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220 ESSAYS anp OBSERVATIONS” 
pounds of boiling water, and then mixed 
in a glafs veflel with eighteen ounces of 
a pure fixed alkaline falt, which had been 
firtt diffolved in two pounds anda halt of 
water, This mixture was fhaken fre- 
quently for two hours, when the action of 
the lime upon the alkali was fuppofed to 
be over, and nothing remained but to fe- 
parate them again from one another. I 
therefore added 12 pounds of water, ftir- 
red up the lime, and, after allowing it to 
fettle again, poured off as much of the 
clear ley as poflible. 
THE lime and alkali were mixed toge- 
ther under the form of a very thick milky 
liquor or fluid pafte; becaufe they are 
thus kept in perpetual contact and equal 
mixture until they have acted fufficiently 
upon one another: Whereas, in the com- 
mon way of ufing a larger quantity of 
water, the lime lies for the moft part at 
bottom, and,-tho’ ftirred up ever fo often, 
cannot exert its influence fo fully upon the 
alkali, which is uniformly diffufed thro’ 
every part of the liquor. 
THE 
