NDEX. 



741 



Longbird Island, Bermudas, notice of, 107. 

 Lonsdale, Mr., on the supposed scarcity of the 

 upper valves of Crania, 251 note. 



notices of his placing the Devonshire 



limestones between the carboniferous and Si- 

 lurian systems, 690, 696, 



list of Devonshire corals by, 697. 



Looe, description of strata near, 665. 

 Lower culm measures of Devonshire, described, 

 670. 



contain 



the wavellite, 671. 

 ■ greatly al- 

 tered near granite, 672. 

 description of the lower divi- 

 sion, 670. 



roofing-slates, 672 note. 



yields bad 



. deposited 



anterior to the protrusion of the granite of 

 Dartmoor, 672. 



'. — • — description of the upper divi- 



sion, 67i 



composed of black shale 



and beds of black limestone, 678. 



• ■ contains Goniatites, 673. 



no fossils resem- 



bling those of groups inferior to the culm 

 series, 673. 

 the southern calcareous 



bands thicker than the northern, 674. 

 section of, north of Tavi- 



stock, 676 note. 

 Lower oolitic carboniferous series, characters of, 



on the coast of Yorkshire, 229. 



— fossils of, 230. 



Lower Silurian rocks, notice of, in Coalbrook 



Dale, 418. 

 Low-water beaches, description of raised, 284. 

 Luckput, description of the nummulitic limestone 



on which the town of, stands, 300. 

 Ludlowrocks, accountof, in Coalbrook Dale, 422. 

 Lurgeiden Mountain, structure of, 76, 78, 79, 80. 

 Lydian stone, south of Ireland, notice of, 7. 

 Lydney Park, description of a fault between, and 



Denbigh Lodge, 204. 



Lyell, Charles, Esq., on the cretaceous and ter- 

 tiary strata in Seeland and Moen, 243. 



phaenomena of earthquakes and vol- 

 canic eruptions at all epochs, account of, by, 

 quoted, 624 and note. 



■ — remark of, explanatory of the rare 



occurrence of fossil birds' bones, 175. 



Lynmouth, on the geological structure of the 

 vicinity of, 639. 



description of the formations in the 



neighbourhood of, 644 and note. 



Lyne, gorge of, a valley of elevation, 640. 



valley of, exhibits the lowest strata of the 



country, 641, 644 and note. 



~ . structure of, 644. 



M. 



Maclauchlan, H., Esq., notes to accompany a geo- 

 logical map of the Forest of Dean coal-field, 

 195. 



Mac-Gillicuddy's Reeks, list of the highest points, 

 4. 



MacrourousDecapodsjnotice of some remains of, 

 173. 



account of fossil Branchiae 



of, 173. 



Madeley, diagrams of faults in the parish of, 453. 



Maestricht, notice respecting the resemblance of 

 the beds of, with those at Stevensklint, 252. 



Magnesian conglomerate, description of three 

 fossil Saurians from, 349. 



Magnetic iron ore, abounds on the north shore 

 of the St. Lawrence, 91. 



. affected the compasses used 



in surveying, 92. 



' does not affect the needles of 



vessels sailing up the St. Lawrence, 92. 

 • affected the needle of the Gul- 



nare, when one and a half mile off Port Neuf, 

 92. 

 — variation, notice of, at the entrance of 



Kenmare River, in 1756, 4 note. 



at Ross Island, 



lower Lake of Killarney, 1829, 4 note. 



