Note 4 — LECTURE I. THE FORCE OF GRAVITATION.
Reading edition
Pages 23 and 24. Power or Property in Water.—This power—the heat by which the water is kept in a fluid state—is said, under ordinary circumstances, to be latent or insensible. When, however, the water changes its form, and, by uniting with the lime or sulphate of copper, becomes solid, the heat which retained it in a liquid state is evolved.