Imágenes de páginas

follow the sun, by reason of neediness of nature, in the weaker fires of Venus and Mercury; the rather, because Galileo has discovered certain small wandering stars attendant upon Jupiter. These then are the things I see, standing as I do on the threshold of natural history and philosophy; and it may be that the deeper any man has gone into natural history the more he will approve them. Nevertheless I repeat once more that I do not mean to bind myself to these; for in them as in other things I am certain of my way, but not certain of my position. Meanwhile, I have introduced them by way of interlude, lest it be thought that it is from vacillation of judgment or inability to affirm that I prefer negative questions. I will preserve therefore, even as the heavenly bodies themselves do (since it is of them I am discoursing), a variable constancy.





Note. The parts of the Index printed in Italic refer to the Editors' Prefaces and Notes.

Abecedarium naturæ, primumque in operibus
Divinis tirocinium, i. 461, 565, 566;
ii. 15, 85-88.

naturarum abstractarum, ii. 17.

Abel, an image of the contemplative state, iii.

pastor, imago vitæ contemplativæ, i. 465.
Aber-Barry, holes in cliff at, where subterra-
nean winds are heard, v. 161.
juxta Sabrinam, ii. 40.

Abietis lignum minime densum, ii. 248, 249.
Abilities, regulation of learning according to
the, iii. 415.

Abridgements of learning condemned, iv. 494.
Abstracta et concreta, i. 551.
Academiæ: curriculum studiorum diligenter ob-
servandum, interdum mutandum, i. 490.
odium novitatis injuria scientiæ, iii. 597.
Acatalepsia, i. 219; iv. 111.

of the Platonists, iv. 69, 75.
Academicorum, iii. 580, 607.
an opinio sincere habita, i. 622.
desperatio ejus, i. 151.

Acceleration, ii. 442-448.

of falling bodies, i. 625.

of the clarification of liquors, i, 442–446.
See Clarification.

of putrefaction, ii. 451-453. See Putre-

of birth, two causes of, ii. 457, 458.

early ripening of the embryo, ii. 457.
weakness of the mother's body, ib.
child born at seven months more
healthy than at eight, why, ib.
of growth and stature, three causes of,
ii. 458, 459.

plenty of nourishment, ii. 458.
nourishment of an opening nature, ib.
excitement of the natural heat, ib.

of germination. See Germination.
of maturation, ii. 445-450, 550.



Accent of sentences, iv. 442, 444.

Accident, the originator of all the noblest dis-
coveries, iv. 17Ï.

Accidents of words, iii. 401.

Accumulation of laws, how to remedy, v. 98

Aceti aspersione turbinem compesci, ii. 50.
Acosta, his History of the Indies quoted by
Bacon, ii. 4, 32, 40.

his theory of tides, iii. 45, 46.

his statements as to the winds in the
South Sea, whether correct, v. 152.
on climate of Peru, v. 161.

Acoustics. See Sound.

Acroamatic method of discourse, iv. 450,
Acting, art of, used in education, iii. 417.
Actio cum contemplatione conjuncta, iii. 462,

theatralis in dicendo, i. 711.

Action and contemplation, conjunction of, i.

Actium, battle of, v. 86.

Active good, pre-eminence of, iii. 424.

difference between public good and, iii.

life, why to be preferred, iii. 422.
Acus ferreæ verticitas, i. 299, 300, 321.
nautica, i. 627; iii. 610-612.
Adam, sin of, iv. 320. See Fall of Man.
Adamant does not hinder the power of the
magnet, v. 404.

virtutes magnetis non impedit, ii. 312.
Admiralty Manual of Scientific Inquiry, i. 390.
Admiratio ad prolongationem vitæ plurimum
facit, ii. 172.

proles raritatis, i. 285.
Adrian, iii. 304.

Adrianus imperator, i. 472.

Adulatio, antitheta de eâ, i. 703.

Advancement of Learning, preface to, i.

Advancement of Learning-continued.

date of, i. 415.

original design of, i. 415, 416, 418.
Advancement of fortune, knowledge relating
to, deficient, iii. 455.

the doctrine of, v. 57, 78.

Ægyptii brutorum effigies in templis cur posue-
runt, iii. 608.

Enigmatica dicendi methodus, i. 665.
Eoli regnum, ii. 39.

Aer corpora naturalia multum turbat, i. 350.
exclusio ejus, i. 350—352.

aditus ejus, cur prohibendus, i. 351.
exclusio ambientis ad diuturnitatem

dupliciter innuit, ii. 175, 220.
excluditur duobus modis, ii. 175—

per clausuram meatuum, ii. 176.
per oppletionem meatuum, ib.
salubritas ejus res occulta, ii. 150, 190.
experimentum salubritatis, ii. 150.
æqualitas magis quam puritas spec-
tanda, ib.

mutatio ejus in peregrinando bona,

tanquam res indigens omnia avide arripit,
ii. 217.

per calorem dilatatur simpliciter, ii. 267,

humiditatem terræ deprædatur et in se
vertit, ii. 281.

rarefaction is quantæ capax, ii. 283.
experimentum vitrei ovi, ib.

dilatatus figi potest ut se restituere non
laboret, ii. 290.

ipse in aquam in regionibus supernis ver-
titur, ii. 293.

versio aeris in aquam optativa, ii. 604.
spatio notabili contrahi potest, iii. 16.
Anaximenes pro principio rerum posuit,
iii. 88, 89.

opera ejus in Universitate rerum, ib.
chaos secundum, iii. 89.

impulsu densatus frigidior, iii. 701.
in sonorum generatione densatus, ib.
in globo plumbeo compressus, iii. 703.
in vasa clausa, ib.

per respirationem receptus, iii. 704. See

Esculapius, god of healing, iv. 379, 381.

and Circe, fable of, iii. 371.

