INDEX. 129 



Voltzia, genus of coniferae in new red 

 sandstone, i. 485. 



Watchet, nacre of ammonites pre- 

 served in lias at, i. 376. 



Water, its rank in geological dynamics, 

 i. 36 ; supplied to springs by strati- 

 fied rocks, i. 70 ; its agency in pre- 

 serving organic remains, i. 127 ; cir- 

 culation of in metallic veins, i. 546 ; 

 perpetual circulation and functions 

 of, i. 557, 55a. 



Water-balloon, its action analogous to 

 that of the air chambers in the shell 

 of nautilus, i. 607. 



Waters, not created on the third day of 

 Mosaic cosmogony, i. 26 ; sources of 

 mineral and thermal in faults, i. 569. 



Watt, his experiments on crystalliza- 

 tion of bodies cooled slowly, i. 41. 



Webster, Mr., section prepared by, ii. 2 ; 

 dirt bed, &c. in Portland discovered 

 by, i. 613 ; matrix of silicified trees 

 in Portland ascertained by, i. 613 ; 

 Purbeck series distinguished from 

 Portland oolite by, i. 613 ; tertiary 

 formations in the I. of Wight disco- 

 vered by, i. 77. 



Weinbohla, sienite, intersecting and 

 overlying chalk at, ii. 5. 



Weis, Professor, his account of bones of 

 megatherium, i. 160 ; his belief that 

 the megatherium had armour, i. 161. 



Wells, causes of rise of water in, i. 561. 



Werner, his theory of the formation of 

 stratified rocks, i. 44; of veins, i. 551. 



Wheatstone, Prof., on crystals produced 

 by electro-chemical action, i. 552 ; 

 his opinion of the value of Mr. Fox's 

 and M. Becquerel's electro-chemical 

 researches, i. 617. 



Whewell, Mr., his view of the nebular 

 hypothesis, i. 40 ; his report on mi- 

 neralogy, i. 598. 



Whitby, ammonites from, i. 339. 



Wifcliezka, salt iu tertiary formation, i. 

 72. 



Winds, effect in causing undulations 

 during the formation of stone in Po;t- 

 land, i. 495 ; effect in forming strata 

 in Bermuda and in Cornwall, i. 197. 



Witham, Mr., his publications on fossil 

 conifers, i. 484, 485, 488. 



Worm holes, fossil, i. 260. 



Yarrell, Mr., on the vision of birds, 

 i,173. 



Zamia pungens, mode of inflorescence, 

 i. 494. 



Zamia spiralis, buds on trunk of, i. 500. 



Zamia horrida, section of trunk of, i. 497 . 



Zieten, Mr., his description of fossil pens 

 and ink bags in Wirtembeig, i. 308. 



Zoology, study of, indispensable to geo- 

 logy, i. 111. 



FINIS. 



C. Whittingham, looks Court, Chancery Lane. 



