another, 46, 47;
shooting, 47;
speed of certain, 51;
study of, 31-80;
sudden flashing forth of, due to catastrophe, 46;
voyage through the, 44, 45;
star, wandering, 74.

Stellar realm, 31-80.

Storms,
circular, 111;
desert, 121, 122;
expansion of air contained in a hollow wall during
the passage of, 114;
great principle of, 105, 106;
in the Sahara, 121;
lightning, more frequent in summer, 167;
paths of, 115;
secondary, of cyclones, 112;
spinning, 115;
thunder, 165-167;
whirling, 106, 124;
whirling peculiarity of, 108, 109.

Strabo, writings of, 18.

Sun,
atmosphere of the, 73;
constitution of the, 72;
distance of the earth from the, 29;
effect from changes in the, and earth, 59;
envelope of the, 73, 74, 97;
experiments illustrating consolidation of disseminated
materials of planets and, 40;
finally, dark and cold, 42;
formation of the eight planets of the, 53;
heat leaving the, 41;
heat of the, 76;
imaginary journey from the, into space, 44;
mass of the, 76, 77;
path of the earth around the, 55;
physical condition of the, 71;
Prof. Newcomb's belief regarding the heat of the, 52;
spots, 75;
abundant at certain intervals, 72;
difficulty in revealing cause of, 75;
structure of the, a problem before the use of the telescope, 72;
table of relative masses of, and planets, 77;
three stages in the history of the, 71;
tides, 126;
why does it not act in the same manner as the moon? 78.

Surfaces, level, 90.

Surf belt, swayings of the, 137.

Swamps,
diagram showing remains of, 335;
Dismal Swamp, 95, 333;
drainage of, 334, 335;
fresh-water, 334, 335;
phenomena of, 167, 168.

Table-lands, 91.

Table of relative masses of sun and planets, 77.

Telescopes, 11, 12, 45;
first results of, 72;
power of, 11;
revelations of, 45.

Temperature,
effects of, produced by vibration, 42;
in the doldrum belt, 118;
of North America, 118;
of the Atlantic Ocean, 118.

Tempests, rate of, 99, 100.

Thunder, 166;
more pronounced in the mountains, 166.

Thunderstorms, 165, 166;
distribution of, 166,