General Index. 



Magnetic Oxide of, iron, . . 296, 347, 359, 363, 399 



Made, . . . . . 291 



Maiden, vein of iron ore in, . . 55 



Mamillary argillaceous iron ore, . . 190 



Mammalia, Catalogue of, in Mass. . . . 544 



Manganese Oxide and Bisilicate of, . . 361 



in Plainfield, . . 63 



in Conway, .64 



in Hinsdale, N. H. . . . 64 



in Winchester, N. H. . . .64 



earthy oxide of, how produced, . 123 



oxide of in mica slate, . . 344 



Map Geological of Mass, how constructed, . 2, 113 



Marble of Berkshire, . . . P 28 



Marl, ... . 38 



how produced, . 120 



Market House, Boston, its granite, . . .16 



Martha's Vineyard, iron ore in, * . > . . 57 



scenery of, . ... . . 98 



Mather Cotton ore fossil bones, . . .205 



Meridional System of Strata, the Oldest, . . 525 



the Largest, . . 530 



Metals and their Ores in Mass. [ . 51 



Metallic Veins and beds their origin, . . 520 



Mica Slate its agricultural character, . . 11 



its economical uses, . 23 



its mineralogical characters, . . 326 



staurotidiferous, amphibolic, garnetiferous and spang. 327 



argillo micaceous and arenaceous, . 328 



anthracitous, plumbaginous, and conglomerated, 329 



indurated, .... 330 



its topography, . . 331 



of Worcester Valley, . . .333 



dip, direction, &c. of its strata, . . 337 



contortions in, ... 338 



reins of segregation in, . . 341 



its mineral contents, . . . 342 



its theory, . . . . 349 



Mica, crystalized, prismatic and plumose, . . 504 



Micaceous Oxide of Iron, . . ... 359,433 



Mineral Rods, . . ... t , .68 



Waters, . . .49 



Miscellaneous Items, .... 520 



Molybdenum Sulphuret of, . . . 397 



Monomoy Beach its gain upon the sea, . . 128 



Monument Mountain, . . t .77 



Hill, Quincy, . . .85 



Mosaic Chronology, how reconciled with geology, . 165 



Moshop, Indian Giant, . . . 204, 205 



Mounds in the Western States, not artificial, . 168 



Mount Hope Bay, . . . "*. " 94 



N. 



Nahant, . . . . 95 



Nantasket Beach, . . . -..._. 96 



Nantucket iron ore in, .. ; .57 



its scenery, . . .98 



Narraganset Bay its scenery, 94 



