INDEX. 
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 cncrinite, 
i. 421 ; mechanical adaptations in, i, 
421 ; number of component ossicula, 
i. 422 ; vertebral column, mechani- 
cal contrivances in, i. 423 — 426 ; 
body and upper extremities, i. 427, 
428 ; physiological history of, i. 43 1 . 
Endogenites echinatus, fossil trunk al- 
lied to palms, i. 516. 
Engi in Ci laris, fishes of, i. 284. 
England, efteclsof 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. 
Eutomostracans, fossil, i. 390. 
Entrochi, or wheel stones, columnar 
joints of encrinile, i. 424. 
Eocene, division of tertiary strata, i. 78. 
Eipiisetace®, e.stent of the family of, 
i. 460 ; fossil genera of, i. 460 ; in- 
ci'caserl enlargement in sire of, i. 46 1 ; 
fossil species in coal formation, i. 
461. 
Equivocal generation, disproved in case 
of infusoria, i. 447, 
Ernouf, General, his account of human 
skeletons at Guailaloupe, i. 104. 
Estuaries, admixture of fresh water and 
marine exuviae in, i. 120. 
Eternal succession, theory of, disproved 
by geology, i, 54, 59. 
Eternity of the world, disproved by 
geology, i. 11. 
Eyes, fossil, resembling those of existing 
animals, i.31 ; fossil remains of, i. 31, 
173,396, 402 ; structure of, in recent 
crustaceans a Hied to trilobites, i. 399; 
physiological and physical inferences 
from stnicture of, i. 401. 
Fa lons, of Tourrainc, mammalia found 
in, i. 90. 
Faraday, Mr., notice on preparing the 
human lungs for diving, i. 180. 
Fauj as, 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. Co- 
nybeare, i. 542; utility of, in guard- 
ing coal mines, i. 647; utility of, in 
producing springs, i. 545, 560, 569 ; 
117 
utility of, in primary rocks and metal- 
lic veins, i, 545, 546. 
Favularia, character of, i. 475. 
Ferns, distribution and number of ex- 
isting species, i. 462 ; proportion of, 
to livingphauerogamiffi, i.463 ; tem- 
perature indicated by fossil species, 
i. 463 ; proportions of in the coal 
formation, i. 464 ; living and fossil 
arborescent species of, i. 464, 465, 
proportions of, in secondary and ter- 
tiary strata, i. 465. 
Final causes, consideration of, admissi- 
ble in philosophical investigations, i. 
547. 
Fire, its rankin geological dynamics, i.36. 
Fisher, ftlr., figures prepared by, ii. 2. 
Fishes, fossil, causes of sudden death 
of, i. 122 ; sudden destruction of in 
lias formation, i. 124 ; fossil intes- 
tinal structure of, i. 198 ; coprolites 
derived from, i. 198 ; petrified intes- 
tines of, or cololites, i. 209 ; living spe- 
cies observed by Cuvier,!. 265; fossil 
specie.s, history of by Agassiz, i. 261, 
267 ; numbers of fossilgcncra and spe- 
cies, i. 267; classification founded on 
scales, i. 268 ; orders of established 
by Agassiz, i. 269; geological results 
derived from fossil fishes, i. 270, 272 ; 
changes in fossil genera and families 
abrupt,!. 271 ; fossil, most important 
to geology, i. 267, 273 ; sauroid, clia- 
racter of, i. 273; sauroid, higher in 
the scale of organization than ordi- 
nary bony fishes, i. 294 ; number of 
genera in sauroid family, 274 ; sau- 
roid, character oflivingspucies, i.274 ; 
sauroid geological extent of, i. 275 
— 277 ; in strata of the carlioniferous 
order, i. 278 ; peculiar from of tail 
iu early straU, i. 279 ; in magnesian 
limestone, i, 280 ; iu muscliel kalk, 
lias and oolite, i. 281 ; in the chalk 
fonnation, i. 283 ; iu the tertiary for- 
mations, i. 284 ; family of sharks, i. 
286 ; results from observations on, i. 
292 ; functions of, iu the economy of 
nature, i. 293 ; form of their crys- 
talline lens, i. 398. 
Fissures, site of mineral veins m, i, 
Fltton.Er., on alterations in level of sea 
and land, i. 43 ; his observations 
on Cypris Faha, in Wealden forma- 
tion, i. 1 18 ; his description of fossil 
cones, i. 485. 
Filzwilliam, Earl, cycas revolula in 
conservatory of, i. 509 ; trunks oi 
