- principle of inverse method, 244.
- Double refraction, 426.
- Dove’s law of winds, 534.
- Draper’s law, 606.
- Drobitsch, 15.
- Duality, 73, 81;
- law of, 5, 45, 92, 97.
- Dulong and Petit, 341, 471.
- Duration, 308.
- E
- ε, 330, 769.
- Earth, density of, 387;
- ellipticity, 565.
- Eclipses, 656;
- Egyptian records of, 246;
- of Jupiter’s satellites, 294, 372;
- solar, 486.
- Electric, sense, 405;
- acid, 428;
- fluid, 523.
- Electric telegraph, anticipations of, 671.
- Electricity, theories of, 522;
- duality of, 590.
- Electrolysis, 428, 530.
- Electro-magnet, use of, 423.
- Elements, confusion of, 237;
- definition, 427;
- classification, 676, 677, 690.
- Elimination, 58.
- Ellicott, observation on clocks, 455.
- Ellipsis, 41;
- of terms, 57.
- Elliptic variation, 474.
- Ellipticity of earth, 565.
- Ellis, A. J., contributions to formal logic, 172.
- Ellie, Leslie, 23, 375.
- Ellis, W., on moon’s influence, 410.
- Emanation, law of, 463.
- Emotions, 732.
Table of Contents
INDEX.
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