TIE THERMOMETER. 



Advantages of mercurial Thermometer. — Method of constructing one. — To pnrify the Mercury. — 

 Formation of the Tube.— To fill the Tube. — Determination of the freezing and boiling Points. — 

 Modes of Graduation. — Alcohol Thermometers. — Difficulty of fixing the boiling Point. — Useful- 

 ness of the Thermometer.— History of its Invention.— Methods of comparing Scales of different 

 Thermometers. 





