INDEX. 



493 



Lazarus, St. Mount, volcano, 269. 

 Lelantus, in Euboea, eruption at, 



225. 

 Lemnos, destruction of the moun 



tain Mosychlos in, 349. 

 Letronne on earthquakes in Egypt? 



177. 



Leucite, 466, 476. 

 Limari, volcano of, 288. 

 Linschoten, notices the volcanoes 



of Japan, 375. 

 Lipara, the volcano, question of 



its identity, 256. 

 Lipari, the ancient Meligunis, 256; 



lava stream found in, 341. 

 Llandeilo strata, volcanic frag- 

 ments found in the, 350. 

 Llanquihue, volcano of, 290. 

 Log, ship's, introduction of the, 



an important era in navigation, 



56. 

 Lombok, volcano on the isle of, 



331. 



Lucia, St., the volcano of, 422. 

 Lunar-diurnal magnetic variation, 



viii. 

 Liitke, Admiral, on the volcanoes 



of Kamtschatka, 363. 

 Luzon, active volcano in, 243. 



Maars, in Germany, 231 , in Au- 

 vergne, 238. 



Macas. See Sangay. 



McLaughlin, Mount, its height, 

 417. 



Madagascar, volcanic indications 

 in, 384. 



Madeira, volcanic phenomena of, 

 352. 



Magnet, attraction, but not pola- 

 rity of the, known to the Greeks 

 and Romans, 50; variations of 

 the, early known to the Chinese, 

 52 ; variation charts, 54 ; horary 

 periodical alterations, 60. 



Magnetic disturbances, table of, 

 134. 



Magnetic equator, its position and 

 change of form, 103 ; Hum- 

 boldt'a determinations, 1-J4 ; 



Puperrey's observations, 104; 

 Elliot's, 105. 



Magnetic intensity, 61 ; the know- 

 ledge of, due to Borda, 61 ; in- 

 clination chart, 61. 



Magnetic needle, early known to 

 the Chinese, 50 ; its introduction 

 to Europe, 52 ; decimation, 54. 



Magnetic observatories, 62. 



Magnetic storms, 134. 



Magnetic waggon, the, of the 

 Chinese, 51. 



Magnetism, early researches in, 

 55, 57 ; increased activity of 

 observation in the 1 9th century, 

 62 ; table of magnetic investi- 

 gations, 63; influence of the 

 moon, viii. 



Magnetism of mountain masses, 

 159. 



Makerstoun, Sir Thomas Bris- 

 bane's observatory at, 123, 124. 



Malpais, a term applied to lava 

 fields, 307. 



Mandeira, the volcano, 273. 



Mantschurei, extinct volcano in, 

 437. 



Marco Polo, date of his travels, 53 ; 

 the mariner's compass known in 

 Europe before his time, 53. 



Marcou, on the anthills in the 

 Eocky Mountains, 475. 



Maribios, los, a line of six vol- 

 canoes, 274. 



Mariner's compass known in Eu- 

 rope in the 12th century, 53; 

 English ships guided by it, in 

 1345, 56. 



Marion's Island, traces of former 

 volcanic action on, 387. 



Martinique, recent volcanic action 

 in the island of, 423. 



Masaya, volcano of, described, 

 258 ; descent into the crater of, 

 260. 



Mauna-Roa, a volcano of the Sand- 

 wich Islands, 250; its height 

 greatly exaggerated, 250; mean- 

 ing of the name, 245; described, 

 391; the largest volcano of tha 



