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Hooke, Robert, 1635-1703

"Micrographia Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses with Observations and Inquiries Thereupon"


17 But there is a _Vegetable_ which does exceedingly imitate these
branches, and that is, _Fearn_, where the main stem may be observ'd to
shoot out branches, and the stems of each of these _lateral_ branches, to
send forth _collateral_, and those _subcollateral_ and those
_laterosubcollateral,_ &c. and all those much after the same order with the
branchings, divisions, and subdivisions in the branchings of these Figures
in frozen _Urine_; so that if the Figures of both be well consider'd, one
would ghess that there were not much greater need of a _seminal principle_
for the production of _Fearn_, then for the production of the branches of
_Urine_, or the _Stella martis_, there seeming to be as much form and
beauty in the one as in the other.
And indeed, this Plant of _Fearn_, if all particulars be well consider'd,
will seem of as simple, and uncompounded a form as any _Vegetable_, next to
_Mould_ or _Mushromes_, and would next after the invention of the forms of
those, deserve to be enquir'd into; for notwithstanding several have
affirm'd it to have seed, and to be propagated thereby; yet, though I have
made very diligent enquiry after that particular, I cannot find that there
is any part of it that can be imagin'd to be more seminal then another: But
this onely here by the by:
For the freezing Figures in _Urine_, I found it requisite,
First, that the Superficies be not disturbed with any wind, or other
commotion of the air, or the like.


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