(631) 
pleafure in differing Waters, that were ordinarily drunks 
even by confiderahle Persons. And if once you have at- 
tentively mark'd, what change Four or Five drops, for 
inftance, of our discovering Liquor, will make in two or 
three, or feme other fmali determinate number of Spoon- 
fuls, (or rather of half Ounces) of Water ; 'twill not be 
difficult for a heedful Obierver, keeping the fame pro- 
portion between the two Liquors, to make a near Efti- 
mate, whether any Natural Water proposed to him, have 
a greater, an equal, or a ieffer degree of Freflmefs or Salt- 
nefs, than that Water that he has chofen for his Standard • 
and how much, in cafe there be a difference, the proposed 
Liquor is lefs or more free from Saltnefs than the other. 
And that (to add this upon the by) fuch a difference 
m a Liquor of fuch frequent inward Ufe as Water (which 
is the Bafis of Beer, Ale, Mead, and fome other common 
Drinks ) may have confiderable Effe&s upon Humane 
Bodies in reference to Healch, may be probably argued 
from the differing Effects that W 7 aters more or lefs im- 
pregnated with Salt, have upon divers other Bodies. 
Since moil Pump- Waters, for inftance, will not boyl Peas 
and Beef, and fome other Aliments, near fb well as Spring 
Water or Rain Water, which are ufually fofter, and more 
free from the Saltnefs we fpeak of. 'Tis commonly 
known to Barbers and Laundrefies, that the fame Pump- 
Water will not fb well and uniformly, or without little 
Curdlings, diflbhe Wafh-balls and Soap, as Rain-Water, 
and (bme running Waters ufualiy will : Nay, when I 
was curious of tempering Steel, I remember 'twas con- 
feis'd by the skilfulleft Artifts I made ufe of, that fome 
Tools, (as Gravers, feV«) made of that hardeft of Met- 
als, would receive a differing Temper if they were 
quench'd in Pump Water, from that which the like Ex- 
tinction in Spring Water, or River Water, would give 
them. But how to make our Eflimate'of the Frefhnefs 
or Saltnefs of Water come ttearcft the Truth,, is a 
Problem^ 
