Note 80 — Chapter VI

The theory of freezing mixtures is deduced from the doctrine of latent caloric. These are mixtures of saline substances which, at the common temperature, by their mutual chemical action, pass rapidly into the fluid form, or are capable of being rapidly dissolved in water, and, by this quick transition to fluidity, absorb caloric, and produce degrees of cold more or less intense.—Rev. Francis Lunn, On Heat: Encyclopædia Metropolitana.