1.0463) | 64 | .903 |
| Oil of Turpentine | 32 | .411 |
| Petroleum | 64-210 | .498 |
| Sulphuric Acid | 68-133 | .3363 |
+-------------------------------+----------------+-------------------+
| GASES |
+--------------------------+---------------+--------------+----------+
| | | Specific | Specific |
| | Temperature[2]| Heat at | Heat at |
| | Degrees | Constant | Constant |
| | Fahrenheit | Pressure | Volume |
+--------------------------+---------------+--------------+----------+
| Air | 32-392 | .2375 | .1693 |
| Oxygen | 44-405 | .2175 | .1553 |
| Nitrogen | 32-392 | .2438 | .1729 |
| Hydrogen | 54-388 | 3.4090 | 2.4141 |
| Superheated Steam | | See table 25 | |
| Carbon Monoxide | 41-208 | .2425 | .1728 |
| Carbon Dioxide | 52-417 | .2169 | .1535 |
| Methane | 64-406 | .5929 | .4505 |
| Blast Fur. Gas (approx.) | ... | .2277 | ... |
| Flue gas (approx.) | ... | .2400 | ... |
+--------------------------+---------------+--------------+----------+

Latent heat is not lost, but reappears whenever the substances pass
through a reverse cycle, from a gaseous to a liquid, or from a liquid to
a solid state. It may, therefore, be defined as stated, as the heat
which apparently disappears, or is lost to thermometric measurement,
when the molecular constitution of a body is being changed. Latent heat
is expended in performing the work of overcoming the molecular cohesion
of the particles of the substance and in overcoming the resistance of
external pressure to change of volume of the heated body. Latent heat of
evaporation, therefore, may be said to consist of internal and external
heat, the former being utilized in overcoming the molecular resistance
of the water in changing to steam, while the latter is expended in
overcoming any resistance to the increase of its volume during
formation. In