Science and theology, 46.
Scotland, sandstone of, 131.
Sculpture in primeval times, 365.
Scythians on secular revolutions, 382.
Sea-urchius, 316.

Sea-weeds of Potsdam, 83.

((

"Upper Silurian, 124.
Sediments formed and distributed, 57.
distribution of, 132.

"L

Smell of petroleum illusory, 277, 278.
Smithsonian Institution, 210.
Solar heat wasting, 409.

"C

66 amount of, 422.

(6

"L

43.
Solenhofen, fossil of, 184.

Specimens of rocks about our doors, 62.
illustrative, of animals, pre-

<<

Seeds, vitality of, 250, 260.
Selma, Alabama, reptiles of, 190.
Septa in chambered shells, 119.
Serapis, Temple of, 19.
Serpents, position of, 168.
Shaft of a mine, 139.

"L

miners descending a, 140.
Shaler, N. S., on central heat, 433.
Shales a source of petroleum, 281, 282, 288.
Shell-heaps of primeval times, 360, 364.
Shells, fossil and recent, 14.
Shumard, B. F., on Potsdam sandstone, 79.
"Lower Helderberg, 125.
Siberian ice and elephants, 221.
Sibylline Books, 384.
Sigillaria, 158, 159.
Silurian rocks, 75.

66

66

CL

(C

Upper, rocks and fossils of, 124. Sun cooling off, 408.
Sipnon in chambered shells, 119.
Sivatherium, 203.

((

"L

Skovmose in Denmark, 253.

system in a blaze, 36, 38.

66

rotating in a gaseous state,

Spectroscope and its revelations, 425.
Speech possessed by primeval man, 363.
Spirifers, 316.
Spiritual bodies, 372.

CL phenomena, 371.
Spirits in search of oil, 280.
Splintery coals, 288.
Sponges in Lower Silurian, 82.
Springs and wells, 233.
Spring-poles in well-boring, 286.
Soils, changes in, and their effects, 251.

CL of prairies, see Prairies.
Somme, human relics in valley of, 356, 367.
Southern States, surface materials of, 222,

229.

St. Acheul, flint implements at, 356.
"Augustine, changes of level at, 22.
"Clair Lake and Flats, 241.
"John's group of rocks, 74.
period, climate of, 105.
Joseph, Michigan, climate of, 226.
Louis, Missouri, prairies of, 268.
Star-fishes, 316.

((

Stones in the soil, utility of, 265.
Stony Point, glacier action at, 217.
Strata, aqueous origin of, 18, 30.

"L

66

not created as we find them, 29.
mechanical and chemical, 62
Streptospondylus, 188.
Striæ, glacial, 215, 217.
Sturgeon, 166.

served, 32.
Specimens, illustrative, of primordial
matter, 41.

Syenites, 52.

Specimens, illustrative, of planetary Symplegades, character of, 25.
stages, 46.
Synthetic reptiles, 173.

"C

"

Submergence of the continents, 228.
"prairie region, 246.
Subsidence of the continent, 222, 311.
Substance, other forms of probable, 372.
Subterranean clay basins, 232.
Succession of strata, 133.

(C

""

"organic types, 326.
"ideas repeated, 327.
Suckers of cephalopods, 114.
Sugar-Loaf, Mackinac Island, 247.
Sumuerville, Tennessee, geology of, 255.

amount of heat from, 408.

distance of, 421.

constitution of, 426.

Superior, Lake, see Lake Superior.

"C

Superiority of man over brutes, 375.
criteria of, 323.
Supplies of petroleum, 286.
Surface materials of Southern States, 222.
assorted, 232.

"C

(L

(6
((

oil at Enniskillen, 292.
shows of petroleum, 276.
Sutro tunnel, 440.
Swales, 267.

Swallow, G. C., on Missouri, 125.
"Permian rocks, 172.

LC

"L

types, 318.

Syracuse, New York, geology of, 125.

Theistic opinions sustained, 46.
Theory of salt formations, 301.
Thompson, Sir Wm., on central heat, 435.
Thoughts in a coal mine, 148.

Co

on fossil footprints, 186.

U

Washington, Mount, marks of submerg-

ence on, 229.

Wastage of heat from the earth, 403, 404.

Water, ordeal by, 18.

#

as a rock, 37.

"invisible vapor, 53.

labors of, 398.

Water-sheds, 235.

Watson, views by, 420.

Watson, J. C., on precipitation of planets,

420.

Waukesha, geology of, 125.

Waverly rocks, position of, 127, 131, 165.

Wealden reptiles, 188.

Wells and springs, 233.

te for oil, 284, 285.

"C

West Virginia oil region, 2S9, 292.
46 salt works, 305.
Wheat, Egyptian, from mummies, 261.
Wheatley, C. M., on reptiles, 170.
Whewell on the fate of the solar system,

419.

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