840 Report of the Committee 
by the fleam, as it is in finding the heat of liquors with 
the other thermometer, whenever the ball is not im- 
merfed to a fufficient depth ; fo that, on the whole, the 
former method of making and uiing thermometers 
feems much the beft. 
A much better way of avoiding the trouble of making 
a correction would be to have two fets of divifions made 
to fuch thermometers as are intended for trying the heat 
of liquors; one of which fhould be ufed when the tube 
is immerfed almoft to the top of the column of quick- 
ill ver; and the other, when not much more than the ball 
is immerfed, in which laft cafe the obferver fhould be 
careful that the tube fhould be as little heated by the 
fleam of the liquor as conveniently can be. It is difficult 
to give rules for conftruCting this fecond fet of divifions, 
as the heat of the quickfilver in the tube will be very 
different according to the temper of the air in the room, 
the quantity and nature of the fluid whofe heat is to be 
tried, the manner in which it is heated, and the other 
circumftances of the experiment ; but, on the whole, we 
think that, given in the following table, would be as pro- 
per as any. 
1 
Degree 
