Micrographia - Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses with Observations and Inquiries Thereupon by Robert Hooke
page 195 of 465 (41%)
page 195 of 465 (41%)
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irregularites appear'd in them; but this irregularity seem'd ascribable to
the thawing and breaking of the flake by the fall, and not at all to the defect of the _plastick_ virtue of Nature, whose curiosity in the formation of most of these kind of regular Figures, such as those of _Salt_, _Minerals_, &c. appears by the help of the _Microscope_, to be very many degrees smaller then the most acute eye is able to perceive without it. And though one of these six-branched Stars appear'd here below much of the shape described in the Third _Figure_ of the Eighth _Scheme_; yet I am very apt to think, that could we have a sight of one of them through a _Microscope_ as they are generated in the Clouds before their Figures are vitiated by external accidents, they would exhibit abundance of curiosity and neatness there also, though never so much magnify'd: For since I have observ'd the Figures of _Salts_ and _Minerals_ to be some of them so exceeding small, that I have scarcely been able to perceive them with the _Microscope_, and yet have they been regular, and since (as far as I have yet examin'd it) there seems to be but one and the same cause that produces both these effects, I think it not irrational to suppose that these pretty figur'd Stars of _Snow_, when at first generated might be also very regular and exact. III. _Several kinds of Figures in _Water_ frozen._ Putting fair Water into a large capacious Vessel of _Glass_, and exposing it to the cold, I observ'd after a little time, several broad, flat, and thin _laminæ_, or plates of _Ice_, crossing the bulk of the water and one another very irregularly, onely most of them seem'd to turn one of their edges towards that side of the Glass which was next it, and seem'd to grow, as 'twere from the inside of the Vessel inwards towards the middle, almost |
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