GENERAL INDEX. 



near, 358 ; section of strata at the 

 Berwyn phosphate mine, near, 360. 



Llyn Cwlyd, Snowdon, microscopic 

 structure of felstone of, 402. 



Longwathby, sections in the Settle- 

 and-Carlisle Railway-cutting at, 87. 



Lucina minuscula, 227. 



tenera, 300. 



Lyell, Sir Charles, notice of the de- 

 cease of, lxxvii ; extract from the 

 will of, lxxviii. 



Lympstone, section from Great Hal- 

 don to, 352 ; section from near 

 Minnicombe to, 352. 



Mackintosh, D., Esq., on the origin of 

 Slickensid.es, with remarks on spe- 

 cimens from the Cambrian, Silurian, 

 Carboniferous, and Triassic forma- 

 tions, 386. 

 , on some important facts con- 

 nected with the boulders and drifts 

 of the Eden valley, and their bear- 

 ing on the theory of a melting ice- 

 sheet charged throughout with rock- 

 fragments, 692. 

 Madian, 5 ; rocks from, 7. 

 Madras, plant-bearing series of, 523. 

 Magnetite grains, leucite crystals con- 

 taining, 395. 

 Mallet, R., Esq., observations on the 

 Rev. O. Fisher's remarks on Mr. 

 Mallet's theory of volcanic energy, 

 511. 

 Mallet's theory of volcanic energy, 

 Rev. O. Eisher's remarks upon, 

 469. 

 Mammalia found at Windy Knoll, 

 Prof. W. Boyd Dawkins on the, 

 246 ; from fissure in Creswell Crags, 

 683. 

 Mammaliferous drift, Portland, 31. 

 Manitoba, Eastern, drift plateau of, 



609. 

 Map of North-west Lincolnshire, 115 ; 

 of parts of Cambridgeshire, Bed- 

 fordshire, and Buckinghamshire, 

 259; of part of the lake-district, 

 showing the positions of the granitic 

 rocks, 592 ; of part of Lincolnshire, 

 showing the positions of the various 

 clay-pits in the Kimmeridge Clav, 

 202. 

 Maps, contour-, of the southern part of 

 the lake-district, showing the form 

 of the land at various stages of sub- 

 mergence, 155, 156, 157. 

 Market Rasen, Lower Kimmeridge, 



near, 206, 207, 208. 

 Mellanear, near Hayle, el van from, 

 336. 



Mello, Rev. J. M., on some bone-caves 



in Creswell Crags, 679. 

 Menevian rocks on the east side of 

 Porth-y-rhaw Creek, near St. Da- 

 vid's, section through the, 372. 

 Merom, Lake, section through, 12. 

 Mesosuchia, 427. 



Metalliferous deposits, Mr. J. A. Phil- 

 lips on the rocks of the mining-dis- 

 tricts of Cornwall, and their relation 

 to, 319. 

 Metamorphic rocks of the lake-district, 



Mr. J. C. Ward on the, 568. 

 Metamorphism of volcanic ashes of 



Cumberland, 412. 

 Miall, L. C, Esq., on the structure of 



the skull of Bhizodus, 624. 

 Micraster brevistella, 4:47, 448. 

 Microlites, leucite crystals containing, 



395. 

 Microscopic examination of liquid • 



cavities in quartz, 571. 

 Microscopic structure of some ancient 

 and modern volcanic rocks, Mr. J. 

 C. Ward on the, 388 ; of felspars, 

 Mr. F. Rutley on some peculiarities 

 in the, 479. 

 Milne, John, Esq., geological notes on 

 the Sinaitic peninsula and North- 

 western Arabia, 1. 

 Mineral deposits of Cornwall, 339. 

 Mining-districts of Cornwall, Mr. J. 

 A. Phillips on the rocks of the, and 

 their relation to metalliferous de- 

 posits, 319. 

 Minnesota, Northern, drift-plateau of, 



609. 

 Missouri Coteau, view of the, 615. 

 Mokattam Cliffs, near Cairo, Prof. 

 Owen on the fossil evidences of a 

 Sirenian mammal from the Num- 

 mulitic Eocene of the, 100. 

 Moraines in the southern part of the 



lake-district, 157. 

 Mudgee diamond-field, Mr. A. Liver- 



sidge on the, 489. 

 Munger quarry, near Paulton, Middle 



Lias at, 500. 

 Murchisonia bivittata, 546. 



Boylei, 547. 



Hercynia, 547. 



Loganii, 544. 



longispira, 546. 



macrospira, 545. 



— — — tiwritiformis, 545. 



Vitellia, 547. 



, sp., 548. 



Murchisonite beds of the valley of the 

 Ex, Mr. G-. W. Ormerod on the, and 

 an attempt to classify the beds of 

 the Trias thereby, 346. 



