Micrographia: Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses with Observations and Inquiries ThereuponHooke, Robert
History
Micrographia: Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses with Observations and Inquiries Thereupon
Hooke, Robert
Magnifying glasses -- Early works to 1800; Microscopy -- Early works to 1800; Natural history -- Pre-Linnean works
Now though this point be commonly accounted the sharpest (whence when we
would express the sharpness of a point the most _superlatively_, we say, As
sharp as a Needle) yet the _Microscope_ can afford us hundreds of Instances
of Points many thousand times sharper: such as those of the _hairs_, and
_bristles_, and _claws_ of multitudes of _Insects_; the _thorns_, or
_crooks_, or _hairs_ of _leaves_, and other small vegetables; nay, the ends
of the _stiriæ_ or small _parallelipipeds_ of _Amianthus_, and _alumen
plumosum_; of many of which, though the Points are so sharp as not to be
visible, though view’d with a _Microscope_ (which magnifies the Object, in
bulk, above a million of times) yet I doubt not, but were we able
_practically_ to make _Microscopes_ according to the _theory_ of them, we
might find hills, and dales, and pores, and a sufficient bredth, or
expansion, to give all those parts elbow-room, even in the blunt top of the
very Point of any of these so very sharp bodies. For certainly the
_quantity_ or extension of any body may be _Divisible in infinitum_, though
perhaps not the _matter_.
But to proceed: The Image we have here exhibited in the first
Figure[1], was the top of a small and very sharp Needle, whose point
_aa_ nevertheless appear’d through the _Microscope_ above a quarter
of an inch broad, not round nor flat, but _irregular_ and _uneven_;
so that it seem’d to have been big enough to have afforded a hundred
armed Mites room enough to be rang’d by each other without endangering
the breaking one anothers necks, by being thrust off on either side.
The surface of which, though appearing to the naked eye very smooth,
could not nevertheless hide a multitude of holes and scratches and
ruggednesses from being discover’d by the _Microscope_ to invest it,
several of which inequalities (as A, B, C, seem’d _holes_ made by some
small specks of _Rust_; and D some _adventitious body_, that stuck very
close to it) were _casual_. All the rest that roughen the surface,
were onely so many marks of the rudeness and bungling of _Art_. So
unaccurate is it, in all its productions, even in those which seem most
neat, that if examin’d with an organ more acute then that by which
they were made, the more we see of their _shape_, the less appearance
will there be of their _beauty_: whereas in the works of _Nature_,
the deepest Discoveries shew us the greatest Excellencies. An evident
Argument, that he that was the Author of all these things, was no other
then _Omnipotent_; being able to include as great a variety of parts
and contrivances in the yet smallest Discernable Point, as in those
vaster bodies (which comparatively are called also Points) such as the
_Earth_, _Sun_, or _Planets_. Nor need it seem strange that the Earth
it self may be by an _Analogie_ call’d a Physical Point: For as its
body, though now so near us as to fill our eys and fancies with a sense
of the vastness of it, may by a little Distance, and some convenient
Public-domain text, read in full here on John Shaqi.
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