[INDEX.]

[The numbers refer to the paragraphs]

Action and reaction equal, [182]

Air, compressibility of, [152]

Air, elasticity of, [161]

Air, density of, dependent on pressure, [158]

Air, pressure of, as affecting the boiling point, [171], [327]

Air, currents in, from heat, [281]

Air, solution of water in, [287]

Air attracted by the earth, [148]