
Book IV. 

A 
DISCOURSE 
Read before the 
ROYALSOCIETY 
Decemb. 10. 1674. 
Concerning the 
NATURE, CAUSES, and POWER 
MIX TURE. 

AV ING the honour to perform the Task of 
ij this day ; 1 fhall endeavour to conform to the 
Phylofophy, which this Society doth profes 5 
which is, Reafoning grounded upon Experiment, 
and the Contmon Notions of Senfé. The former 
being, without the latter, too fubtle and intan- 
gible ; the latter without the former, too grofs 
4, and unmanageable: but both together, bearing 
a true analogy to our felves 3 who are neither 
Angels, nor meer Animals, but Men. ? ; 
The Subject I have chofen to {peak of, is Mixture. .Whereof, that 
our Difcourfe may be the more confiftent, and the better imteligzble 5 
all I have to fay, fhall be ranged into this Method 5 az. d 
1. Firft, I fhall give a brief account of the received Doéfrixe of 
Mixture. 
2. Next, Jay down fome Propofitions of the Principles whereof all 
Mixed Bodies confift. : ve 
3. Then, open the true Nature of Mixtures or fay, What itis, — 
4. And then enumerate the Canes of Mixture; or fay, How it is 
made. 
5. Laftly, I thall thew the Power of Mixture 3 or, What it can do. 

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