\ RN 
360 Lixivial Salts of Plants. Lea. II. 
Scammony yields Two Scruples of Cap. Mort. of which, 
Scruple is Salt. 
Gutta Gamba yields but halfa Scru: 
or five Grains are Salt. 
So that confidering the Dofe of any Cathartich Gumm, the quanti- 
ty of the Fixed Alkaly, is extream fmall with refpe& to the Volatile ) 
parts : In which, therefore, its Crthartick Power doth chiefly refide. 
Yet none of the Cathartick Gumms are without fome portion, more 
orleß, of a Fixed Alkaly 3 though fome of the reft are, Which feem- 
eth to prove, That the Fixed it £e1f, hath (ome Intereft in the bufineß 
of Purgation: as by being a Clog to the Volatile, and fo preventing its 
being deleterious; or fome other way. But the manner of their Ope- 
ration will better be underftood, when the Volatile Parts have like- El 
wife been examined. 
+t may alfo be of good import, to know, what different quanti- 
ties of Salt, are afforded by the Tartars of all forts of Wines Where- 
by, partly, as well as by the quantity of the Tatar, we may be ena- 
Bleibe peto judge of the Nature of Wines. > us 
about half a 
ple of Cap. Mort. of which four 
