Nor are the joints regular, and of an _equitriagonal Figure_, but, for the
most part, the three _fibres_ so meet, that they compose three angles very
differing all of them from one another.
The meshes likewise, and holes of this reticulated body, are not less
various and irregular: some _bilateral_, others _trilateral_, and
_quadrilateral_ Figures; nay, I have observ'd some meshes to have 5, 6, 7,
8, or 9. sides, and some to have onely one, so exceeding various is the
_Lusus Naturae_ in this body.
As to the outward appearance of this Vegetative body, they are so usuall
everywhere, that I need not describe them, consisting of a soft and porous
substance, representing a Lock, sometimes a fleece of Wooll; but it has
besides these small _microscopical_ pores which lie between the _fibres_, a
multitude of round pores or holes, which, from the top of it, pierce into
the body, and sometimes go quite through to the bottom.
I have observ'd many of these Sponges, to have included likewise in the
midst of their fibrous contextures, pretty large friable stones, which must
either have been inclos'd whil'st this Vegetable was in formation, or
generated in those places after it was perfectly shap'd. The later of which
seems the more improbable, because I did not find that any of these stony
substances were perforated with the _fibres_ of the Sponge.
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