Page:History of the Royal Society.djvu/248

 The seventh Sort are about those which are call'd sensible Qualities; as of Freezing; of Cold, and Heat; of freezing Water freed from Air; of the Time and Manner of the Contraction in freezing luke-warm Water; of the Temperature of several Places, by seal'd Thermometers; as of several Countries; of the Bottoms of deep Mines, Wells, Vaults, on the Tops of Hills, at the Bottom of the Sea.

Experiments on the Contraction of Oil of Vitriol; and diverse other Oils by freezing; of freezing bitter Tinctures; of freezing several ting'd Liquors, and driving all the Tincture inward to the Center; of shewing Ice to be capable of various Degrees of Cold, greater than is requisite to keep it Ice; of producing Cold by the Dissolution of several Salts; of freezing Water without Blebs; of a membranous Substance separable from the Blood by freezing; of a Thermometer in rarified and condens'd Air; of very easy freezing of Oil of Aniseeds; of making a Standard of Cold by freezing distill'd Water.

The eighth are of Rarity, Density, Gravity, Pressure, Levity, Fluidity, Firmness, Congruity, &c. as of the Nature of Gravity; of the Cohæsion of two flat Marbles; of compressing the Air with Mercury to find its Spring; of the Weights of Bodies, solid and fluid; of Rarefaction and Condensation by the Help of Mercury; of the Tenacity of several Bodies; of the turning of two very fluid Liquors into one solid Mass, by mingling them together.

Experiments for examining, whether the Gravity of Bodies alter, according as they are carried a good Way above or below the Surface of the Earth; of the Rh