definition of
the Peripatetics which is justly ridiculed by Gilbert, who
Says it is as if one were to define man to be that which
sows wheat and plants vineyards; being only a definition
deduced from effects, and those but partial. But it is still
more to be blamed, because those effects, such as they are,
are not a peculiar property of heat, but a mere accident (for
cold, as we shall afterward show, does the same), arising
from the desire of the homogeneous parts to unite; the
heat then assists them in breaking through that sluggish-
ness which before restrained their desire. With regard to
the assistance derived from the power of a similar body, it
is most conspicuous in the magnet when armed with steel,
for it excites in the steel a power of adhering to steel, asa
homogeneous substance, the power of the magnet breaking
through the sluggishness of the steel. With regard to the
assistance of motion, it is seen in wooden arrows or points,
which penetrate more deeply into wood than if they were
tipped with iron, from the similarity of the substance, the
swiftness of the motion breaking through the sluggishness
of the wood; of which two last experiments we have spoken
above in the aphorism on clandestine instances.“ |

The confinement of the motion of lesser congregation,
which arises from the power of the predominant body, is
shown in the decomposition of blood and urine by cold.
For as long as these substances are filled with the active
spirit, which regulates and restrains each of their component
parts, as the predominant ruler of the whole, the several

84 See Aphorism xxv.

NOVUM ORGANUM 253

different parts do not collect themselves separately on ac-
count of the check; but as soon as that spirit has evapo-
rated, or has been choked by the cold, then the decomposed
parts unite, according to their natural desire. Hence it
happens, that all bodies which contain a sharp spirit (as
salts and the like), last without decomposition, owing
to the permanent and durable power of the predominating
and imperious spirit.

The confinement of the motion of lesser congregation,
which arises from external motion, is very evident in that
agitation of bodies which preserves them from putrefaction.
For all putrefaction depends on the congregation of the
homogeneous parts, whence, by degrees, there ensues a
corruption of the first form (as it is called), and the gen-
eration of another. For the decomposition of the original
form, which is itself the union of the homogeneous parts,
precedes the putrefaction, which prepares the way for the
generation of another. This decomposition, if not inter-
rupted, is simple; but if there be various obstacles, putre-
factions ensue, which are the rudiments of a new genera-
tion. But if (to come to our present point) a frequent
agitation be excited by external motion, the motion toward
union (which is delicate and gentle, and requires to be free
from all external influence) is disturbed, and ceases; which
we perceive to be the case in innumerable instances. Thus,
the daily agitation or flowing of water prevents putrefaction;
winds prevent the air from being pestilent; corn turned
about and shaken in granaries continues clean: in short,
everything which is externally agitated will with difficulty
rot internally.

We must not omit that union of the parts of bodies
which is the principal cause of induration and desiccation.

254 NOVUM ORGANUM

When the spirit or moisture, which has evaporated into
spirit, has escaped from a porous body (such as wood,
bone, parchment, and the like), the thicker parts are drawn
together, and united with a greater effort, and induration
or desiccation is the consequence; and this we attribute not
so much to the motion of connection (in order to prevent a
vacuum), as to this motion of friendship and union.

Union from a distance is rare, and yet is to be met with
in more instances than are generally observed. We per-
ceive it when one bubble dissolves another, when medi-
cines attract humors from a similarity of substance, when
one string moves another in unison with it on different
instruments, and the like. We are of opinion that this
motion is very prevalent also in animal spirits, but are
quite ignorant of the fact. It is, however, conspicuous in
the magnet, and magnetized iron. While speaking of the
motions of the magnet, we must plainly distinguish them,
for there are four distinct powers or effects of the magnet
which should not be confounded, although the wonder and
astonishment of mankind has classed them together. 1. The
attraction of the magnet to the magnet, or of iron to the
magnet, or of magnetized iron to iron. 2. Its polarity
toward the north and south, and its variation. 38. Its pene-
tration through gold, glass, stone, and all other substances.
4, The communication of power from the mineral to iron,
and from iron to iron, without any communication of the
substances. Here, however, we only speak of the first.
There is also a singular motion of attraction between quick-
silver and gold, so that the gold attracts quicksilver even
when made use of in ointment; and those who work sur-
rounded by the vapors of quicksilver, are wont to hold a
piece of gold in their mouths, to collect the exhalations,

NOVUM ORGANUM 7 255

which would otherwise attack their heads and bones, and
this piece soon grows white.* Let this suffice for the mo-
tio.. of lesser congregation.

Let the ninth be the magnetic motion, which, although
of the nature of that last mentioned, yet, when operating
at great distances, and on great masses, deserves a separate
inquiry, especially if it neither begin in contact, as most
motions of congregation do, nor end by bringing the sub-
stances into contact, as all do, but only raise them, and
make them swell without any further effect. For if the
moon raise the waters, or cause moist substances to swell,
or if the starry sphere attract the planets toward their
apogees, or the sun confine the planets Mercury and Venus
to within a certain distance of his mass;* these motions do
not appear capable of being classed under either of those
of congregation, but to be, as it were, intermediately and
imperfectly congregative, and thus to form a distinct species.

Let the tenth motion be that of avoidance, or that which
is opposed to the motion of lesser congregation, by which
bodies, with a kind of antipathy, avoid and disperse, and
separate themselves from, or refuse to unite themselves
with others of a hostile nature. For although this may
sometimes appear to be an accidental motion, necessarily
attendant upon that of the lesser congregation, because the
homogeneous parts cannot unite, unless the heterogeneous
be first removed and excluded, yet it is still to be classed
separately,’ and considered as a distinct species, because,

6 Query?

86 Observe this approximation to Newton’s theory.

81 Those differences which are generated by the masses and respective dis-
tances of bodies are only differences of quantity, and not specific; consequently
those three classes are only one.—Ld.

256 : NOVUM ORGANUM

in many cases, the desire of avoidance appears to be more
marked than that of union.

It is very conspicuous in the excrements of animals,
nor less, perhaps, in objects odious to particular senses,
especially the smell and taste; for a fetid smell is rejected
by the nose, so as to produce a sympathetic motion of ex-
pulsion at the mouth of the stomach; a bitter and rough
taste is rejected by the palate or throat, so as to produce
a sympathetic concussion and shivering of the head. This
motion is visible also in other cases. Thus it is observed
in some kinds of antiperistasis, as in the middle region of
the air, the cold of which appears to be occasioned by the
rejection of cold from the regions of the heavenly bodies;
and also in the heat and combustion observed in subter-
ranean spots, which appear to be owing to the rejection of
heat from the centre of the earth. For heat and cold, when
in small quantities, mutually destroy each other, while in
larger quantities, like armies equally matched, they remove
and eject each other in open conflict. It is said, also that
cinnamon and other perfumes retain their odor longer when
placed near privies and foul places, because they will not
unite and mix with stinks. It is well known that quick-
silver, which would otherwise reunite into a complete mass,
is prevented from so doing by man’s spittle, pork lard, tur-
pentine and the like, from the little affinity of its parts with
those substances, so that when surrounded by them it draws
itself back, and its avoidance of these intervening obstacles
is greater than its desire of reuniting itself to its homoge-
neous parts; which is what they term the mortification of
quicksilver. Again, the difference in weight of oil and
water is not the only reason for their refusing to mix, but
it is also owing to the little affinity of the two; for spirits

NOVUM ORGANUM 257

of wine, which are lighter than oil, mix very well with
water. A very remarkable instance of the motion in ques-
tion is seen in nitre, and crude bodies of a like nature,
which abhor flame, as may be observed in gunpowder,
quicksilver and gold. The avoidance of one pole of the
magnet by iron is not (as Gilbert has well observed),
strictly speaking, an avoidance, but a conformity, or at-
traction to a more convenient situation.

