Silliman, Professor, his interpretation of
the word beginning, and of the days
of the Mosaic creation, i. 18.
Silurus, spine of, i. 290.
Silurian system, its geological place,
and history of its establishment, i.
527 ; recognition of, on the continent,
i. 528; divisions of, ii. 104.
Simple minerals, definition of, 571.
Siphuncle, structure and functions of in
nautilus, i. 321 ; arguments from
fossil portions of, i. 326—328.
Skiddaway island, bones of megatherium
found in, i. 143.
Sloth, peculiarities in the structure of
living species, no imperfections, i.
141 ; adapted to live on trees, i. 142.
Smyth, Capt., experiments on Massey’s
log and bottles sunk in a deep sea, i.
345.
Soemmering, Professor, pterodactyle described
by, i. 223.
Soldani, his collection of fossil shells
in Tuscany, i. 117.
Solenhofen.pterodactyle found at,i.221,
223; libellulre and other insects
found at, i. 221; fossil fishes of, i.266;
fossil crustaceans from, i. 387.
Species, changes of indicate changes
of climate, i. 116.
Speeton, hamites found at, i. 368.
Spiders, fossil in jurassic and tertiary
strata, i. 406.
Spinax acanthius, horny dorsal spine
of, i. 290.
Spirula, derived from a sepia, i. 362,
316; ii. 63.
Springs, how supplied by stratified
rocks, i. 70; origin and importance
of, i. 556, 561; ordinary supply of
rivers by, i. 558 ; causes of their
production, i. 558 ; supply from rain
water, i. 559, 570; systems of, near
Bath, i. 560; prod uce'd in Derbyshire,
by faults, i. 560 ; two systems
of, originating in faults, i. 560; local
causes of irregularities in, 569.
Squaloids, extent of, 287.
Stark, Dr., on changes of colour in
fishes, i. 209.
Star fish, number of ossicula in, i. 441.
Steam power, prodigious effect of, i.
533 ; amount of, employed in Cornwall
and in England, i. 534, 535.
Stelleridans, geological commencement
of, i. 416 ; structure of fossil, similar
to that of existing species, i. 416.
Steneosaurus genus established by St.
. Hilaire, i. 252.
Sternberg, Count, his Flore du Monde
primitif, i. 456; on cycadere and
zamites in the coal formation, i.
492 ; his discovery of fossil scorpions,
i. 406.
Stigmaria, form and character of, l.
476, 477; dome-shaped trunk, i.
476; internal structure of, i. 477 ;
probable aquatic habit, i. 478.
St. Hilaire, Geoffroy de, his new genera
of fossil crocodilians, i. 252.
St. Ouen, Artesian well at, i. 562.
Stones, none have existed in their present
state for ever, i. 572.
Stonesfield, mixture of marine and terrestrial
animals in oolite at, i. 121;
pterodactyle found at, i. 221 ; mega-
losaurus found at, i. 234 ; scales of
testudinata found at, i. 258 ; castings
of marine worms at, i. 260 ; remains
of marsupialia found at, i. 265;
rhyncholites found at, i. 319.
Stratified rocks, aggregate thickness of,
ir 38.
Straus, on eyes of insects, &c. i.
397.
Sturgeons, functions of living species,
i. 279.
Sublimation, theory of veins filled by, i.
551.
Succession, eternal, of species disproved
by phenomena of primary rocks, i.
54»
Sumner, Bishop, his records of Creator,
ii 33.
Superposition, regular order of in strata,
i. 6.
Surturbrand, brown coal of Iceland, i.
509, 510.
Syringodendron, name applied to many
species of sigillaria, i. 472.
Tankerville, Lady, zamia in conservatory
of, i. 494.
Taylor, Mr. R. C., on fossil fuci in
Pennsylvania, i. 452.
Taylor, Mr. I. C., on duty of steam
engines, i. 532 et seq.; on beneficial
disposition of metals, i. 554.
Teleosaurus, genus of, established by
St. Hilaire, i. 252 ; skeleton of from
Whitby, i. 253.
Temperature, changes indicated by fossil
vegetables, 453 ; proofs of gradual
diminution of, i. 507.
Tertiary strata, character of, i. 76;
character of their fossil vegetables, i.
453.
Testudo grseca, recent footsteps of, i.
261.
Tetragonolepis, fossil species of, i. 124.
