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almost wholly Invirond wich ehe other Liquor, wcre by lc reduced loto aRound Figure, whlch was ordinarily somewat Elliptica/, huc more Deprefledin ehe Middle than that Figure requires.
18 . Having into a Slcnder Pipe, of that fort that has been deserib’d be-töre, put a little 0/7 of Cloves, and upon this some Oil of T urpentine, that sothe Witter might both above and beneath be touched by Heterogeneous Li-quors, I observed not the 0/7 of Cures to be very manifestly Tumid at thetop, nor the Lower Surface of the OH of Turpentinc (for the Uppcr was Con-cave) to be very Convex : for somewhat Convex it was Downwards. Andfrom this ’twill be easie to conclude, the Figure of the Cylindrical Portion ofWater intercepted between thcle two Oils.
19 . 1 took 0/7 of Annisceds, thaw’d by a gentle warmth, and Common Warter, and having put them together in a conveniently shap’d Glases, they wciesuffered to stand in a cold place till the 0/7 was coagulatcd ; which done, itwas Parted from the Water, and by the Roughnds of its Superficies manifested,as I cxpe&ed, that, when its Parts werc no longer agitatcd and kept eafilyDilplaceable, by the Subtile permeating matter, or whatever other Agent orCause it were to which it owed its Fluidity, then the Contiguous Water grewunable to Inflect, or otherwise place them aster the manner requisite to con-stitute a Smootb Smfr.cc. And what happen’d to that part of the 0/7/ Surfacethat was touched by the Winter, happen’d also to that which was contiguousto the Air ; (ävc that the Afpcrity of the last named Surface was differing fromthe other, which whether it were an accidental or constant Piuenomenon farthertiial must determine. But 1 have often observed, That the Upper Surfaceof 0/7.of Annisceds, when this Liquor comes to be Coagulatcd by the ColdAir, was far enough from being Smootb, being variousty Alperated by manyFlaky Particles, some of which lay with their broad, and other wich theiredged Parts upwards.
ao. An Inequality and Ruggednese of Superficies I have also observed inWater, when, having covered it with Chymical Oll of Juniper, and exposed itin very cold Weather, though the 0/7 continucd Fluid, yet the Water beingFro 7 .cn bad no longer a Smootb Superficies, as whilst in its Liquid state ’twascontiguous to the Oil. And the like Inequality, and rathet a greater, we ob-served in the Surface of Water Frozen, which had Chymical Oil of TiuftntineSwimming over it, yet a no lese, if not a much greater, Roughnese may beoftentimes observed in the Surfaces of divers Liquors that abound with Water,when, those Liquors being Frozen, their Surfaces have an immediate Contaclwith the Air. I (hall here add, that having purposely caused a Strong andBlood-red Decoction of the Soot of Wood to be exposed in a large Glase ina very Cold Night, I was more pleased then furprized, to find in the Morn-ing a Cake of lee, that was curioufly Figur’d, being füll of large Fiakesfhap’d almost like the broad Blades of Daggers, but ncatly Fringed at theEdges. But that which I chiefly mention thesc Figures for, is, that theyleern to be as it were Imbost, being both to the Eye and the Touch Railedabove the Horizontal Plain or Level of the other Ice.
at. I