-428 ESSAYS AND OBSERVATIONS 



had flood 24 hours on the lime, gave 

 eight grains of a white powder. 



It was obfervable, that thefe three 

 lime-waters retained the tafte of the lime, 

 after being mixed with the fait of tartar, 

 and this equally after precipitation, as be- 

 fore ir. 



Since the earthy powder precipitatec| 

 by thefe different lime waters proceeds 

 wholly, or almoft wholly, from the wa- 

 ters, and not from the fixed alcaline 

 fait. * Thefe experiraenrs fliew, beyond 

 doubt, that double lime-water may con- 

 tain thrice as much lime, .is lime water 

 made by pouring on quicklime, 512 

 times its weight of water. 



IV. I. Monday 24th December, at 

 eight in the evening, I poured upon a 



dram 



* What proves this, is, that the calcr.rious matter pre- 

 cipitated by rai:ar;g fait of tartar v.'ith lime-water, is 

 greater or lefs, in proportion to the fcrength and quantity 

 of the lime-water; but not in proportion to the quantity 

 of the fait. Thus 1 2 grains of fiUt of tartar, mixed with 

 four ounces of ftronf:^ lime-water, yielded as much of 

 this matter, as the fame quantity of this lime-water, 

 mixed with 18 craius of the fait. 