Let the eleventh motion be that of assimilation, or self-
multiplication, or simple generation, by which latter term
we do not mean the simple generation of integral bodies,
such as plants or animals, but of homogeneous bodies.
By this motion homogeneous bodies convert those which
are allied to them, or at least well disposed and prepared,
into their own substance and nature. Thus flame multi-
plies itself over vapors and oily substances and generates
fresh flame; the air over water and watery substances mul-
tiplies itself and generates fresh air; the vegetable and ani-
mal spirit, over the thin particles of a watery or oleaginous
spirit contained in its food, multiples itself and generates
fresh spirit; the solid parts of plants and animals, as the
leaf, flower, the flesh, bone and the like, each of them
assimilate some part of the juices contained in their food,
and generate a successive and daily substance. For let
none rave with Paracelsus, who (blinded by his distilla-
tions) would have it, that nutrition takes place by mere
separation, and that the eye, nose, brain and liver lie con-
cealed in bread and meat, the root, leaf and flower, in the
juice of the earth; asserting that just as the artist brings
out a leaf, flower, eye, nose, hand, foot and the like, from
arude mass of stone or wood by the separation and rejec-
tion of what is superfluous; so the great artist within us

258 NOVUM ORGANUM

brings out our several limbs and parts by separation and
rejection. But to leave such trifling, it is most certain that
all the parts of vegetables and animals, as well the homo-
geneous as organic, first of all attract those juices contained
in their food, which are nearly common, or at least not very
different, and then assimilate and convert them into their
own nature. Nor does this assimilation, or simple genera-
tion, take place in animated bodies only, but the inanimate
also participate in the same property (as we have observed
of flame and air), and that languid spirit, which is contained
in every tangible animated substance, is perpetually work-
ing upon the coarser parts, and converting them into spirit,
which afterward is exhaled, whence ensues a diminution of
weight, and a desiccation of which we have spoken else-
where.”

Nor should we, in speaking of assimilation, neglect
to mention the accretion which is usually distinguished
from aliment, and which is observed when mud grows into
a mass between stones, and is converted into a stony sub-
stance, and the scaly substance round the teeth is converted
into one no less hard than the teeth themselves; for we are
of opinion that there exists in all bodies a desire of assim-
ilation, as well as of uniting with homogeneous masses.
Kach of these powers, however, is confined, although in
different manners, and should be diligently investigated,
because they are connected with the revival of old age.
Lastly, it is worthy of observation, that in the nine
preceding motions, bodies appear to aim at the mere
preservation of their nature, while in this they attempt

its propagation.

88 See the citing instances, Aphorism xl.

NOVUM ORGANUM 259

Let the twelfth motion be that of excitement, which
appears to be a species of the last, and is sometimes men-
tioned by us under that name. It is, like that, a diffu-
sive, communicative, transitive and multiplying motion;
and they agree remarkably in their effect, although they
differ in their mode of action, and in their subject matter.
The former proceeds imperiously and with authority; it
orders and compels the assimilated to be converted and
changed into the assimilating body. The latter proceeds
by art, insinuation and stealth, inviting and disposing the
excited toward the nature of the exciting body. The for-
mer both multiplies and transforms bodies and substances;
thus a greater quantity of flame, air, spirit and flesh is
formed; but in the latter, the powers only are multiplied
and changed, and heat, the magnetic power, and putrefac-
tion, in the above instances, are increased. Heat does not
diffuse itself when heating other bodies by any communica-
tion of the original heat, but only by exciting the parts of
the heated body to that motion which is the form of heat,
and of which we spoke in the first vintage of the nature
of heat. Heat, therefore, is excited much less rapidly and
readily in stone or metal than in air, on account of the in-
aptitude and sluggishness of those bodies in acquiring that
motion, so that it is probable, that there may be some sub-
stances, toward the centre of the earth, quite incapable of
being heated, on account of their density, which may de-
prive them of the spirit by which the motion of excitement
is usually commenced. Thus also the magnet creates in the
iron a new disposition of its parts, and a conformable mo-
tion, without losing any of its virtue. So the leaven of
bread, yeast, rennet and some poisons, excite and invite
successive and continued motion in dough, beer, cheese or

260 _NOVUM ORGANUM

the human body; not so much from the power of the
exciting, as the predisposition and yielding of the excited
body.

Let the thirteenth motion be that of impression, which
is also a species of motion of assimilation, and the most
subtile of diffusive motions. We have thought it right,
however, to consider it as a distinct species, on account of
its remarkable difference from the last two; for the simple
motion of assimilation transforms the bodies themselves, so
that if you remove the first agent, you diminish not the
effect of those which succeed; thus, neither the first light-
ing of flame, nor the first conversion into air, are of any
importance to the flame or air next generated. So, also,
the motion of excitement still continues for a considerable
time after the removal of the first agent, as in a heated
body on the removal of the original heat, in the excited
iron on the removal of the magnet, and in the dough on
the removal of the leaven. But the motion of impression,
although diffusive and transitive, appears, nevertheless, to
depend on the first agent, so that upon the removal of the
latter the former immediately fails and perishes; for which
reason also it takes effect in a moment, or at least a very
short space of time. We are wont to call the two former
motions the motions of the generation of Jupiter, because
when born they continue to exist; and the latter, the mo-
tion of the generation of Saturn, because it is immediately
devoured and absorbed. It may be seen in three instances:
1, in the rays of light; 2, in the percussions of sounds; 8,
in magnetic attractions as regards communication. For, on
the removal of light, colors and all its other images disap-
pear, as on the cessation of the first percussion and the
vibration of the body, sound soon fails, and although

NOVUM ORGANUM 261

sounds are agitated by the wind, like waves, yet it is
to be observed, that the same sound does not last during
the whole time of the reverberation. Thus, when a bell
is struck, the sound appears to be continued for a consid-
erable time, and one might easily be led into the mistake
of supposing it to float and remain in the air during the
whole time, which is most erroneous.” -For the reverbera-
tion is not one identical sound, but the repetition of sounds,
which is made manifest by stopping and confining the sono-
rous body; thus, if a bell be stopped and held tightly, so
as to be immovable, the sound fails, and there is no further
reverberation, and if a musical string be touched after the
first vibration, either with the finger (as in the harp), ora
quill (as in the harpsichord), the sound immediately ceases.
if the magnet be removed the iron falls. The moon, how-
ever, cannot be removed from the sea, nor the earth’ from a
heavy falling body, and we can, therefore, make no experi-
ment upon them; but the case is the same.

