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Show Lea.VI. Effential and Mariite Lea. IV. “Rg Pe Black Thorn, Common Wormwood, Afh, and Tartar. All whichdiffolvedfeverally in fair water, I expofed in a Chamber window, and G GiAcre not in Winter, as before, but in the heat of Summer, /c. on the 19 of Fuly, to evaporate of themfelves, 4. §. The Effe& was, That the third day after their being ex- ak Wherein is fhewed, That the faid ESSENTIAL and MARINESaltsofPlants are both of different Sorts. 5. §._ A VING madethe Experiment, that both an Effential and Marine Salt maybe produced out of the Lixival Salt of a Plant. I thought it probable, that neither the one northe other, was always the fame, but that as they had their general properties which made them to be of {1 two general |kinds 5 fo they might have fome } {pecial property, for the diftinguifhing of each kind into feveral Sorts. And withall, that in a warmer feafon, than before taken, the Tryal hereof might be Gel finifhed ina fhorter time. 2. §. 7 For the making of which, I conceived it requifiteto remove an Opinion whichfeemed to lye in my way; /¢. That there is little or no difference between the feveral Lixivial Salts of Plants, as fome Learned men have thought. Buteither thereis a difference, or not: if not,it fhould be proved : and if there be,it fhould then bejuftly ftated, what that difference is. For the doing of which, I chofe this Method, I took an equal quantity of the whiteft and pureft Salts of divers Plants, all made byan equal degree ofCalcination ; and diffolved them all fe- verally in an equal quantity of water. And pouring likewife an equal quantity, as about 10 or 12 drops ofeach into a fpoon, I tafted them feverally. Whereby it was very evident, that they werenotall of one Taft, but of verydifferent ones, both as to ftrength and kind: and therefore different in Nature alfo. The Salts I made tryal of were thofe of Sorrel, Axife, Wormwood, Mallow, Afh, Tartar and others: and upon halfa Drachm of each I poured 3ij$ of water. The Solutions are here prefent to be tafted. By which the differences will eafily be obferved, and particularly that the Salt of Wormwood or Scur- vygrafs, is almoft as {trong again asthe Salt of Avifé, or Sorrel: and that Salt of Afh is above twice as ftrong, and that of Tartar above thrice as ftrong, asthat of Sorrel, andalmoft thrice as {trong asthat of Wormwood or Scurvygrafs. Sothat he whofhall give half a Scruple, fuppofe of Salt of Tartar; inftead of half a Scruple of Salt of Wormmood, or other like Sat; he may as well give a Scruple of Rofiz of Jalap, for a Scruple of the powder, or almoft three] Drachms of Rha- barb, or other like Parge, inftead of one. of other Lixizial Salts in their degrees, 3. §. poled, the Efféntial cryftals began to fhoot in three of the Solutions, Je. in that of Rofemary, of Garden Scuruygrafs, and of Black Thorn. On the fouth day, in that of Wormwood, On the fifth day, in that of Afb. Yo that of Tartar, notat all. Andthelike is to be faid Having obferved thus much, I proceeded to repeat the for- mer Experiment, with fome ofthe aforefaid, andfome other Vegetable Salts, the beft calcin’d, and the pureft, that could purpofe, being thefe Six salts, fc. of Rofemary, Gar > for this Thele Effential Cryftals began,in all, to {hoot at the top, and thento fallto the bottome 5 as in the Experiment before. But as there was very little of the white Sedement before mentioned, that preceded 5 So no Scum or Cremorat all. Which although a more perfect Calcinatiow, it feems, did here almoft prevent ; yet did not in the leaft deftroy the aforefaid E/fential Salt, but rather make wayfor its more fpeedy and copious Production: exhibiting likewife a diftin& Species in feveral of the Solutions. 6. §. For firlt, the Cryffals: of Rofemary (the largeft of them ) were aboutthe bignefs ofa Kice-Corm, In Figure almoft likea T7p-Cat, which Boysplay with, fplit down the midle. Each Tip being cut into 5 Tab. 83. 5 fides all ending ina poynt: the midle part divided into 7, all drawn byparallel Lizes 5 the topmoft with the lowermoft but one, on each fide, beeing three exact Squares. 7. §.. The Cryffals of Black Thorn are moft of them poynted with jult fix fides of Equal Meafure: very like to the {hooting of true Cryffalit {elf. From the topmoft of whichfix Sides, a Live being drawn Tab. 83. out, runs parallel toa broad Ba/é, whereon each Cry/fal ftands, So that they are in fome fort of a Khomboid Figure. 8. §. The Cryftals of Scurvygrafs have alfoa veryelegant and regular Figure, which is in a manner compounded of the two former now defcribed. But they are nothing near fo bigg, the largeft of them, being no biger than a Gratz of that which wecall Pearl Barley. 9. §. The Cryftals of Wormwood have alfo very many of them a regular Figure 5 but quite different from that of the Crysfals before mentioned 5 each Cry/tal being a little Cylinder, faving that it is con- ftantly fomewhat {maller at one end,than the other:as it were one half of a Rowling-pin. And notevenlyCircular, but cut out by Six Sides of equal Meafure: almoft asin the Cryftal of Nitre. So that contrary to whatis feen in the forementioned Cryftals, the ends of thefe of Wormwood are not poynted, but flat; and cut at Right Angles with the Sides. 10, §. The Cryffals of Aj, though bytheir properties they appear likewife to be Effential yet are nothing near fo regularly figur’d, as all the forementioned, 11. §. The Colouralfo of the faid Cryffals is fomewhat different : Thofe of Afb being of a brows tranfparency, almoft like thofe of Firze. Thofe of Wormwood being alfo brownifh, but paler. Thole of Rofe- mary and Scurvygrafs having fome little Tivdure, yet very clear. But thofe of Black Thorn without the leaft Tivure, andas clear as Cryitat it felf Tab, 83. |