DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.68888#0079
Micrographia.
even higher then the Air was able by its bare pressure toraiseit: For,
Congruity is a principle that not only unites and holds a body joyned to
it, but, which is more, attrasts and draws a body that is Very near it, and
holds it above its usoal height*
And this is obvious even in a drop of water suspended under any Si-
milar or Congruous body : For,besides the ambient pressure that helps to
keep it sustein’d, there is the Congruity of the bodies that are contigu-
ous. This is yet more evident in Tenacious and Glutinous bodies 5 soch
as Gummous Liquors, Syrups, Pitch, and Rosin melted, &c. Tar, Tur-
pentine, Balsom, Bird-lime, &c. for there it is evident, that the Parts
of the tenacious body, as I may so call it, do ssick and adhere so close-
]y together, that though drawn out into long and very (lender Cylin-
ders, yet they will not easily relinquish one another 5 and this, though
the bodies be aliquatenus ssuid, and in motion by one another 5 which,
to such as consider a ssuid body only as its parts are in a confused irregu-
larmotion, without taking in alio the congruity of the parts one among
another, and incongruity to some other bodies, does appear not alittle
strange. So that besides the incongruity of the ambient ssuid to it, we
are to consider also the congruity of the parts of the contein’d ssuid one
with another.
And this Congruity ("that I may here a little further explain it J is both
a Tenaceous and an Attractive power 5 for the Congruity, in the Vi-
brative motions,may be the cause of all kind of attrastion, not only Ele-
ctrical, but Magnetical also, and therefore it may be also of Tenacity
and Glutinousness. For, from a perfeCt congruity of the motions of two
distant bodies, the intermediate ssuid particles are soparated and dro-
ven away from between them, and thereby those congruous bodies are,
by the incompassing mediums, compeli’d and forced neerer together 5
wherefore that attraCriveness must needs be stronger, when, by an im-
mediate contaCt, they are forc’d to be exaCtly the lame: As I (hew more
at large in my Theory of the Magnet. And this hints to me the reason os
the solpension of the Mercury many inches, nay many seet, above the ussi-
al station of 30 inches. For the parts of Quickfflver., being so very
similar and congruous to each other, if once united, will not easily sofier
a divulsion : And the parts of water, that were any wayes heterogeneous^
being by exantlation or rarefaCtion exhausted, the remaining parts being
also very similar, will not easily part neither. And the parts of the Glals
being solid, are more difficultly disjoyn’d 5 and the water, being some-
what similar to both, is, as it were, a medium to unite both the Glass and
the Mercury together. So that all three being united, and not very diss
similar, by means of this contast, if care be taken that the Tube in e-
reCting be not (hogged, the Quicksilver will remain suspendetk notwith-
standing its contrary indeavour of Gravity, a great height above its or-
dinary Station 5 but if this immediate ContaCt be removed, either by a
meer feparation of them one from another by the force of a (hog, where-
by the other becomes imbodied between them, and licks up from the
surface some agil parts, and so hurling them makes them air 5 or elfe
even higher then the Air was able by its bare pressure toraiseit: For,
Congruity is a principle that not only unites and holds a body joyned to
it, but, which is more, attrasts and draws a body that is Very near it, and
holds it above its usoal height*
And this is obvious even in a drop of water suspended under any Si-
milar or Congruous body : For,besides the ambient pressure that helps to
keep it sustein’d, there is the Congruity of the bodies that are contigu-
ous. This is yet more evident in Tenacious and Glutinous bodies 5 soch
as Gummous Liquors, Syrups, Pitch, and Rosin melted, &c. Tar, Tur-
pentine, Balsom, Bird-lime, &c. for there it is evident, that the Parts
of the tenacious body, as I may so call it, do ssick and adhere so close-
]y together, that though drawn out into long and very (lender Cylin-
ders, yet they will not easily relinquish one another 5 and this, though
the bodies be aliquatenus ssuid, and in motion by one another 5 which,
to such as consider a ssuid body only as its parts are in a confused irregu-
larmotion, without taking in alio the congruity of the parts one among
another, and incongruity to some other bodies, does appear not alittle
strange. So that besides the incongruity of the ambient ssuid to it, we
are to consider also the congruity of the parts of the contein’d ssuid one
with another.
And this Congruity ("that I may here a little further explain it J is both
a Tenaceous and an Attractive power 5 for the Congruity, in the Vi-
brative motions,may be the cause of all kind of attrastion, not only Ele-
ctrical, but Magnetical also, and therefore it may be also of Tenacity
and Glutinousness. For, from a perfeCt congruity of the motions of two
distant bodies, the intermediate ssuid particles are soparated and dro-
ven away from between them, and thereby those congruous bodies are,
by the incompassing mediums, compeli’d and forced neerer together 5
wherefore that attraCriveness must needs be stronger, when, by an im-
mediate contaCt, they are forc’d to be exaCtly the lame: As I (hew more
at large in my Theory of the Magnet. And this hints to me the reason os
the solpension of the Mercury many inches, nay many seet, above the ussi-
al station of 30 inches. For the parts of Quickfflver., being so very
similar and congruous to each other, if once united, will not easily sofier
a divulsion : And the parts of water, that were any wayes heterogeneous^
being by exantlation or rarefaCtion exhausted, the remaining parts being
also very similar, will not easily part neither. And the parts of the Glals
being solid, are more difficultly disjoyn’d 5 and the water, being some-
what similar to both, is, as it were, a medium to unite both the Glass and
the Mercury together. So that all three being united, and not very diss
similar, by means of this contast, if care be taken that the Tube in e-
reCting be not (hogged, the Quicksilver will remain suspendetk notwith-
standing its contrary indeavour of Gravity, a great height above its or-
dinary Station 5 but if this immediate ContaCt be removed, either by a
meer feparation of them one from another by the force of a (hog, where-
by the other becomes imbodied between them, and licks up from the
surface some agil parts, and so hurling them makes them air 5 or elfe