Let the fourteenth motion be that configuration or po-
sition, by which bodies appear to desire a peculiar situa-
tion, collocation, and configuration with others, rather than
union or separation. This is a very abstruse notion, and
has not been well investigated; and, in some instances,
appears to occur almost without any cause, although we

. 89 Aristotle’s doctrine, that sound takes place when bodies strike the air,
which the modern science of acoustics has completely established, was rejected
by Bacon in a treatise upon the same subject: ‘‘The collision or thrusting of
air,”’ he says, ‘‘which they will have to be the cause of sound, neither denotes
the form nor the latent process of sound, but is a term of ignorance and of
superficial contemplation.’’ To get out of the difficulty, he betook himself to
his theory of spirits, a species of phenomena which he constantly introduces
to give himself the air of explaining things he could not understand, or would
not admit upon the hypothesis of his opponents. —Zd.

262 . NOVUM ORGANUM

be mistaken in supposing this to be really the case. For
if it be asked, why the heavens revolve from east to west,
rather than from west to east, or why they turn on poles
situate near the Bears, rather than round Orion or any
other part of the heaven, such a question appears to be
unreasonable, since these phenomena should be received as
determinate and the objects of our experience. There are,
indeed, some ultimate and self-existing phenomena in na-
ture, but those which we have just mentioned are not to
be referred to that class: for we attribute them to a cer-
tain harmony and consent of the universe, which has not
yet been properly observed. But if the motion of the
earth from west to east be allowed, the same question may
be put, for it must also revolve round certain poles, and
why should they be placed where they are, rather than
elsewhere? The polarity and variation of the needle come
under our present head. There is also observed in both
natural and artificial bodies, especially solids rather than
fluids, a particular collocation and position of parts, resem-
bling hairs or fibres, which should be diligently investi-
gated, since, without a discovery of them, bodies cannot be
conveniently controlled or wrought upon. The eddies ob-
servable in liquids by which, when compressed, they suc-
cessively raise different parts of their mass before they can
escape, so as to equalize the pressure, is more correctly
assigned to the motion of liberty.

Let the fifteenth motion be that of transmission or of
passage, by which the powers of bodies are more or less
impeded or advanced by the medium, according to the
nature of the bodies and their effective powers, and also
according to that of the medium. For one medium is
adapted to light, another to sound, another to heat and

NOVUM ORGANUM 263

cold, another to magnetic action, and so on with regard
to the other actions.

Let the sixteenth be that which we term the royal or
political motion, by which the predominant and governing
parts of any body check, subdue, reduce, and regulate the
others, and force them to unite, separate, stand still, move,
or assume a certain position, not from any inclination of
their own, but according to a certain order,.and as best
suits the convenience of the governing part, so that there
is a sort of dominion and civil government exercised by
the ruling part over its subjects. The motion is very con-
spicuous in the spirits of animals, where, as long as it is in
force, it tempers all the motions of the other parts. It is
found in a less degree in other bodies, as we have observed
in blood and urine, which are not decomposed until the
spirit, which mixed and retained their parts, has been
emitted or extinguished. Nor is this motion peculiar to
spirits only, although in most bodies the spirit predomi-
nates, owing to its rapid motion and penetration; for the
erosser parts predominate in denser bodies, which are not
filled with a quick and active spirit (such as exists in
quicksilver or vitriol), so that unless this check or yoke be
thrown off by some contrivance, there is no hope of any
transformation of such bodies. And let not any one sup-
pose that we have forgotten our ‘subject, because we speak
of predominance in this classification of motions, which is |
made entirely with the view of assisting the investigation |
of wrestling instances, or instances of predominance. For /
we do not now treat of the general predominance of motions
or powers, but of that of parts in whole bodies, which con-
stitutes the particular species here considered.

Let the seventeenth motion be the spontaneous motion

264 NOVUM ORGANUM

of revolution, by which bodies having a tendency to move,
and placed in a favorable situation, enjoy their peculiar
nature, pursuing themselves and nothing else, and seek-
ing, as it were, to embrace themselves. For bodies seem
either to move without any limit, or to tend toward a limit,
arrived at which they either revolve according to their
peculiar nature, or rest. Those which are favorably situ-
ated, and have a tendency to motion, move in a circle with
an eternal and unlimited motion; those which are favor-
ably situated and abbor motion, rest. Those which are
not favorably situated move in a straight line (as their
shortest path), in order to unite with others of a congenial
nature. This motion of revolution admits of nine differ-
ences: 1, with regard to the centre about which the bodies
move; 2, the poles round which they move; 8, the circum-
ference or orbit relatively to its distance from the centre;
4, the velocity, or greater or less speed with which they -
revolve; 5, the direction of the motion as from east to
west, or the reverse; 6, the deviation from a perfect circle,
by spiral lines at a greater or less distance from the centre;
7, the deviation from the circle, by spiral lines at a greater
or less distance from the poles; 8, the greater or less dis-
tance of these spirals from each other; 9, and lastly, the
variation of the poles if they be movable; which, however,
only affects revolution when circular. The motion in ques-
tion is, according to common and long-received opinion,
considered to be that of the heavenly bodies. There ex-
ists, however, with regard to this, a considerable dispute
between some of the ancients as well as moderns, who have
attributed a motion of revolution to the earth. A much
more reasonable controversy, perhaps, exists (if it be nota
matter beyond dispute), whether the motion in question (on

NOVUM ORGANUM 265

the hypothesis of the earth’s being fixed) is confined to the
heavens, or rather descends and is communicated to the air
and water. The rotation of missiles, as in darts, musket-
balls, and the like, we refer entirely to the motion of liberty.

Let the eighteenth motion be that of trepidation, to
which (in the sense assigned to it by astronomers) we do
not give much credit; but in our serious and general search
after the tendencies of natural bodies, this motion occurs,
and appears worthy of forming a distinct species. It is the
motion of an (as it were) eternal captivity; when bodies,
for instance, being placed not altogether according to their
nature, and yet not exactly ill, constantly tremble, and are
restless, not contented with their position, and yet not dar-
ing to advance. Such is the motion of the heart and pulse
of animals, and it must necessarily occur in all bodies which
are situated in a mean state, between conveniences and
inconveniences; so that being removed from their proper
position, they strive to escape, are repulsed, and again
continue to make the attempt.

Let the nineteenth and last motion be one which can
scarcely be termed a motion, and yet is one; and which we
may call the motion of repose, or of abhorrence of motion.
It is by this motion that the earth stands by its own weight,
while its extremes move toward the middle, not to an im-
aginary centre, but in order to unite. It is owing to the
same tendency, that all bodies of considerable density
abhor motion, and their only tendency is not to move,
which nature they preserve, although excited and urged

% The motion of trepidation, as Bacon calls it, was attributed by the ancient
astronomers to the eight spheres, relative to the precession of the equinoxes. _
Galileo was the first to observe this kind of lunar motion.—£d. A

266 NOVUM ORGANUM

in a variety of ways to motion. But if they be compelled
to move, yet do they always appear anxious to recover
their former state, and to cease from motion, in which re-
spect they certainly appear active, and attempt it with suffi-
cient swiftness and rapidity, as if fatigued, and impatient
of delay. We can only have a partial representation of
this tendency, because with us every tangible substance is
not only not condensed to the utmost, but even some spirit
is added, owing to the action and concocting influence of
the heavenly bodies.

