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 like so many blades of _Fern_. Having taken several of these plates out of water on the blade of a Knife, I observ’d them figur’d much after the manner of _Herring bones_, or _Fern blades_, that is, there was one bigger stem in the middle like the back-bone, and out of it, on either side, were a multitude of small _stiriæ_, or _icicles_, like the smaller bones, or the smaller branches in _Fern_, each of these branches on the one side, were parallel to all the rest on the same side, and all of them seem’d to make an angle with the stem, towards the top, of sixty degrees, and towards the bottom or root of this stem, of 120. See the fourth _Figure_ of the 8. _Plate_. I observ’d likewise several very pretty Varieties of Figures in Water, frozen on the top of a broad flat Marble-stone, expos’d to the cold with a little Water on it, some like feathers, some of other shapes, many of them were very much of the shape exprest in the fifth Figure of the 8. _Scheme_, which is extremely differing from any of the other Figures. I observ’d likewise, that the shootings of _Ice_ on the top of Water, beginning to freeze, were in streight _prismatical_ bodies much like those of _roch-peter_, that they crost each other usually without any kind of order or rule, that they were always a little higher then the surface of the Water that lay between them; that by degrees those _interjacent_ spaces would be fill’d with _Ice_ also, which usually would be as high as the surface of the rest. In flakes of _Ice_ that had been frozen on the top of Water to any considerable thickness, I observ’d that both the upper and the under sides of it were curiously quill’d, furrow’d, or grain’d, as it were, which when the Sun shone on the Plate, was exceeding easily to be perceiv’d to be much after the shape of the lines in the 6. _Figure_ of the 8. _Scheme_, that is, they consisted of several streight ends of parallel Plates, which were of divers lengths and angles to one another without any certain order.