124 
INDKX. 
described, i. 434 ; vertebral column 
of, i. 435 ; attached to lignite at 
I.yroe, i. 437; side arms, i. 438 ; 
stomach of, i. 439 ; body, arms, and 
fingers of, i. 440 ; number of bones 
prodigious, 441 ; concluding consi- 
derations on, i. 441. 
Perfection consists in adaptation of or- 
ganization to the functions of the spe- 
cies, i. 107. 
Pericardial fluid, its mode of action, i. 
326, 332. 
Perpignan, Artesian wells in basin of, 
i. 566. 
Pcrranzabulo, village buried by sand 
flood, i. 127. 
Peron, animal of spirula found by, i. 
362. 
Petavius, his interpretation of Genesis, 
i.l.,i.24. 
Pines, fossil in coal foimation and lias, 
i. 487 ; peculiarity in structure of, i. 
486. 
Placoidean, order of fishes, i. 269. 
Plesiosaurus, heteroclite character of, i. 
202 ; number and geological extent 
of species, i. 203 ; head, compound 
character of, i. 204; neck, great 
length of, i. 205 ; back and tad, i. 
207 ; ribs, peculiar character of, i. 
208 ; skin, Cuvier’s conjecture as 
to, i. 208 ; lungs, probable condi- 
tion of, i. 209 ; extremities acted as 
paddles, i, 210; probable habits of 
animal, i.211 ; concluding observa- 
tions upon, i. 214. 
Pliocene, division of tertiary strata, i. 
78 ; animal remains of, i. 92 ; evi- 
dences of history of, i. 93. 
Podocarya, fruit of, in inferior oolite, i. 
504. 
Poikilitic, terra proposed for forma- 
tions connected with the new red 
sandstone, ii. 38, 
Police of nature, i. 300 ; excessive in- 
crease of animals restrained by ,i. 1 33. 
Polypes, fossil remains of, i. 442 ; 
abundance of in warm climates, i. 
443 ; functions of in submarine eco- 
nomy, i. 444 ; effects in the produc- 
tion of strata, i. 445 ; concluding 
observations on, i. 447. 
Polypterus, i. 274, 
Population, how affected by geological 
causes, i. 4. 
Porphyry, veins and overlying masses 
of, ii. 5. 
Portland, petrified cycadeae found at, i. 
494 ; subterranean forest in, i. 494. 
I’ortsraouth. Artesian well at, 563. 
Prestwich, Mr., on insects from coal 
formation, i. 405, 
Prevost, M. Constant, on erect position 
of fossil trees at St. Etienne, i. 471. 
Primary stratified rocks, history of, i. 
50,51. 
Productions, natural, vary with the sub- 
strata, i. 5. 
Prout, Dr., his analysis of syphon of 
an ammonite, i. 352; on the non- 
eternity of molecular constitution 
of matter, i. 579 ; on adaptation of 
elements to the use of animal and 
vegetable bodies, i. 579. 
Province of geology, i. 1. 
Psammodus, i. 288. 
Pterodactyle, anomalous character of, i. 
221; where found, i. 221 ; Cuvier’s 
description of, i. 223 ; eight species 
of, i. 223; organs of flight, i. 225 ; 
vertebriB, character of, i. 226 ; pecu- 
liar mechanism in neck, i. 226 ; 
foot as in lizards, i. 227 ; toes, 
number and proportions of bones in, i. 
227 — ^231 ; probable food of, i. 232. 
Ptychodus, i, 288. 
Purbeck, estuary formations in isle 
of, 1. 120 ; iguanodon found in isle 
of, i. 242. 
Piilzberg, near Bonn, brown coal of, 
i. 509. 
I’usey, Professor, his interpretation of 
Genesis i. 1, &c. i. 22 — ^26. 
Philpotts, Miss, belemnites with ink 
bags m collection of, i. 374. 
Phillips, Professor, his views of fossil 
organic remains, i. 61 ; his illustia- 
tion of fossil astacids, i. 388 ; his 
tabular arrangement of ammonites, 
i. 334. 
Pholidophorus, i. 283. 
Physical geography, origin of in geo- 
logical causes, i. 5. 
Pycnodonts, i. 281, 282. 
Pycnodus, i. 283. 
Pyrenees, granite in chalk formation 
of, ii. 5. 
Radiata, abound in transition strata, i. 
62. 
Radiated animals, character of fossil 
species, i. 414. 
Ray. Mr., on usefulness of metals, i. 
555. 
Rays, fossil, i. 291. 
Reason, province of distinct from that 
of Revelation, i. 588. 
Refrigeration, gradual, of matter of the 
globe, i. 53. 
Reptiles, ages of, i. 166. 