We have now, therefore, exhibited the species, or sim-
ple elements of the motions, tendencies, and active powers,
which are most universal in nature; and no small portion
of natural science has been thus sketched out. We do not,
however, deny that other instances can perhaps be added,
and our divisions changed according to some more natural
order of things, and also reduced to a less number; in which
respect we do not allude to any abstract classification, as if
one were to say, that bodies desire the preservation, exal-
tation, propagation, or fruition of their nature; or, that
motion tends to the preservation and benefit either of the
universe (as in the case of those of resistance and connec-
tion), or of extensive wholes, as in the case of those of the
greater congregation, revolution, and abhorrence of motion,
or of particular forms, as in the case of the others. For
although such remarks be just, yet, unless they terminate
in matter and construction, according to true definitions,
they are speculative, and of little use. In the meantime,
our classification will suffice, and be of much use in the
consideration of the predominance of powers, and examin-
ing the wrestling instances which constitute our present
subject.

NOVUM ORGANUM 267

For of the motions here laid down, some are quite in-
vincible, some more powerful than others, which they con-
fine, check, and modify; others extend to a greater distance,
others are more immediate and swift, others strengthen,
increase, and accelerate the rest.

The motion of resistance is most adamantine and invin-
cible. We are yet in doubt whether such be the nature of
that of connection; for we cannot with certainty determine
whether there be a vacuum, either extensive or intermixed
with matter. Of one thing, however, we are satisfied, that
the reason assigned by Leucippus and Democritus for the
introduction of a vacuum (namely, that the same bodies
could not otherwise comprehend, and fill greater and less
spaces) is false. For there is clearly a folding of matter,
by which it wraps and unwraps itself in space within cer-
tain limits, without the intervention of a vacuum. Nor is
there two thousand times more of vacuum in air than in
gold, as there should be on this hypothesis; a fact demon-
strated by the very powerful energies of fluids (which would
otherwise float like fine dust in vacuo), and many other
proofs. The other motions direct, and are directed by each
other, according to their strength, quantity, excitement,
emission, or the assistance or impediments they meet with.

For instance; some armed magnets hold and support
iron of sixty times their own weight; so far does the mo-
tion of lesser congregation predominate over that of the
greater; but if the weight be increased, it yields. A lever
of a certain strength will raise a given weight, and so far
the motion of liberty predominates over that of the greater
congregation, but if the weight be greater, the former
motion yields. A piece of leather stretched to a certain

point does not break, and so far the motion of continuity
ScrencE--- Vol. 23 -12

268 NOVUM ORGANUM

predominates over that of tension, but if the tension be
greater, the leather breaks, and the motion of continuity
yields. A certain quantity of water flows through a chink,
and so far the motion of greater congregation predominates
over that of continuity, but if the chink be smaller it yields.
If a musket be charged with ball and powdered sulphur
alone, and fire be applied, the ball is not discharged, in
which case the motion of greater congregation overcomes
that of matter; but when gunpowder is used, the motion of
matter in the sulphur predominates, being assisted by that
motion, and the motion of avoidance in the nitre; and so
of the rest. For wrestling instances (which show the pre-
dominance of powers, and in what manner and proportion
they predominate and yield) must be searched for with
active and industrious diligence.

The methods and nature of this yielding must also be
diligently examined, as for instance, whether the motions
completely cease, or exert themselves, but are constrained.
For in the bodies with which we are acquainted, there is no
real but an apparent rest, either in the whole or in parts.
This apparent rest is occasioned either by equilibrium, or
the absolute predominance of motions. By equilibrium,
as in the scales of the balance, which rest if the weights
be equal. By predominance, as in perforated jars, in which
the water rests, and is prevented from falling by the pre.
dominance of the motion of connection. It is, however, to
be observed (as we have said before), how far the yielding
motions exert themselves. For if a man be held stretched
out on the ground against his will, with arms and legs
bound down, or otherwise confined, and yet strive with all
his power to get up, the struggle is not the less, although
ineffectual. The real state of the case (namely, whether

NOVUM ORGANUM 269

the yielding motion be, as it were, annihilated by the pre-
dominance, or there be rather a continued, although an in-
visible effort) will, perhaps, appear in the concurrence of
motions, although it escape our notice in their conflict.
For instance: let an experiment be made with muskets;
whether a musket-ball, at its utmost range in a straight
line, or (as it is commonly called) point-blank, strike with
less force when projected upward, where the motion of the
blow is simple, than when projected downward, where
the motion of gravity concurs with the blow.

The rules of such instances of predominance as occur
should be collected: such as the following; the more gen-
eral the desired advantage is, the stronger will be the mo-
tion; the motion of connection, for instance, which relates
to the intercourse of the parts of the universe, is more
powerful than that of gravity, which relates to the inter-
course of dense bodies only. Again, the desire of a private
good does not in general prevail against that of a public
one, except where the quantities are small. Would that
such were the case in civil matters!

XLIX. In the twenty-fifth rank of prerogative instances
we will place suggesting instances; such as suggest, or point
out, that which is advantageous to mankind; for bare power
and knowledge in themselves, exalt rather than enrich
human nature. We must, therefore, select from the gen-
eral store such things as are most useful to mankind. We
shall have a better opportunity of discussing these when
we treat of the application to practice; besides, in the work
of interpretation, we leave room, on every subject, for the
human or optative chart; for it is a part of science to make
judicious inquiries and wishes.

L. In the twenty-sixth rank of prerogative instances we

270 NOVUM ORGANUM

will place the generally useful instances. They are such
as relate to various points, and frequently occur, sparing
by that means considerable labor and new trials. The
proper place for treating of instruments and contrivances,
will be that in which we speak of the application to practice,
. and the methods of experiment. All] that has hitherto been
ascertained, and made use of, will be described in the par-
ticular history of each art. At present, we will subjoin a
few general examples of the instances in question.

Man acts, then, upon natural bodies (besides merely
bringing them together or removing them) by seven prin-
cipal methods: 1, by the exclusion of all that impedes and
disturbs; 2, by compression, extension, agitation, and the
like; 8, by heat and cold; 4, by detention in a suitable
place; 5, by checking or directing motion; 6, by peculiar
harmonies; 7, by a seasonable and proper alternation, series,
and succession of all these, or, at least, of some of them.

1. With regard to the first—common air, which is al-
ways at hand, and forces its admission, as also the rays of
the heavenly bodies, create much disturbance. Whatever,
therefore, tends to exclude them may well be considered as
generally useful. The substance and thickness of vessels
in which bodies are placed when prepared for operations
may be referred to this head. So also may the accurate
methods of closing vessels by consolidation, or the lutwm
sapientiv, as the chemists call it. The exclusion of air by
means of liquids at the extremity is also very useful, as
when they pour oil on wine, or the juices of herbs, which
by spreading itself upon the top like a cover, preserves
them uninjured from the air. Powders, also, are service-
able, for although they contain air mixed up in them, yet
they ward off the power of the mass of circumambient alr,

