D’Alton,, his figures of megatherium, i.
142.
Darmstadt, remains of mammalia in
museum at, i. 91.
Darwin, Mr. C., megatherium found by,
ii. 20; his observations on the Cordilleras
of Chili, i. 549.
Daubeny, Dr., on cause of thermal
springs, i. 570; on indivisibility of
ultimate particles of matter, i. 576.
Days, supposed to imply long periods,
i. 17.
Dax, shells found at, i. 357.
Death, sudden, desirable for irrational
animals, i. 130.
Dekay, Dr., discovered coprolites in
New Jersey, i. 190.
De la Beche, his belief in successive
creations of new species, i. 55 ; his
figures of ichthyosauri, i. 176; on
different specific gravity,of shells, i.
302; observations on living polypes
of caryophyllia, i. 444 ; observations
on genera of corals in transition
rocks, i. 445,
Deluge, mosaic stratified rocks not produced
by, i. 16.
Depression, proofs of in I. Portland, i.
496.
Deshayes, his division of tertiary strata,
i. 78.
Desnoyers, M., on Faluns of Tour-
raine, i. 90.
Desmarets, memoir on fossil crustaceans,
i, 388.
Detritus, origin of strata from, i. 42.
Development, theory of disproved by
geological phenomena, i. 54; theory
of opposed by Cuvier, i. 87 ; definition
of, i. 585.
Dillwyn, Mr., his paper on tracheli-
pods, 298, 301.
Diluvium, animals immediately preceding
the formation of, i. 95,
Dinotherium, largest of terrestrial mammalia,
i. 92, 598; found at Epple-
sheim, in miocene strata, i. 135,136;
description of by Kaup, i. 136; occurs
in France, Bavaria and Austria,
i. 136 ; molar teeth of like
tapirs, i. 136; giganteura, eighteen
feet long, i. 136; shoulder blade of,
like that of a mole, i. 136; uses of
tusks in the lower jaw of, i. 138;
molar teeth of resemble those of tapirs,
i. 137; an aquatic herbivorous
animal, i. 137, 139; adapted to a
lacustrine condition of the earth, i.
139; localities and description of, ii.
18 ; proboscis and claws of, ii. 19.
Dirt bed, soil of subterraneous forest in
' Portland, i. 495, 496.
Disturbing forces, beneficial results of,
i. 539—541, 548.
D’Orbigny, M. his classification of ce-
phalopodous mollusks, i. 382 ; trilo-
bites and shells found in the Andes
by,i. 389.
Draco volans, has no true wings, i.
225.
Dufrfinoy, on iron mines in the Pyrenees,
i. 549.
Dujardin, new class of rhizopodes discovered
by, ii. 64.
Dumfries, fossil footsteps near, i. 259.
Duncan, Dr., his discovery of fossil
footsteps near Dumfries, i. 259.
Durdham Down, remains of reptiles at,
i. 115.
Durham, salt springs in coal formation
near, i. 72.
Dykes, intersect strata of every age, i.
48 ; gradations of from lava to granite,
i . 48 ; various crystalline rocks
composing, ii. 5 ; changes produced
by, on adjacent rocks,, ii. 9.
Dynamics, geological, extent of, i. 36.
Earth, distribution of the materials of,
i. 5 ; th.eory of, much advanced, but
not yet perfect, i. 12; two distinct
branches of its history, i. 34; originally
fluid from heat, i. 39 ; advantageous
dispositions of its materials,
i 98.
Earthquakes, beneficial agency of in
the economy of the globe, i- 540.
Echidna, has furcula and clavicles like
ornithorhynchus, i. 182.
Eehinidans, geological extent of, i.
415.. ‘
Echinoderms,. fossil, bilateral structure
of, i. 415.
Egerton, Sir Philip, his discoveries near
Newcastle-under-Line, i. 276; on
mechanism of atlas and ceryical vertebras
of ichthyosaurus, ii. 24—26.
Eggs, fossil, of aquatic birds, i. 86.
Elements, identity and functions of, i.
36 ; proofs of design in, i. 571 ; ever
regulated by same laws, i. 577;
primordial adaptations of, i. 578;
adaptation qf to vegetables and animals,
i. 579.
Elevation, general history of, ii. 4 ;
dry lands formed by, i. 43 ; proofs
of in I . Portland, i. 495, 496.
Elevations, number observed by Elie
de Beaumont, ii. 6 ; various periods
of, ii. 6 . ,
Ellis, Mr., his conclusions from the
study of corallines, i. 448.