Theories, Huttonian and Wernerian,
i. 44,551.
Thompson, Mr., pentacrinus europaeus
discovered by, i. 432.
Thomas, Mr. R., map and sections of
mining district near Redruth, i. 550.
Tiedemann, on bones in star-fish, i.
441.
Tilgate forest, reptiles discovered by
Mr. Mantell in, i. 120.
Time, lapse of long periods universally
admitted, i. 13 ; proof of long lapse
of, i. 116 ; proof of lapse of, during
deposition of strata, i. 377,
Torpedo, fossil in tertiary strata, i. 291.
Torre D’Orlando, fishes perished suddenly
at, i. 124.
Tortoises, number of existing families,
i. 255; divisions of fossil ditto, i.
256 ; extent of fossil species, i. 256;
marine species from Claris, i. 257 ;
fossil land species, rare, i. 258 ; footsteps
of in Scotland, i. 259 ; freshwater
species, locality of, i, 258.
Tour, supposed of a foreigner through
England, i. 1.
Tours, Artesian wells in chalk of, i.
566. -
Townsend, Mr., on origin of springs, i.
560.
Trachelipods, two sections of, carnivorous
and herbivorous, i. 297 ; carnivorous,
perforate living shells, i.
298 ; carnivorous rare before the tertiary
strata, i. 299; herbivorous, extend
through all strata to the present
Tryonix, fossil, localities of, i. 257.
Trygon, fossil in tertiary strata, i. 291.
Tucker, his speculation as to possible
existences in the interior of the earth,
i. 57 ; his view of the relations of the
world to man, i. 99.
Tufa, calcareous, local deposits of, ii.
11.
Turin, bones in museum at, i. 93.
Tunilite, character and extent of, i.
370.
Turtles, fossil, i. 256, 257.
Dlodendron, character of, i. 475.
Unity, geological argument for the
time, i. 299; carnivorous, succeeded
to functions of extinct carnivorous
cephalopods, i. 300, 312.
Trachyte, character and phenomena
of, ii. 7.
Trap, various phenomena of, ii. 6.
Transition series, history and extent of,
i. 60 ; strata, character of their fossil
vegetables, i. 453.
Transmutation of species, disproved in
the case of fishes, i. 294; theory of,
opposed by trilobites and animals
allied to them, i. 395; associated
with development by Lamarck, 585.
Trevelyan, Mr. W. C., his discovery of
coprolites near Leith, i. 199.
Trilobites, geographical and geological
distribution of, i. 389; genera and
species of, i. 391; history and structure
of, i. 391; living animals allied
unity of the Deity, i. 582, 583, 584.
Val D’Arno, bones in fresh water
formation of, i. 93.
Vapour, influence of in causing elevations
to, i. 392 et seq.; eyes of, i. 396 ;
physiological infer :nces from fossil
eyes, i. 401 et seq
of land, i. 43.
Vegetables, study of fossil important, i.
450; recent sub-marine, divisions
of, i. 451 ; fossil sub-marine, divisions
of, i. 452 ; terrestrial, geological
distributions of, i. 452 ; remains
of, preserved in coal formation, i.
457, 458; remains of in transition
strata, i. 163, 459; genera, most
abundant in coal, i. 479 ; proportions
of families in coal formation, i. 480 ;
remains of, in secondary strata, i.
490 ; remains of, in tertiary strata, i.
507 ; numbers of fossil and recent
species, i. 521 ; characters of during
the three great geological epochs, i.
520—522 ; connection of with phy-
sico-theology, i. 523.
Veins, mineral, origin and disposition
of, i. 548, 550 ; most frequent in
early rocks, i. 549 ; theories respecting
origin of, i. 551; apparatus for
production of, i. 570; granitic, intersecting
older granite, ii. 4 ; of sie-
nite, porphyry, serpentine and greenstone,
intersecting other rocks, n. 5 ;
mineral, influence of electro-magnetic
action in, ii. 107—109.
Vertebrata, represented by fishes in the
transition formation, i. 62.
Volcanos, present effect of, i. 47.
Volcanic forces, their effects on the
condition of the globe, i. 49.
Volcanic rocks, frequent in tertiary
strata, i.' 89 ; of modern formation,
ii. 7.
Voltz, M., onmantellia from Luneville,
i. 492.