NOVUM ORGANUM 271

which is seen in the preservation of grapes and other fruits
in sand or flour. Wax, honey, pitch, and other resinous.
bodies, are well used in order to make the exclusion more
perfect, and to remove the air and celestial influence. We
have sometimes made an experiment by placing a vessel or
other bodies in quicksilver, the most dense of all substances
capable of being poured round others. Grottoes and subter-
raneous caves are of great use in keeping off the effects of
the sun, and the predatory action of air,.and in the north
of Germany are used for granaries. The depositing of
bodies at the bottom of water may be also mentioned here;
and [ remember having heard of some bottles of wine being
let down into a deep well in order to cool them, but left
there by chance, carelessness, and forgetfulness for several |
years, and then taken out; by which means the wine not
only escaped becoming flat or dead, but was much more —
excellent in flavor, arising (as it appears) from a more com-
plete mixture of its parts. But if the case require that
bodies should be sunk to the bottom of water, as in rivers
or the sea, and yet should not touch the water, nor be in-
closed in sealed vessels, but surrounded only by air, it
would be right to use that vessel which has been some-
times employed under water above ships that have sunk,
in order to enable the divers to remain below and breathe
occasionally by turns. It was of the following nature: A
hollow tub of metal was formed, and sunk so as to have its |
‘bottom parallel with the surface of the water; it thus carried
down with it to the bottom of the sea all the air contained
in the tub. It stood upon three feet (like a tripod), being
of rather less height than a man, so that, when the diver
was in want of breath, he could put his head into the
hollow of the tub, breathe, and then continue his work.

272 _ NOVUM ORGANUM

We hear that some sort of boat or vessel has now been
invented, capable of carrying men some distance under
water. Any bodies, however, can easily be suspended
under some such vessel as we have mentioned, which has
occasioned our remarks upon the experiment.

Another advantage of the careful and hermetical closing
of bodies is this—not only the admission of external air is
prevented (of which we have treated), but the spirit of
bodies also is prevented from making its escape, which
is an internal operation. Tor any one operating on natural
bodies must be certain as to their quantity, and that noth-
ing has evaporated or escaped, since profound alterations
take place in bodies, when art prevents the loss or escape
of any portion, while nature prevents their annihilation.
With regard to this circumstance, a false idea has prevailed
(which if true would make us despair of preserving quan-
tity without diminution), namely, that the spirit of bodies,
and air when rarefied by a great degree of heat, cannot be
so kept in by being inclosed in any vessel as not to escape
by the small pores. Men are led into this idea by the com-
mon experiments of a cup inverted over water, with a candle
or piece of lighted paper in it, by which the water is drawn
up, and of those cups which, when heated, draw up the
flesh. For they think that in each experiment the rarefied
air escapes, and that its quantity is therefore diminished,
by which means the water or flesh rises by the motion of
connection. This is, however, most incorrect. For the air
is not diminished in quantity, but contracted in dimen-
sions,’ nor does this motion of the rising of the water

91 Part of the air is expanded and escapes, and part is consumed by th
flame. When condensed, therefore, by the cold application, it cannot offer suf-

NOVUM ORGANUM 273.

begin till the flame is extinguished, or the air cooled, so
that physicians place cold sponges, moistened with water,
on the cups, in order to increase their attraction. There is,
therefore, no reason why men should fear much from the
ready escape of air: for although it be true that the most
solid bodies have their pores, yet neither air, nor spirit,
readily suffers itself to be rarefied to such an extreme de-
gree; just as water will not escape by a small chink.

2. With regard to the second of the seven above-
mentioned methods, we must especially observe, that com-
pression and similar violence have a most powerful effect
either in producing locomotion, and other motions of the
same nature, as may be observed in engines and projectiles,
or in destroying the organic body, and those qualities, which
consist entirely in motion (for all life, and every description
of flame and ignition are destroyed by compression, which
also injures and deranges every machine); or in destroying
those qualities which consist in position and a coarse differ-
ence of parts, as in colors; for the color of a flower when
whole, differs from that it presents when bruised, and the
same may be observed of whole and powdered amber; or
in tastes, for the taste of a pear before it is ripe, and of the
same pear when bruised and softened, is different, since
it becomes perceptibly more sweet. But such violence is of
little avail in the more noble transformations and changes
of homogeneous bodies, for they do not, by such means,
acquire any constantly and permanently new state, but one
that is transitory, and always struggling to return to its
former habit and freedom. It would not, however, be use-

ficient resistance to the external atmosphere to prevent the liquid or flesh from
being forced into the glass,

274 NOVUM ORGANUM

less to make some more diligent experiments with regard
to this; whether, for instance, the condensation of a per-
fectly homogeneous body (such as air, water, oil, and the
like) or their rarefaction, when effected by violence, can
become permanent, fixed, and, as it were, so changed, as
to become a nature. This might at first be tried by simple
perseverance, and then by means of helps and harmonies.
It might readily have been attempted (if we had but thought
of it), when we condensed water (as was mentioned above),
by hammering and compression, until it burst out. For we
ought to have left the flattened globe untouched for some
days, and then to have drawn off the water, in order to
try whether it would have immediately occupied the same
dimensions as it did before the condensation. If it had not
done so, either immediately, or soon afterward, the conden-
sation would have appeared to have been rendered constant;
if not, it would have appeared that a restitution took place,
and that the condensation had been transitory. Something
of the same kind might have been tried with the glass eggs;
the egg should have been sealed up suddenly and firmly,
after a complete exhaustion of the air, and should have been
allowed to remain so for some days, and it might then have
been tried whether, on opening the aperture, the air would
be drawn in with a hissing noise, or whether as much water
would be drawn into it when immersed, as would have been
drawn into it at first, if it had not continued sealed. For
it is probable (or, at least, worth making the experiment)
that this might have happened, or might happen, because
perseverance has a similar effect upon bodies which are a
little less homogeneous. A stick bent together for some
time does not rebound, which is not owing to any loss of
quantity in the wood during the time, for the same would

NOVUM ORGANUM 275

occur (after a larger time) in a plate of steel, which does
not evaporate. If the experiment of simple perseverance
should fail, the matter should not be given up, but other
means should be employed. For it would be no small ad-
vantage, if bodies could be endued with fixed and constant
natures by violence. Air could then be converted into
water by condensation, with other similar effects; for man
is more the master of violent motions than of any other
means.

8. The third of our seven methods is referred to that
great practical engine of nature, as well as of art, cold
and heat. Here, man’s power limps, as it were, with one
leg. For we possess the heat of fire, which is infinitely
more powerful and intense than that of the sun (as it
reaches us), and that of animals. But we want cold,” ex-
cept such as we can obtain in winter, in caverns, or by
surrounding objects with snow and ice, which, perhaps,
may be compared in degree with the noontide heat of the
sun in tropical countries, increased by the reflection of
mountains and walls. For this degree of heat and cold
can be borne for a short period only by animals, yet it
is nothing compared with the heat of a burning furnace,
or the corresponding degree of cold.*® Everything with us
has a tendency to become rarefied, dry and wasted, and noth-

% Heat can now be abstracted by a very simple process, till the degree of
cold be of almost any required intensity.— Hd.

93 Tt is impossible to compare a degree of heat with a degree of cold, without
the assumption of some arbitrary test, to which the degrees are to be referred.
In the next sentence Bacon appears to have taken the power of animal life to
support heat or cold as the test, and then the comparison can only be between
the degree of heat or of cold that will produce death.

The zero must be arbitrary which divides equally a certain degree of heat
from a certain degree of cold. —Ed.

