[ 6 74 ] 
* Sheldrake of Norwich. And befides the enabling 
him to perform his Operations with moreExa&nefs, 
thefe Inftruments would fave him a great deal of 
Fuel; for as Liquors, while boiling, are not capa- 
ble of receiving a greater Degree of Heat, all Fuel 
which is ufed more than to keep them in that State 
is ufelefs; and the like happens in many other 
Cafes. 
Thefe Inftruments would alfo be of great Service to 
Maltfters, Brewers, Diftillers, and Vinegar-makers 5 for, 
by Thermometers placed in different Parts of the Heap 
of wetted Malt, the proper Heat for its fprouting 
might be determined, and then regulated : The fame 
for the Heat of the Kiln when the Malt is fpreadon 
it. By Thermometers the Brewer may afcertain the 
Heat of the Water when he pours it upon the Malt, 
the Heat of the Wort when he fets it to work, and 
the Heat while working : And in. the like manner 
the Diftiller and Vinegar-maker, in a W ord, every 
Artificer, who employs Heat in his Bufinefs, may 
by thefe Inftruments be certain of every Degree ne- 
ceftary in each Part of his Work. 
Many Experiments {hew, that all known Bodies, 
whether fluid or folid, increafe their Bulk or rarefy 
by an Addition of Heat 5 and, on the contrary, con- 
tract or become more denfe by the Diminution of 
Hear, which is the Prefence of Cold : And thefe 
Alterations are always more or lefs fenftble in pro- 
portion to the natural Rarity or Denfity of the 
Bodies. The 
* Now Trufs-rnaker over again# the End of Sutfoli-Jtreet near 
Cbaring-Crofs, London, 1748 . 
