GENERAL INDEX. 



711 



Devonshire, South, Miss C. A. Raisin 

 on the metam orphic rocks of, 715 ; 

 map of part of, 716. 



Diabase, altered, from the Hereford- 

 shire Beacon, Malvern Range, 496 ; 

 from the Hollybush Pass, Malvern 

 Range, 500. 



Diagram showing alternation of Gault 

 and Lower Chalk between Cam- 

 bridge and Hunstanton, 595. 



showing the thinning-out of the 



Gault, and the amount lost by 

 erosion between Cheddington and 

 Dersingham, 595. 



Diastopora sarniensis, vai\ perangusta, 

 342. 



suborbicularis. 342. 



Diatoms, freshwater, presence of, in 



Bagshot beds, 381. 

 " Diglomerates," 520, 523. 

 Dingle, between the Worcestershire 



Beacon and North Hill, rock from 



the, 494. 



Dinosaurian remains in the collection 

 of A. Leeds, Esq., of Eyebury, 

 Northamptonshire, 693. 



vertebra? from the Cretaceous of 



India and the Isle of Wight, 156. 



Diorite, of Galway. foliation in the, 

 522 ; sections of, in granite near 

 Grlendalough, 520, 521. 



, jointed, section of granite in, 



near Grlendalough, 519, 520. 



, hornblende-gneiss formed from, 



in the Malvern Hills, 528. 



, from the Dingle, Malvern 



Range, 494 ; from the Worcester- 

 shire Beacon, Malvern Range, 496. 



Diorite-gneiss, duplex, 532 ; granite-, 

 533. 



Diorites from North Hill, Malvern 

 Range, 492, 493. 



from Swinyard's Hill, Malvern 



Range, 501, 502. 



in the schists of the Malvern 



Hills, 526. 



of the neighbourhood of Grlenda- 

 lough, 519-521. 



Diphyphylium, Mr. J. Thomson on 

 the genus, 33. 



Blackwoodi, 36. 



, var. approximation, 36. 



• concinnum, 35. 



cylindricurn, 36. 



gracile, 37. 



latiseptatum, 37. 



, var. giganteum, 37. 



, var. interruption, 37. 



Dixcart Bay, Sark, 325. 



Dol, section at bend of river Elwy, 

 near, 75. 



Dolerites, fragments of, in the Essex 

 Drifts, 355. 



Donald, Miss Jane, on some carbon- 

 iferous species of Murchisoma in 

 our public Museums, 617. 



Donations to the Library and Museum, 

 Proc. 83. 



Dover, well-boring at the convict- 



prison at, 199. 

 Drift. Clwydian, 79 ; marine, of North 



Wales, 79, 83; Essex, rocks of, 



351. 



Drifts of the Yale of Clwvd, &c, 73 ; 

 table of fossils of the, 93-97. 



Dry Chalk Valleys and Coombe rock, 

 on the origin of, 364. 



Dukinfield, grooves and quartzite 

 boulders in the Roger Mine at, 599. 



Duncan, Prof. P. M., on a new genus 

 of Madreporaria (Glypkastrcsa), 

 with remarks on the morphology of 

 Glypliastr&a Forbesi, Ed. & H., 

 from the Tertiaries of Maryland, 

 XL S., 24. 



, on the Echinoidea of the Creta- 

 ceous strata of the Lower Narbada 

 Region, 150. 



, revision of the Echinoidea from 



the Australian Tertiaries, 411. 



Duplex diorite-gneiss, 532. 



Diirnten, lignite of, 401. 



Dykes, intrusive, in Sark, 332. 



Earthquakes during the eruption of 

 Mount Tarawera, New Zealand, 

 181-183. 



Easthampstead Church, sections of 



Bagshots near, 387. 

 Echinobrissus austral ias, 420. 

 Echinoidea of the Cretaceous strata of 



the Lower Narbada Region, 150. 

 from the Australian Tertiaries, 



411. 



Echinolampas ovuluru. 420. 



Ejectamenta of the Tarawera erup- 

 tion, 184. 



Ekaterinebourg, notice of Exhibition 

 to be held at, Proc. 86. 



ElaBolite-syenite in Brazil, 457. 



Elsden, Mr. J. Y., on the Superficial 

 Geology of the Southern Part of the 

 Wealden 637. 



Elwy, River, section at bend of, near 

 Dol, 7 5 ; section in the east bank of 

 the, below the Mount, St. Asaph, 

 81. 



England, TTpper Jurassic Rocks of, 

 correlation of, with those of the 

 Swiss Jura, 229. 



Entalopihora intricaria, 340. 



wanganuiensis, 340. 



