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The Caufes of Mixture. Led. L 
5- §. Digeftion. For which there isthe fame reafon, as for Mixture, 
by Solution. For, Firff, All heat doth attenuate, that is, ftill farther 
feparate the parts of a Body ; and fo render them more wingleable with 
the parts of another. And therefore, Secondly, Doth alfo add more 
Motioz to them, in order to their Mixture. 
6. §. Agitation. Which] am induced tobelieve a great and effectual 
means of Mixture, upon divers Confiderations. As, Firf?, That the 
making of Blood in the Bodies of Animals, and the mixing of the Chyle 
therewith, is verymuch promoted by the fame means 3 fe. by the Agi- 
tation of the parts of the Blood and Chyle, in their continual Circulation. 
Again, from the waking of Butter out of Milk, by the {ame means : 
whereby alone is made a féparation of the oleous parts from the Whey , 
and Conjunétion of the Oleows together. Moreover, From the great 
Effects of Digeftion, well known to all that are converfant in Chymical 
Preparations. Which Digeftion it felf, isbuta kind of infenfible agita- 
tion of the parts of digefted Bodies. “Tis alfo a known Experiment , 
That the readie{t way to diflolve Sugar in Wine or other Liquor 5 is to 
give the Vefel a hafly turn, together with a Jiart kvock, againft any 
hard and fteady Body : whereby all the parts of the Sugar and Liquor, 
are put into a vehement Agitation, and fo the Sugar immediately diffol- 
ved, and mixed with the Liquor. And I remember, that having (with 
intent, tomake Mr, Matthews’s Pill ) put fome Oyl of Turpentine and 
Salt of Tartar together in a Bottle, and fent it up hither out of the 
Country s I found, that the continual Agitation upon the Road, forthree 
or four days, haddone more towards their Mixture; than a far grea- 
ter time of Dige/fion alone had done before. And it is certain, That 
avehement Agitation, efpecially, if continu’d, or joyned with Dige- 
tions, willaccelerate the Mixture of fome Bodies, ten timesmore, than 
any bare Digeftion alone 5 as may be proved by many Experiments. I 
will inftance in this one. Let fomeOyl of Turpentine and good Spirit 
of Nitre be ftop’d up together in a Bottle, and the Bottle held to the 
Fire, till the Liguors bea little heated, and begin to bubble. Then 
having removed it, and the Bubbles by degrees increafing more and 
mores thetwo Liquors will of themfelves, at laft fall into fo impe- 
tuous an Ebulltion,as to make a kind of Explofions fending forth a fisoak 
for the fpace of almoft#wo yards high. Whereupon, the parts of both 
the Liquors, being violently agitated, they are, in a great portion, incor- 
porated into a thick Balam ina moment: and that without any intenfe 
heat, as may be felt by the Bottle. And thus much for the Canfes of 
Mixture. 

CHAP, 

