Tails of Comets, 281.
Telegraph used for Comets, 267.
Telescope of Dunsink Observatory, 96.
Telescope of Yerkes Observatory, 98.
Telescopes, 92;
Reflecting, 232;
Herschel’s, 233.
Telescopic Aid, 200.
” View of Moon, 101, 104.
Tethys, Distance and Period of, 392.
Theory to account for the Sun’s Rising and Setting, 48.
Thursday, 135.
Ticket to Alpha Centauri, 339.
Time occupied by Light and Stars, 335.
Titan, Distance and Period of, 392.
Titania, 243.
Titania, Distance and Period of, 392.
Top-spinning under Air Pump, 183.
Total Eclipse of the Sun, Appearances during, 40.
Toy, Burning-glass not merely a, 6.
Train to the Sun, 18.
Transit of Venus, 154.
Trouvelot’s Drawing of Eclipse, 41.
Trouvelot’s Drawing of Solar Prominences, 45.
Tuesday, 135.
Twilight, 47.
Two Eyes Better than One, 19.
Tycho Brahe, 170.
Tycho’s Method of Observing, 172.
Tyndall’s, Professor, Heating Effect of Electric Lamp, 6.