DOI Page / Citation link:
https://doi.org/10.11588/diglit.68888#0056
IO MlCROGRAP HIA.
ffianifest to discern the impressions upon thefe wales, left by thofe that
were prest upon them,which lying not exactly parallel with them,but a lit-
tle athwart them, as is denoted by the lines of/; o o o*gh. gh*gh* between
which the other wales did lie parallestthey are so variously,and irregular-
ly creas’d that being put into that shape when wet,and kept so till they be
drie, they so set each others threads, that the Moldings remain almost as
long as the Stuff lasts.
Hence it may appear to any one that attentively considers the Figure,
why the parts of the wale a* a* a* a* a* a* should appear bright $ and why
the parts b* b* b* b* b* b* should appear shadowed, or dark; why feme, as
d*d*d*d*d*d* should appear partly light,and partly dark: the varieties of
which ressexions and shadows are the only cause of the appearance of wa-
tering in Silks, or any other kind of Stuffs.
From the variety of ressexion, may also be deduc’d the cause why a
small breez or gale of wind ruffling the surface of a smooth water, makes
it appear black 5 as also,on the other side, why the smoothing or burnish-
ing the sorface of whitened Silver makes it look black 5 and multitudes of
other phenomena might hereby be solv’d, which are too many to be here
insistedon.
Observ. Vl. Ofsmall Glafs Canes.
Stltm. 4. 'pat i might be satisfi’d, whether it were not possible to make an
j Artisicial pore asfmall as any Natural I had yet found, I made se-
vejal attemps with small glafs pipes.* melted in the ssame of a Lamp, and
then very fitddenly drawn out into a great length. And, by that means*
without much difficulty, I was able to draw some almost as small as a
Cobweb* which yet, with the Microfiope* I could plainly perceive to be
persorated* both by looking on the ends of it, and by looking on it againsi
the light 5 which was much the eafier way to determine whether it were
solid or perforated 5 for, taking a small pipe of glass, and closing one
end of it, then filling it halssull of water, and holding it againfi the light*
I could, by this means, very easily find what was the dissering ajpetf of a
folid and a persorated piece of glass 5 and so easily distinguish, without
feeing either end, whether any Cylinder of glass I look ’d on, were a. folid
ssicks* or a hollow cane. And by this means,! could also presently judge of
any small silament of glass, whether it were hollow or not* which would
have been exceeding tedious to examine by looking on the end. And
many siich like ways I was fain to make uie of, in the examining of di-
vers other particulars related in this Book, which would have been no
easie task to have determined meerly by the more common way of look-
ing on, or viewing the Object. For, if we consider first, the very saint
light wherewith the objest is enlightened, whence many particles ap-
pear opacous* which when more enlightned, appear very tranjparent* so
that I was fain to determine its transparency by one glass, and its texture
by another Next, the unmanageablenefs of most Objetts* by reason
0
ffianifest to discern the impressions upon thefe wales, left by thofe that
were prest upon them,which lying not exactly parallel with them,but a lit-
tle athwart them, as is denoted by the lines of/; o o o*gh. gh*gh* between
which the other wales did lie parallestthey are so variously,and irregular-
ly creas’d that being put into that shape when wet,and kept so till they be
drie, they so set each others threads, that the Moldings remain almost as
long as the Stuff lasts.
Hence it may appear to any one that attentively considers the Figure,
why the parts of the wale a* a* a* a* a* a* should appear bright $ and why
the parts b* b* b* b* b* b* should appear shadowed, or dark; why feme, as
d*d*d*d*d*d* should appear partly light,and partly dark: the varieties of
which ressexions and shadows are the only cause of the appearance of wa-
tering in Silks, or any other kind of Stuffs.
From the variety of ressexion, may also be deduc’d the cause why a
small breez or gale of wind ruffling the surface of a smooth water, makes
it appear black 5 as also,on the other side, why the smoothing or burnish-
ing the sorface of whitened Silver makes it look black 5 and multitudes of
other phenomena might hereby be solv’d, which are too many to be here
insistedon.
Observ. Vl. Ofsmall Glafs Canes.
Stltm. 4. 'pat i might be satisfi’d, whether it were not possible to make an
j Artisicial pore asfmall as any Natural I had yet found, I made se-
vejal attemps with small glafs pipes.* melted in the ssame of a Lamp, and
then very fitddenly drawn out into a great length. And, by that means*
without much difficulty, I was able to draw some almost as small as a
Cobweb* which yet, with the Microfiope* I could plainly perceive to be
persorated* both by looking on the ends of it, and by looking on it againsi
the light 5 which was much the eafier way to determine whether it were
solid or perforated 5 for, taking a small pipe of glass, and closing one
end of it, then filling it halssull of water, and holding it againfi the light*
I could, by this means, very easily find what was the dissering ajpetf of a
folid and a persorated piece of glass 5 and so easily distinguish, without
feeing either end, whether any Cylinder of glass I look ’d on, were a. folid
ssicks* or a hollow cane. And by this means,! could also presently judge of
any small silament of glass, whether it were hollow or not* which would
have been exceeding tedious to examine by looking on the end. And
many siich like ways I was fain to make uie of, in the examining of di-
vers other particulars related in this Book, which would have been no
easie task to have determined meerly by the more common way of look-
ing on, or viewing the Object. For, if we consider first, the very saint
light wherewith the objest is enlightened, whence many particles ap-
pear opacous* which when more enlightned, appear very tranjparent* so
that I was fain to determine its transparency by one glass, and its texture
by another Next, the unmanageablenefs of most Objetts* by reason
0