C l°9 J 
14. Sal Ammoniac . . . . i2-§ Degrees. 
if. Quick- Lime .... 1^ 
1 6 . Sal Glauber i .... 2 
1 7. The Cold of Jr* may ftill be considerably in- 
creas'd by a Mixture of Sprit of Wine f about a 
Drinking-glafs full of Spirit of Wine to a Pound of 
beaten Ice . 
18. The Cold of Ice will not increafe, unlefs the 
Ice melts. 
EXPERIMENTS . 
Put into one Veffel four Ounces of Ice beaten very 
fmall, and into another Veffel two Ounces of Sea- 
Salt j fet the two Veffels in a Mixture of Ice and Salt, 
which is to be renew'd ftill, till by means of the Ther- 
mometer you find, that the Salt and the Ice of the 
two firft Veffels have acquir'd each of them 10 or 12 
Degrees of Cold 5 then mix your Salt with your Ice, 
and this Mixture will not increafe the Degree of Cold 
that the Ingredients had acquir'd, becaufe the Mixture 
does not melt. 
But if inftead of Salt you mix'd with your Ice 
Spirit of Nitre cool'd to the fame Degree as the Ice , 
as this laft is liquid, it will melt the Ice , and confi- 
derably increafe its Cold. 
19. Salt mix'd with Water, increafes its Cold. 
20. Of all Salts, Sal Ammoniac gives the greateft 
Degree of Cold; fo that if that Salt has been cool'd 
in Ice , and then one Part of it be thrown into two 
Parts of Water cool'd to the fame Degree in Ice , that 
Water will become colder than Ice, and will freeze 
other Water thrown into it in a fmall Quantity. 
R r 
This 