276 NOVUM ORGANUM

ing to become condensed or soft, except by mixtures, and,
as it were, spurious methods. Instances of cold, therefore,
should be searched for most diligently, such as may be
found by exposing bodies upon buildings in a hard frost,
in subterraneous caverns, by surrounding bodies with snow
and ice in deep places excavated for that purpose, by let-
ting bodies down into wells, by burying bodies in quick-
silver and metals, by immersing them in streams which
petrify wood, by burying them in the earth (which the
Chinese are reported to do with their china, masses of
which, made for that purpose, are said to remain in the
ground for forty or fifty years, and to be transmitted to
their heirs as a sort of artificial mine) and the like. The
condensations which take place in nature, by means of cold,
should also be investigated, that by learning their causes,
they may be introduced into the arts; such as are observed
in the exudation of marble and stones, in the dew upon the
panes of glass in a room toward morning after a frosty
night, in the formation and the gathering of vapors under
the earth into water, whence spring fountains and the like.

Besides the substances which are cold to the touch,
there are others which have also the effect of cold, and
condense; they appear, however, to act only upon the
bodies of animals, and scarcely any further. Of these we
have many instances, in medicines and plasters. Some
condense the flesh and tangible parts, such as astringent
and inspissating medicines, others the spirits, such as
soporifics. There are two modes of condensing the spirits,
by soporifics or provocatives to sleep; the one by calming
the motion, the other by expelling the spirit. The violet,
dried roses, lettuces, and other benign or mild remedies, by
their friendly and gently cooling vapors, invite the spirits

NOVUM ORGANUM IN it ¢

to unite, and restrain their violent and perturbed motion.
Rose-water, for instance, applied to the nostrils in fainting
fits, causes the resolved and relaxed spirits to recover them-
selves, and, as it were, cherishes them. But opiates, and
the like, banish the spirits by their malignant and hostile
quality. If they be apphed, therefore, externally, the
spirits immediately quit the part and no longer readily
flow into it; but if they be taken internally, their vapor,
mounting to the head, expels, in all directions, the spirits
contained in the ventricles of the brain, and since these
spirits retreat, but cannot escape, they consequently meet
and are condensed, and are sometimes completely extin-
guished and suffocated; although the same opiates, when
taken in moderation, by a secondary accident (the conden-
sation which succeeds their union), strengthen the spirits,
render them more robust, and check their useless and in-
flammatory motion, by which means they contribute not a
little to the cure of diseases, and the prolongation of life.

The preparations of bodies, also, for the reception of cold
should not be omitted, such as that water a little warmed is
more easily frozen than that which is quite cold, and the
hike.

Moreover, since nature supplies cold so sparingly, we
must act like the apothecaries, who, when they cannot
obtain any simple ingredient, take a succedaneum, or quid
pro quo, as they term it, such as aloes for xylobalsamum,
cassia for cinnamon. Jn the same manner we should look
diligently about us, to ascertain whether there may be any
substitutes for cold, that is to say, in what other manner
condensation can be effected, which is the peculiar opera-
tion of cold. Such condensations appear hitherto to be of
four kinds only. 1. By simple compression, which is of lit-

278 NOVUM ORGANUM

tle avail toward permanent condensation, on account of the
elasticity of substances, but may still, however, be of some
assistance. 2. By the contraction of the coarser, after the
escape or departure of the finer parts of a given body; as is
exemplified in induration by fire, and the repeated heating
and extinguishing of metals, and the like. 8. By the
cohesion of the most solid homogeneous parts of a given
body, which were previously separated, and mixed with
others less solid, as in the return of sublimated mercury to
its simple state, in which it occupies much less space than
it did in powder, and the same may be observed of the
cleansing of all metals from their dross. 4. By harmony,
or the application of substances which condense by some
latent power. ‘These harmonies are as yet but rarely ob-
served, at which we cannot be surprised, since there is little
to hope for from their investigation, unless the discovery of
forms and confirmation be attained. With regard to ani-
mal bodies, it 1s not to be questioned that there are many
internal and external medicines which condense by har-
mony, aS we have before observed, but this action is rare
in inanimate bodies. Written accounts, as well as report,
have certainly spoken of a tree in one of the Tercera or
Canary Islands (for I do not exactly recoliect which) that
drips perpetually, so as to supply the inhabitants, in some
degree, with water; and Paracelsus says that the herb called
ros solis is filled with dew at noon, while the sun gives out
its greatest heat, and all other herbs around it are dry. We
treat both these accounts as fables; they would, however, if
true, be of the most important service, and most worthy of
examination. As to the honey-dew, resembling manna,
which is found in May on the leaves of the oak, we are of
opinion that it is not condensed by any harmony or peculi-

NOVUM ORGANUM 279

arity of the oak leaf, but that while it falls equally upon
other leaves it is retained and continues on those of the
oak, because their texture is closer, and not so porous as
that of most of the other leaves.”
With regard to heat, man possesses abundant means and
power; but his observation and inquiry are defective in
some respects, and those of the greatest importance, not-
withstanding the boasting of quacks. For the effects of
intense heat are examined and observed, while those of a
more gentle degree of heat, being of the most frequent oc-
currence in the paths of nature, are, on that very account,
least known. We see, therefore, the furnaces, which are
most esteemed, employed in increasing the spirits of bodies
to a great extent, as in the strong acids, and some chemical
oils; while the tangible parts are hardened, and, when the
volatile part has escaped, become sometimes fixed; the
homogeneous parts are separated, and the heterogeneous
incorporated and agglomerated in a coarse lump; and (what
is chiefly worthy of remark) the junction of compound
bodies, and the more delicate conformations are destroyed
and confounded. But the operation of a less violent heat
should be tried and investigated, by which more delicate
mixtures and regular conformations: may be produced and
elicited, according to the example of nature, and in imita-
tion of the effect of the sun, which we have alluded to in
the aphorism on the instances of alliance. For the works
of nature are carried on in much smaller portions, and in
more delicate and varied positions than those of fire, as we
now employ it. But man will then appear to have really
augmented his power, when the works of nature can be

%4 It may often be observed on the leaves of the lime and other trees.

280 NOVUM ORGANUM

imitated in species, perfected in power, and varied in quan-
tity; to which should be added the acceleration in point of
time. Rust, for instance, is the result of a long process,
but crocus martis is obtained immediately; and the same
may be observed of natural verdigris and_ceruse. Crystal
is formed slowly, while glass is blown immediately: stones
increase slowly, while bricks are baked immediately, etc.
In the meantime (with regard to our present subject) every
different species of heat should, with its peculiar effects, be
diligently collected and inquired into; that of the heavenly
bodies, whether their rays be direct, reflected, or refracted,
or condensed by a burning-glass; that of lightning, flame,
and ignited charcoal; that of fire of different materials,
either open or confined, straitened or overflowing, qualli-
fied by the different forms of the furnaces, excited by the
bellows, or quiescent, removed to a greater or less distance,
or passing through different media; moist heats, such as
the balneum Marie, and-the dunghill; the external and in-
ternal heat of animals; dry heats, such as the heat of ashes,
lime, warm sand; in short, the nature of every kind of heat,
and its degrees.

