INDEX. 



463 



Dorking, height of hills near 



Dover, height of cliffs near ...... 



Dunkerry Beacon, height of ...... 



Durham and Northumberland. N. J. Winch, Esq. on the 

 Geology of ........ 



Dyke of basalt in the coal-field of Northumberland and Dur- 

 ham, described ........ 



effect of on the coal where in contact with it 21, 24, 25 



mineral resembling adularia found in that at Coley Hill 



horizontal section of that at Walker colliery 



at Coley hill described 



at Walker colliery .... 



— ■ — at Walbottle Dean .... 



— — at Tynemouth castle .... 



at Butterby 



Ninety fathom ..... 



Birtley 



Thistle pit 



— — Heworth 



<-< of basalt in the lead mine measures 



— at Tynemouth Priory .... 



traversing limestone in Northumberland. Mr. Benmet's 



account of one ........ 



the whin composing it different from that of other deposits 



through slate at Caterpallet composed of felspar mixed 



with talc . . . 



PACE 



437 



437 

 437 



2J 



26, 27 

 21 

 22 

 21 

 22 

 23 

 24 

 24 

 25 

 27 

 28 

 28 

 76 

 96 



102 

 104 



109 



Elvan, the name given to porphyritic veins in Cornwall 



, a Cornish term applied to chlorite and quartz 



Encrini, found abundantly in the black rock of* Bristol 

 Epidote, forms a constituent part of the trap of Garsven in Sky 

 Exmoor, height of ....... 



Extracts, from the Minute book of the Geological Society 



401 

 152 



198 

 188 

 437 

 443 



Fetid limestone, found in botryoidal masses in the magnesian 

 limestone of Hartlepool ...... 



3 n 2 



