200 



BULLETIN OF TUE ESSEX INSTITUTE. 



Iron, Speciüar, . 













17 



Iron Stone, Clay, 













29 



Iron, Titanic, 













20 



Jaspelite, 













45 



Jasper, 













45 



Jeftersite, 













124 



Kaolinite, 







\ 







110 



Labradorite, 













9G 



Lead, 













1,6 



Lepedomelane, . 













82 



Lepidolite, 













85 



Leucoxen, 













21 



Lime, Phosphate of, 













129 



Limestone, Massive Granulär, 











133 



Limestone, Magnesian, 











137 



Limestone, Massive Blue, 











134 



Limestone, Silicious, 











136 



Limonite, 











26-29 



Lithia Mica. 











85 



Magnesian Limestone, 











137 



Magnesite, 











139 



Magnetite, 











22 



Malachite, 











142 



Manganese, Bog, 











32 



Manganese, Red Bi-silicate of, 











147 



Marble, Statuary, 











135 



Marcasite, 











12 



Marmolite, 











110 



Massive Blue Limestone, 











134 



Massive Garnet, 











72,74 



Massive Granulär Limestone, 











133 



Massive Serpentine, 











109, 115 



Menaccanite, 











20 



Mica. 









8( 



►, 81, 84, 85 



Mica, Biotite, 











81, 124 



Mica, Lithia, 











85 



Mica, Muscovite, 











84 



Mica, Phlogopite, 











80 



Microcline, 











99 



Microcliiie-Microperthite, 











100 



Microperthite, . 











100, 101 



Milky Quartz, 











39 



Mispickle, 











13 



Molybclenite, 













3 



