Experimental notes of the mechanical origine or production of fixtness.
About this Item
Title
Experimental notes of the mechanical origine or production of fixtness.
Author
Boyle, Robert, 1627-1691.
Publication
London :: Printed by E. Flesher, for R. Davis Bookseller in Oxford.,
1675.
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Subject terms
Solids -- Early works to 1800.
Link to this Item
http://name.umdl.umich.edu/A69611.0001.001
Cite this Item
"Experimental notes of the mechanical origine or production of fixtness." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A69611.0001.001. University of Michigan Library Digital Collections. Accessed May 12, 2025.
Pages
descriptionPage 30
A Short
EXCURSION
About some Changes made
OF
TASTS
BY
MATURATION.
IT will not perhaps be thought im∣pertinent,
but rather necessary, to
add a word or two on this occasion
for their sakes, that think the Matu∣ration
of Fruits, and the changes of
Tasts, by which 'tis usually known,
must needs be the effect of the Vege∣table
Soul of the Plant. For, after
the Fruit is gathered, and so, by be∣ing
no longer a part of the Tree,
descriptionPage 31
does, according to the most common
opinion, cease to be a part of the
living Plant, as a Hand or a Foot cut
off is no more reckoned among the
Lims of the man it belonged to;
yet 'tis very possible that some Fruits
may receive maturation, after they
have been severed from the Plants
that bore them. For, not to mention,
that Apples, gathered somewhat be∣fore
the time, by lying in heaps, do
usually obtain a mellowness, which
seems to be a kind or degree of Matu∣ration;
or that Medlars, gathered
whilst they are hard and harsh, do be∣come
afterwards in process of time soft
and better tasted; in which state
though some say they are rotten, yet
others think that supposed rottenness
is the proper Maturity of that kind of
Fruit: Not to mention these, I say,
or the like Instances, 'tis a famous
Assertion of several Writers of the
Indian affairs, that the Fruit they call
Bananas is usually gathered green,
and hung up in bunches or clusters in
the house, where they ripen by de∣grees,
descriptionPage 32
and have an advantageous
change made both of their colour
and of their tast. And this an an∣cient
acquaintance of mine, a literate
and observing person, of whom I in∣quired
about it, assured me, he had
himself lately tried and found to be
true in America. And indeed I see
not, why a convenient degree of
warmth, whether external from the
Sun and fire, or internal from some
degree of fermentation or analo∣gous
intestine Commotion, may not
(whether the Fruit be united to the
Plant or no) put the sporifick Cor∣puscles
into motion, and make them,
by various and insensible transcursi∣ons,
rub against each other, and there∣by
make the little bodies more slen∣der
or thin, and less rigid, or cutting
and harsh, than they were before,
and by various motions bring the
Fruit they compose to a state where∣in
it is more soft in point of consi∣stence,
and abound in Corpuscles less
harsh and more pliable, than they
were before, and more congruous
descriptionPage 33
to the pores of the organ of Tast:
And, in a word, make such a change
in the constitution of the Fruit, as
men are wont to express by the name
of Maturity. And that such Mecha∣nical
changes of Texture may much
alter the Qualities, and among them
the Tast of a Fruit, is obvious in brui∣sed
Cherries and Apples, which in
the bruised parts soon come to look
and tast otherwise than they did be∣fore.
This possibility of this is also
obvious by Wardens, when slowly
roasted in embers with so gentle a
fire, as not to burn off the paper they
are wont to be wrapt in, to be kept
clean from the ashes. And I have
seen, in the bordering Country be∣twixt
France and Savoy, a sort of
Pears, (whose name I now remember
not,) which being kept for some
hours in a moderate heat, in a Vessel
exactly closed, with embers and ashes
above and beneath them, will be re∣duced
to a juicy Substance of a love∣ly
red colour, and very sweet and
lushious to the tast. Many other sorts
descriptionPage 34
of Fruit in other Countries, if they
were handled after the same way, or
otherwise skilfully wrought on by a
moderate heat, would admit as great
alterations in point of tast. Neither
is that sort of Pear to be here omit∣ted,
which by meer Compression,
duly ordered, without external heat,
will in a few minutes be brought to
exchange its former hardness and
harshness for so yielding a Contex∣ture
and pleasant a tast, as I could
not but think very remarkable. And
that even more solid and stubborn
Salts than those of Vegetables, may
have the sharpness and piercingness of
their tasts very much taken off by
the bare internal action of one part
upon the other, without the addition
of any sweetning body, I have been
induced to think by having found,
upon trial, that, by the help of insi∣pid
Water, we may, without any vi∣olence
of Fire, reduce Sea-salt into a
Brine of so mild and peculiar (I had
almost said) pleasant a tast, that one
would scarce suspect what it had
descriptionPage 35
been, or believe that so great a
change of a Mineral body could be
effected by so slight an intestine Com∣motion
as indeed produced it; espe∣cially,
since the alteration of tasts was
not the most considerable that was
produced by this Operation.
As to Liquours that come from
Vegetables, the emerging of new Sa∣pors
upon the intestine Commotion
of the saporifick parts, as Consequen∣ces
of such Commotions, is more
obvious than is commonly considered
in the juice of Grapes, which, from
a sweet and spiritless Liquour, do
by that internal motion we call Fer∣mentation,
acquire that pleasing pun∣gency
and briskness of tast that be∣longs
to Wine, and afterwards dege∣nerates
into that acid and cutting
tast that is proper to Vinegar; and
all this, by a change of Constitution
made by the action of the parts them∣selves
on one another, without the
help of any external additament.
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