We should, however, particularly attend to the investi-
gation and discovery of the effects and operations of heat,
when made to approach and retire by degrees, regularly,
periodically, and by proper intervals of space and time.
For this systematical inequality is in truth the daughter of
heaven and mother of generation, nor can any great result
be expected from a vehement, precipitate, or desultory heat.
For this is not only most evident in vegetables, but in the
wombs of animals also there arises a great inequality of
heat, from the motion, sleep, food, and passions of the
female. The same inequality prevails in those subterrane-

NOVUM ORGANUM 281

ous beds where metals and fossils are perpetually forming,
which renders yet more remarkable the ignorance of some
of the reformed alchemists, who imagined they could attain
their object by the equable heat of lamps, or the like, burn-
ing uniformly. Let this suffice concerning the operation
and effects of heat; nor is it time for us to investigate them
thoroughly before the forms and conformations of bodies
have been further examined and brought to light. When
we have determined upon our models, we may seek, apply
and arrange our instruments.

4. The fourth mode of action is by continuance, the very
steward and almoner, as it were, of nature. We apply the
term continuance to the abandonment of a body to itself for
an observable time, guarded and protected in the meanwhile
from all external force. For the internal motion then com-
mences to betray and exert itself when the external and
adventitious is removed. The effects of time, however, are
far more delicate than those of fire. Wine, for instance,
cannot be clarified by fire as it is by continuance. Nor are
the ashes produced by combustion so fine as the particles
dissolved or wasted by the lapse of ages. The incorpora-
tions and mixtures, which are hurried by fire, are very
inferior to those obtained by continuance; and the various
conformations assumed by bodies left to themselves, such
as mouldiness, etc., are put a stop to by fire or a strong
heat. It is not, in the meantime, unimportant to remark
that there is a certain degree of violence in the motion of
bodies entirely confined; for the confinement impedes the
_ proper motion of the body. Continuance in an open ves-
sel, therefore, is useful for separations, and in one hermet-
ically sealed for mixtures, that in a vessel partly closed, but
admitting the air, for putrefaction. But instances of the

282 NOVUM ORGANUM

operation and effect of continuance must be collected dili-
gently from every quarter.

5. The direction of motion (which is the fifth method
of action) is of no small use. We adopt this term, when
speaking of a body which, meeting with another, either
arrests, repels, allows, or directs its original motion. This
is the case principally in the figure and position of vessels.
An upright cone, for instance, promotes the condensation
of vapor in alembics, but when reversed, as in inverted
vessels, it assists the refining of sugar. Sometimes a curved
form, or one alternately contracted and dilated, is required.
Strainers may be ranged under this head, where the opposed
body opens a way for one portion of another substance and
impedes the rest. Nor is this process or any other direction
of motion carried on externally only, but sometimes by one
body within another. Thus, pebbles are thrown into water
to collect the muddy particles, and syrups are refined by
the white of an egg, which glues the grosser particles to-
gether so as to facilitate their removal. Telesius, indeed,
rashly and ignorantly enough attributes the formation of
animals to this cause, by means of the channels and folds
of the womb. He ought to have observed a similar forma-
tion of the young in eggs which have no wrinkles or in-
equalities. One may observe a real result of this direction
of motion in casting and modelling.

6. The effects produced by harmony and aversion (which
is the sixth method) are frequently buried in obscurity; for
these occult and specific properties (as they are termed), the
sympathies and antipathies, are for the most part but a _
corruption of philosophy. Nor can we form any great
expectation of the discovery of the harmony which exists
between natural objects, before that of their forms and

NOVUM ORGANUM 283

simple conformations, for it is nothing more than the sym-
metry between these forms and conformations.

The greater and more universal species of harmony are
not, however, so wholly obscure, and with them, therefore,
we must commence. The first and principal distinction be-
tween them is this; that some bodies differ considerably in
the abundance and rarity of their substance, but correspond
in their conformation; others, on the contrary, correspond in
the former and differ in the latter. Thus the chemists have
well observed, that in their trial of first principles sulphur
and mercury, as it were, pervade the universe; their reason-
ing about salt, however, is absurd, and merely introduced
to comprise earthy dry fixed bodies. In the other two,
indeed, one of the most universal species of natural har-
mony manifests itself. Thus there is a correspondence be-
tween sulphur, oil, greasy exhalations, flame, and, perhaps,
the substance of the stars. On the other hand, there is a
like correspondence between mercury, water, aqueous vapor,
air, and, perhaps, pure inter-sidereal ether. Yet do these
two quaternions, or great natural tribes (each within its own
limits), differ immensely in quantity and density of sub-
stance, while they generally agree in conformation, as is
manifest in many instances. On the other hand, the metals
agree in such quantity and density (especially when com-
pared with vegetables, etc.), but differ in many respects in
conformation. Animals and vegetables, in like manner,
vary in their almost infinite modes of conformation, but
range within very limited degrees of quantity and density
of substance.

The next most general correspondence is that between
individual bodies and those which supply them by way of
menstruum or support. Inquiry, therefore, must be made

984 - NOVUM ORGANUM

as to the climate, soil, and depth at which each metal is
generated, and the same of gems, whether produced in rocks
or mines, also as to the soil in which particular trees, shrubs,
and herbs, mostly grow and, as it were, delight; and as to
the best species of manure, whether dung, chalk, sea sand,
or ashes, etc., and their different propriety and advantage
according to the variety of soils. So also the grafting and
setting of trees and plants (as regards the readiness of graft-
ing one particular species on another) depends very much
upon harmony, and it would be amusing to try an experi-
ment I have lately heard of, in grafting forest trees (garden
trees alone having hitherto been adopted), by which means
the leaves and fruit are enlarged, and the trees produce |
more shade. The specific food of animals again should be
observed, as well as that which cannot be used. Thus the
carnivorous cannot be fed on herbs, for which reason the
order of feuilletans, the experiment having been made,
has nearly vanished; human nature being incapable of
supporting their regimen, although the human will has
more power over the bodily frame than that of other
animals. The different kinds of putrefaction from which
animals are generated should be noted.

The harmony of principal bodies with those subordinate
to them (such indeed may be deemed those we have alluded
to above) are sufficiently manifest, to which may be added
those that exist between different bodies and their objects,
and, since these latter are more apparent, they may throw
creat light when well observed and diligently examined
upon those which are more latent.

The more internal harmony and aversion, or friendship
and enmity (for superstition and folly have rendered the
terms of sympathy and antipathy almost disgusting), have

NOVUM ORGANUM 985

been either falsely assigned,.or mixed with fable, or most
rarely discovered from neglect. For if one were to allege
that there is an enmity between the vine and the cabbage,
because they will not come up well when sown together,
there is a sufficient reason for it in the succulent and ab-
sorbent nature of each plant, so that the one defrauds the
other. Again, 1f one were to say that there is a harmony
and friendship between the corn and the corn-flower, or the
wild poppy, because the latter seldom grow anywhere but
in cultivated soils, he ought rather to say, there is an enmity
between them, for the poppy and the corn-flower are pro-
duced and created by those juices which the corn has left
and rejected, so that the sowing of the corn prepares the
ground for their production. And there are a vast number
of similar false assertions. As for fables, they must be
totally exterminated. There remains, then, but a scanty
supply of such species of harmony as has borne the test
of experiment, such as that between the magnet and iron,
gold and quicksilver, and the like. In chemical experi-
ments on metals, however, there are some others worthy of
notice, but the greatest abundance (\where the whole are so
few in numbers) is discovered in certain medicines, which,
from their occult and specific qualities (as they are termed),
affect particular limbs, humors, diseases, or constitutions.
Nor should we omit the harmony between the motion and
phenomena of the moon, and their effects on lower bodies,
which may be brought together by an accurate and honest
selection from the experiments of agriculture, navigation,
and medicine, or of other sciences. By as much as these
general instances, however, of more latent harmony, are
rare, with so much the more diligence are they to be in-
quired after, through tradition, and faithful and honest

