( 6-9 )

was fiat, look’d almost, for ’twas not so Specular , like that of Quick, Silver ,.and when I kept i't till Night, and considered it by the Light of a Candle,the bright Figure of the Flame was strongly Rellected almost as from a ClofeSpecular Body ; which tempted me to sofpect, that there might bc somethingeile thau the bare smoothnels of the Sursacc of the Alcali^at Liquor to produceso brisk a RrflcBion ; and the rathet, because I did not oblerve, that the re-mains of the fame Tingcd Alcali , which I kept in another Glals, nor a Por-tion of the lame Oil, which I had also by me in a seperate Vial, did eichet ofthem afford so Vivid a Reflexion from its Sursacc; though I did the lels wun-der at this, because of the gveat Dilpofition to RcflcB Light ; which 1 hadformerly the Curiosity to oblerve in the forementioncd OH, when 1 joyned itwich otlicr Liquors. I (hall add, that looking on this Liquor, as a Bodywhich, though it have aU the neeefiary Qualities of an OH, does in regard otits Origin, and some Pröperties I have found in it, difter from comnion Cso-mical Öils ; I was invitcd the more to oblerve its Phanomcna in reference toRrflcBion, and I found among otlier things, (not pertinent to this place,)

First, That the Conhning Plain often mentioned between the Tinged Alcaliand this Liquor, did not appear Red it lelf, nor communicate that Colour tothe Image of the Flame of a Candle Reflected from it. Secondiy, That whenI warily Ihook the Vial, which contained the two Liquors, the uppermostwould be reduced into a leerning Froth, consisting of a great numberofImperfcctly Globular Bodies, which aster a while would make a kind of aRüde Phyfical Plain ; which, though neither very Horizontal, nor senfiblySmooth, would, at its upper Superficies, send back the Incident Light withmore Briskneß than one would expect ; and when the sceming Froth con-iisted ot linaller Particles, these, when they were of a ccrtain Size, and con-veniently Placed, in reference to the Flame of a Candle and the Eye, would(as more than one Trial informed me) Reflect the Incident Light so manyways, and so visibly, that they leemed, for multitude and splendor, like JittleSparkling Corpuseies of Polistted silver , or almost like those Gülfering ones,that appear when a clean Plate of Copper is first Immcrsed into a much allayedSolution of good Silver, made in Aqua Fortis. Thirdly, That though pureSpirit of Winc be so thin a Liquor, and our Oil is nevertheleß so Light asto Swim upon it, yet I found the Confining Surface very strongly Reflexive.

I have also found, that some other Essential Oils, (as Chymists call tholetliat are Distilled with Water in Limbccks) and particularly an UnsophifticatedOil of Limons, did with our Tinged Alcali astord mostof the lame Phaenome-na ; but not 1b Brisk a RefieBivn I sey most, chiefly because with Spirit ofWinc these Subtile Oih, as I formerly noted, will readily be confoundcd:though our Anomalous Oil be unföciable with it.

14 . In Cold Weathcr we took Esential Oils of Annisecds, whose Property it"' I?z ' ?’ 7f 'is to Coagulate in such Weather, and having in a gentle warmth brouglit itto be Fluid, we poured it into a Slender Viol more than half filled with Com-nion Water, that had been also a little warmed, that the Oil might not be toohastily reduced to its former State. This Oil being Lighter than 1b mudiWater, and being poured on in a convenient Quantity, had its Upper Surface

K k k k z some-