Emys, fossil, localities of, i. 257, 258.
Encrinites moniliformis, lily encrinite,
i. 421; mechanical adaptations in, i.
421 ; number of component ossicula,
i. 422 ; vertebral column, mechanical
contrivances in, i. 423—426;
body and upper extremities, i. 427,
428; physiological history of, i. 431.
Endogenites echinatus, fossil trunk allied
to palms, i. 516.
Engi in G laris, fishes of, i. 284.
England, effects of geological structure
on inhabitants'of, ii. 3.
Enjoyment, aggregate of increased by
existence of carnivora, i. 129.
Enstone, cetacea in oolite at, i. 115.
Entomolithus paradoxus, i. 391.
Entomostracans, fossil, i. 390.
Entrochi, or wheel stones, columnar
joints of encrinite, i. 424.
Eocene, division of tertiary strata, i. 78.
Equisetacese, extent of the family of,
i. 460 ; fossil genera of, i. 460 ; in-
, creased enlargement in size of, i. 461 ;
fossil species in coal formation, i.
461.
Equivocal generation, disproved in case
of infusoria, i. 447.
Ernouf, General, his account of human
skeletons at Guadaloupe, i. 104.
Estuaries, admixture of fresh water and
marine exuvire in, i. 120.
Eternal succession, theory of, disproved
by. geology, i. 54, 59.
Eternity of the world, disproved by
geology, i. I I . ' , .
Eyes, fossil, resembling those of existing
animitls, i. 31; fossil remains of, i. 31,
173,396,402 ; structure of, in recent
crustaceans allied to trilobites, i. 399;
physiological and physical inferences
from structure of, i. 401.
utility of, in primary rocks and metallic
veins, i, 545,546.
Favularia, character of, i. 475.
Ferns, distribution and number of existing
F a l u n s , of Tourraine, mammalia found
in, i. 90.
Faraday, Mr., notice on preparing the
human lungs for diving, i. 180.
F a u j a s , M., observation on fossil trees in
lignite near Cologne, i. 509.
Faults, on geometrical laws of; i. 540 ;
utility of, in draining coal mines, i.
541_544 ; definition of, by Mr. Conybeare,
i. 542; utility of, in guarding
coal mines, i. 547; utility m
producing springs, i. 545, 560, 569 ,
species, i. 462 ; proportion of,
to living phanerogamiæ, i. 463 ; temperature
indicated by fossil species,
l. 463 ; proportions of in the coal
formation, i. 464 ; living and fossil
arborescent species of, i. 464, 465 ;
proportions of, in Secondary and tertiary
strata, i. 465.
Final causes, consideration of, admissible
in philosophical investigations, i.
547.
Fire,its rankin geological dynamics, 1.36.
Fisher, Mr., figures prepared by, ii. 2.
Fishes, fossil, causes of sudden death
of, i. 122 ; sudden destruction of in
lias formation, i. 124 ; fossil intestinal
structure of, i. 198; coprolites
derived from, i. 198 ; petrified intestines
of, or cololites,i. 200 ; livingspc-
cieS observed by Cuvier, i. 265 ; fossil
species, history of by Agassiz, i. 264,
267 ; numbers of fossil generaand species,
i. 267 ; classification founded on
scalds, i. 268 ; orders of established
by Agassiz, i. 269 ; geological results
derivedfrom fossil fishes, i. 270, 272 ;
changes ih fossil genera and families
abrupt, i. 271 ; fossil, most important
to geology, i. 267, 273 ; sauroid, character
of, i. 273 ; sauroid, higher in
the scale of organization than ordinary
bony fishes, i. 294 ; number of
genera in sauroid family, 274; sauroid,
character of living species, i.274 ;
sauroid geological extent of, i. 275
_277 ; in strata of the carboniferous
order, i. 278 ; peculiar from of tail
in early strata, i. 279 ; in magnesian
limestone, i. 280; in muschel kalk,
lias and oolite, i. 281 ; in the chalk
formation, i. 283 ; in the tertiary formations,
i. 284 ; family of sharks, i.
286 ; results from observations on, i.
292 ; functions Of, in the economy of
' nature, P 293 ; 'form of their crystalline
lens; i. 398. . .
Fissures, site of mineral veins in, i .
548. ... . , , .
Fitton, Dr., on alterations m level of sea
and land, i. 43 ; his observations
on Cypris Faba, in Wealden formation,
i. 118 ; his description of fossil
' cones, i. 485.
Fitzwilliam, Earl, cycas revoluta in
conservatory of, i» 500 ; trunks of