286 NOVUM ORGANUM

reports, but without rashness and credulity, with an anx-
ious and, as it were, hesitating degree of reliance. There
remains one species of harmony which, though simple in
its mode of action, is yet most valuable in its use, and must
by no means be omitted, but rather diligently investigated.
It is the ready or difficult coition or union of bodies in com-
position, or simple juxtaposition. For some bodies readily
and willingly mix, and are incorporated, others tardily and |
perversely; thus powders mix best with water, chalk and
ashes with oils, and the like. Nor are these instances of
readiness and aversion to mixture to be alone collected,
but others, also, of the collocation, distribution, and diges-
tion of the parts when mingled, and the predominance after
the mixture is complete.

7. Lastly, there remains the seventh, and last of the
seven, modes of action; namely, that by the alternation
and interchange of the other six; but of this, it will not
be the right time to offer any examples, until some deeper
investigation shall have taken place of each of the others.
The series, or chain of this alternation, in its mode of appli-
cation to separate effects, is no less powerful in its operation
than difficult to be traced. But men are possessed with the
most extreme impatience, both of such inquiries, and their
practical application, although it be the clew of the laby-
rinth in all greater works. Thus far of the generally useful
instances.

LI. The twenty-seventh and last place we will assign
to the magical instances, a term which we apply to those
where the matter or efficient agent is scanty or small, in
comparison with the grandeur of the work or effect pro-
duced; so that even when common they appear miraculous,
some at first sight, others even upon more attentive obser-

NOVUM ORGANUM 287

vation. Nature, however, of herself, supplies these but
sparingly. What she will do when her whole store is
thrown open, and after the discovery of forms, processes,
and conformation, will appear hereafter. As far as we can
yet conjecture, these magic effects are produced in three
ways, either by self-multiplication, as in fire, and the
poisons termed specific, and the motions transferred and
multiplied from wheel to wheel; or by the excitement, or,
as it were, invitation of another substance, as in the magnet,
which excites innumerable needles without losing or dimin-
ishing its power; and again in leaven, and the like; or by
the excess of rapidity of one species of motion over another,
as has been observed in the case of gunpowder, cannon,
and mines. The two former require an investigation of
harmonies, the latter of a measure of motion. Whether
there be any mode of changing bodies per minima (as it
is termed), and transferring the delicate conformations
of matter, which is of importance in all transformations
of bodies, so as to enable art to effect, in a short time, that
which nature works out by divers expedients, is a point of
which we have as yet no indication. But, as we aspire
to the extremest and highest results in that which is solid
and true, so do we ever detest, and, as far as in us lies,
expel all that is empty and vain.

LIl. Let this suffice as to the respective dignity of pre-
rogatives of instances. But it must be noted, that in this
our organ, we treat of logic, and not of philosophy. Seeing,
however, that our logic instructs and informs the under-
standing, in order that it may not, with the small hooks, as
it were, of the mind, catch at, and grasp mere abstractions,
but rather actually penetrate nature, and discover the prop-
erties and effects of bodies, and the determinate laws of

288 NOVUM ORGANUM

their substance (so that this science of ours springs from
the nature of things, as well as from that of the mind); it
is not to be wondered at, if it have been continually inter-
spersed and illustrated with natural observations and ex-
periments, as instances of our method. The prerogative
Instances are, as appears from what has preceded, twenty-
seven in number, and are termed, solitary instances, migrat-
ing instances, conspicuous instances, clandestine instances,
constitutive instances, similar instances, singular instances,
deviating instances, bordering instances, instances of power,
accompanying and hostile instances, subjunctive instances,
instances of alliance, instances of the cross, instances of
divorce, instances of the gate, citing instances, instances
of the road, supplementary instances, lancing instances, in-
stances of the rod, instances of the course, doses of nature,
wrestling instances, suggesting instances, generally useful
instances, and magical instances. The advantage, by which
these instances excel the more ordinary, regards specifically
either theory or practice, or both. With regard to theory,
they assist either the senses or the understanding; the senses,
as in the five instances of the lamp; the understanding,
either by expediting the exclusive mode of arriving at the
form, as in solitary instances, or by confining, and more
immediately indicating the affirmative, as in the migrating,
conspicuous, accompanying, and subjunctive instances; or
by elevating the understanding, and leading it to general
and common natures, and that either immediately, as in the
clandestine and singular instances, and those of alliance; or
very nearly so, as in the constitutive; or still less so, as in
the similar instances; or by correcting the understanding
of its habits, as in the deviating instances; or by leading to
the grand form or fabric of the universe, as in the borderirs

NOVUM ORGANUM 289

instances; or by guarding it from false forms and causes,
as in those of the cross and of divorce. With regard to
practice, they either point it out, or measure, or elevate
it. They point it out, either by showing where we must
commence in order not to repeat the labors of others, as in
the instances of power; or by inducing us to aspire to that
which may be possible, as in the suggesting instances; the
four mathematical instances measure it. ‘The generally use-
ful and the magical elevate it.

Again, out of these twenty-seven instances, some must
be collected immediately, without waiting for a particular

investigation of properties. Such are the similar, singular,

deviating, and bordering instances, those of power, and of
the gate, and suggesting, generally useful, and magical in-
stances; for these either assist and cure the understanding
and senses, or furnish our general practice. The remainder
are to be collected when we finish our synoptical tables for
the work of the interpreter, upon any particular nature;
for these instances, honored and gifted with such preroga-
tives, are hike the soul amid the vulgar crowd of instances,
and (as we from the first observed) a few of them are worth
a multitude of the others. When, therefore, we are forming
our tables they must be searched out with the greatest zeal,
and placed in the table. And, since mention must be made
of them in what follows, a treatise upon their nature has
necessarily been prefixed. We must next, however, pro-
ceed to the supports and corrections of induction, and
thence to concretes, the latent process, and latent confor-
mations, and the other matters, which we have enumerated
in their order in the twenty-first aphorism, in order that,
like good and faithful guardians, we may yield up their
fortune to mankind upon the emancipation and majority

ie

290 NOVUM ORGANUM

of their understanding; from which must necessarily follow
an improvement of their estate, and an increase of their
power over nature. For man, by the fall, lost at once hig
state of innocence, and his empire over creation, both of
which can be partially recovered even in this life, the first
by religion and faith, the second by the arts and sciences.
For creation did not become entirely and utterly rebellious
by the curse, but in consequence of the Divine decree, ‘‘in
the sweat of thy brow shalt thou eat bread,’’ she is com-
pelled by our labors (not assuredly by our disputes or
magical ceremonies), at length, to afford mankind in some
degree his bread, that is to say, to supply man’s daily wants.

END OF ‘‘NOVUM ORGANUM’”’

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