Duprez, influence of trees on the intensity of electricity in the atmosphere, 335.
Eandi, Vassalli, electric perturbation during the protracted earthquake of
Pignorol, 206.
Earth, survey of its crust, 72; relative magnitude, etc., in the solar system, 95-97; general description of terrestrial phenomena, 154-360; geographical distribution, 161, 162; its mean density, 169-172; internal heat and temperature, 172-176; electro-magnetic activity, 177-193; conjectures on its early high temperature, 172; interior increase of heat with increasing depth, 161; greatest depths reached by human labor, 157-159; methods employed to investigate the curvature of its surface, 165-168; reaction of the interior on the external crust, 161, 202-247; general delineation of its reaction, 204-206; fantastic views on its interior, 171.
Earthquakes, general account of, 204-218; their manifestations, 204-206; of Riobamba, 204, 206, 208, 212, 214; Lisbon, 210, 211, 213, 214; Calabria, 206; their propagation, 204, 212, 213; waves of commotion, 205, 206, 212; action on gaseous and aqueous springs, 210, 222, 224; salses and mud volcanoes, 224-228; erroneous popular belief on, 206-208; noise accompanying earthquakes, 208-210; their vast destruction of life, 210, 211; volcanic force, 214, 215; deep and peculiar impression produced on men and animals, 215, 216.
Ehrenberg, his discovery of infusoria in the polishing slate of Bilin, 150; infusorial deposits, 255, 262; brilliant discovery of microscopic life in the ocean and in the ice of the polar regions, 342; rapid propogation of animalcules and their tenacity of life, 343-345; transformation of chalk, 262.
Electricity, magnetic, 188-202; conjectured electric currents, 189, 190; electric storms, 194; atmospheric 335, 337.
Elevations, comparative, of mountains in the two hemispheres, 28, 29.
Encke, 106; his computation that the showers of meteors, in 1833, proceeded from the same point of space in the direction in which the earth was moving at the time, 119, 120.
Ennius, 71.
Epicharmus, writings of, 71.