JSrom Water and other Liquids, &c. 569 
due proportion; one cause of this may be the 
evaporability of spirits, which in operating on 
small quantities, quickly dissipates part of their 
strength, 
Experiments on Liquid Ammonia. 
Liquid ammonia or volatile alkali, the specific 
gravity of which was .9474, boiled near 140°; 
in the barometer a small quantity depressed the 
mercury 4. 3 inches in the temperature of 60°. 
In higher temperatures it did not produce a 
proportional depression ; because the most vola- » 
tile part of the compound, expanding in the va- 
cuum of the barometer, leaves the rest more 
watery, and consequently its vapour must be 
weaker; especially when the portion used is con- 
fined toa drop or two. 
Muriate of Lime. 
Put a portion of liquid muriate of lime over 
the column of mercury in a barometer. The 
boiling point of the muriate was found by ex- 
periment to be 230°, At 55° the depression 
was ,22 of an inch: 
at 65°—.30 
a, A 
ore Oey 7. QD 
all which nearly agree with the forces of aqueous 
vapour 18° below the respective temperatures. 
