INDEX. 



Nodules, of iron-stone 428,439 



Nutmeg, supposed fossil 438 



Oak, petrified 393 



Oculus mundi. See Opal, hydrophauous. 



Opal, analysis of 353 



described 365 



hydrophanous 357 



analysis of 357 



Ostcocolla. See Syringites. 



Peas, petrified 452 



Peat, analysis of 137 



described 85 



found in various parts of the world ... 88 



England 91 



observations on, by various authors ... 

 opinions respecting the origin of 



87 

 97 



- origin of, different opinions respecting. 187 

 -- opinion respecting, by Dr. 



Anderson ....................................... 199 



- 'produced by the bituminous fermenta- 

 tion ........................................... ... 186 



spontaneous combustion of. ........ . ..... 193 



Pebbles, silicious ................................. 311 



- contained in Bamboo cane. 3'27 



- - - observations on the forma- 

 tion of .... ....................................... 311 



Pepys,Mr.hisexaminationof jasperized wood 33 I 



- --- his analysis of opaline wood ...... 34.7 



Petrifactions ....................................... 296 



-- accounted for by Professor Play- 



fair .............................................. 303 



- another theory of, proposed .... 306 



- - - calcareous, of New South Wales 381 



- explanation i>f, by Dr. Hutton... 300 

 -- Vide Fossils (secondarv) 

 -- improper as a general term ...... 33 



-- prot eeiling from bi;uminization 307 

 --- supposed to be formed by sub- 



stitution .......................................... 297 



-- th- -feting ............... 296 



Petroleum .......................................... 128 



- - analysis of ............................ 143 



- ipriaga ia Modeoa .................. l k; 



--- ia Coa)hrook-<lale ... ..... 1 J-7 



wells of, in the Burniha dominions 143 



VOL. I. 



flfi 



Piles, oak, said to be petrified 395 



Pipe-stone 402 



Pitch, mineral 128 



a product of the bituminous 



fermentation .219 



Pitch-stone, common 346 



analysis of, by Mr.Pepys 348 



.- by Mr.Klap- 



roth . .351 



. ligniform 345 



Pliny gave name to many secondary fossils . 16 



Plum-stone fossil 438 



Potatoe, supposed petrifaction of 444 



Pyrites, formation of, explained by Dr. Hut- 

 ton and Mr. Playfair 284 



opinion respecting 286 



spontaneous combustion of 297 



Quarries of Travertin 380 



Reed, petrified 426 



Root of carrot, petrified 444 



Roots, petrified 443 



rarely found 455 



Sandal tree, petrified 393 



Sandal-box, fossil 439 



Sapindus, berry of, fossil 439 



Schisti, vegetable impressions on 446 



Seeds, fossil 437 



Semi-opal 3J3 



remarks on Mr. Klaproth's exami- 

 nation of 354 



Shepey Island, fossils of 439,447 



Siberia, metallized wood of. , 388 



At 



Silex, contained in water.%7. 324 



1 forming tufa 326 



* forming stalactitic concretions 327 



in the rind of cane 327 



Shu s of coals, vegetable impressions on...... 420 



Spar, buuminoui 379 



Stangtngraupen 442 



Starry-stone of Chemnitz 401 



Steins of plants, petrified 423 



St me, Sarnian. See Lapis Sarnius. 



shaped like a human thigh, wonder- 



ful tale of 

 3 N 



