Franklin, his discovery, [392]
Freezing, process of, described, [330]
Freezing point, why at 32°, [332]
Freezing in the midst of boiling, [327]
Freezing mercury, [318]
Freezing mixtures, [325]
Friction, [196-198]
Friction in machinery, [245]
Frost, [44]
Fur, how a non-conductor of heat, [305]