Secondly, that it be not too long exposed, so as that the whole bulk be
frozen, for oftentimes, in such cases, by reason of the swelling the of
_Ice_, or from some other cause, the curious branched Figures disappear.
Thirdly, an artificial freezing with _Snow_ and _Salt_, apply'd to the
outside of the containing Vessel, succeeds not well, unless there be a very
little quantity in the Vessel.
Fourthly, If you take any cleer and smooth Glass, and wetting all the
inside of it with _Urine_, you expose it to a very sharp freezing, you will
find it cover'd with a very regular and curious Figure.
II.
_Observables in figur'd _Snow_._
Exposing a piece of black Cloth, or a black Hatt to the falling _Snow_, I
have often with great pleasure, observ'd such an infinite variety of
curiously figur'd _Snow_, that it would be as impossible to draw the Figure
and shape of every one of them, as to imitate exactly the curious and
Geometrical _Mechanisme_ of Nature in any one. Some coorse draughts, such
as the coldness of the weather, and the ill provisions, I had by me for
such a purpose, would permit me to make, I have here added in the Second
_Figure_ of the Eighth _Scheme_.[12]
In all which I observ'd, that if they were of any regular Figures, they
were always branched out with six principal branches, all of equal length,
shape and make, from the center, being each of them inclin'd to either of
the next branches on either side of it, by an angle of sixty degrees.
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