Esop, fable of the Frogs and the Well, iv.

of the Fox and Cat, iv. 471.

fabula de Vulpe et Fele, i. 687.
Etas instar ignis lambentis, ii. 304.

de decursu ætatis, historia conscribenda,
i. 408.

Eternitas materiæ, iii. 110.

terræ, iii. 749, 750.

ex rationibus motus non probanda, iii. 750.
motus cœli circularis argumentum nullum,
iii. 754.

ethnicâ jactantiâ, cœlo soli attributa, iii.

scripturis sacris, terræ et cœlo ex æquo, ib.

Ether purum et immutabile, iii. 751.
historia ejus, iii. 733.

Ethera sive spatia coli interstellaria, iii.

an unus perpetuus fluor, iii. 744.
Ethiopia, ii. 473.

Aetites, or eagle stone, ii. 401.

Affability, Cicero's commendation of, iii. 446.
Affectation, unseemliness of, iii. 446.

antitheses for and against, iv. 486.

Affections controlled by eloquence, iii. 410.
inquiry touching the, iii. 437.

poets and historians, the best doctors of
the, iii. 438.

their relation to reason, iv. 457.

and perturbations of the mind, v. 23.

neglected by Aristotle in his Ethics, b
Affectus intuentur præcipue bonum in præ-
sentiâ, i. 673.

loco morborum animi sunt, i. 735.
Affinitates chymicæ, i. 362.

Affinity, chemical, iv. 245.

"Africa semper aliquid monstri parit," why,

ii. 492.

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condensing of, whether the cause of in-
crease of weight in growing plants,
ii. 350, 351.

in onions, ii. 350.

great sempervive, ii. 350, 351.
lilies, ii. 350.

sprouts from stumps of trees, ib.
test by weighing, ib.

commixture of air and flame, and
force resulting, ii. 351, 352.
explosive bodies, ii. 351.

vital spirits of living creatures, ii. 352.
temperature of, cooled by contact with
water, without imbibing moisture,
ii. 627.

on bright nights colder than on
cloudy, ii. 628.

close, warmer than open, ib.
middle region of, cold, iii. 645.
when moved in colder, ii. 649.
in things fibrous is warm, ib.
congealing of, experiment proposed,
ii. 462.

salubrity of, fresh and healthful must be

selected for habitation, ii. 592, 605.
how to test salubrity of, ii. 592, 605.
necessity of having healthful indoors,
ii. 651.

salubrity of, how known, v. 297.
at what hours best taken, ib.
healthy from what quarters, ib.
poisoned by effluvia, ii. 646.

concussion of the, ii. 395, 396.

exclusion of, disturbance in bodies caused

by its operation, iv. 233.
means of exclusion, iv. 234.
advantage of its exclusion, ib.
tends to prolong life, v. 283, 329.
excluded in two ways, v. 284.
1. by closing the pores.

2. by filling them up.

a needy thing, seizing everything with
avidity, v. 325.

dilation of, dilated simply by heat, v.
361, 362.

licks up the moisture of the earth

and turns it into itself, v. 376.

how far capable of rarefaction, v.

whether when rarified it can be so
fixed, v. 386.

admits of considerable contraction, v.
selected by Anaximenes as the one principle
of things, v. 471.

its importance in the universe, ib.

a second chaos, ib. See Aer.

Albedo, forma ejus, i. 270, 566.

Alchemist, dischargeth his art upon his own

errors, iii. 497.

Alchemists, varieties of, ii. 448, 620.
useful inventions of, iv. 84.

Alchemy, iii. 289, 362.

Alchymia, i. 456.

Alchymistæ, utilia multa invenerunt, i. 193.
Alegant, ii. 363.

Alexander the Great, sweetness of his skin, ii.

discovery of his body by Augustus Cæsar,
ii. 590.

an example of learning and military ex-
cellence, iii. 269, 307.

his education, iii. 308.

his estimation of learning, ib.

his excellent use of metaphor, iii. 310.
his speech concerning Diogenes, iii. 308.
his remarkable sayings, iii. 308, 309,

his reprehension and use of logic, iii.

his mode of warfare, iv. 328.

Alexander Magnus, Aristotelis discipulus, i.


ausus vana contemnere, i. 459.

exemplum arctæ conjunctionis militaria
virtutis et literariæ, i. 475, 476, 479.
ab Aristotele educatus, i. 473.
ab eruditis semper comitatus, ib.
admirator Homeri, ib.

apophthegma ejus circa Diogenem, ib.
de mortalitate ib.

de sanguine suo, i. 474.
ad Cassandrum, ib.

ad Callisthenem, ib.

de Antipatro, ib.

de Hephæstione et Cratero, i. 475.

ad Parmenidem, ib.

Alexander Borgia, de expeditione Gallorum
Neapolitanâ, i. 578.*

of the French at Naples, iv. 371.
Aliment, iii. 485.

change of necessary, when the effect has
been weakened by custom, ii. 369.
necessary to the human body, how often,
v. 314.

rapid consumption of, by the living
spirit, ib.

proportion of secretions to, ib.
causes of atrophy, v. 315.

of the stars, v. 540.

Alimentatio per exterius, ii. 222.

historia alimentationis conscribenda, i.

Alimentation by separation, i. 339.

promoted in four ways, iv. 392, 393.
of plants and of animals, difference noted
by Aristotle, v. 226.

the source of repair in living bodies,
v. 220.

nourishments, by what rules to be selected,
v. 241, 242.

orifices of reception, v. 242.

modes of assimilation, ib.

degrees of nourishment, v. 243.

whether it can be taken by other ways
than through the stomach, v. 243, 331.


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