8 
the Sudbury district, samples of which assay as high as from loper 
cent, to 35 per cent, nickel. Around the large specimen, described 
above, is another important ore of nickel, Gamierite, consisting 
essentially of a hydrated silicate of magnesium and nickel, occur- 
ing in the veins traversing the serpentine rock near Noumea, 
capital of New Caledonia. 
Object P. Limonite (brown oxide of iron), from Russia. 
Object Q. Zinc-lead ore, France. 
Object K. A tall pyramid of oxidized iron ore, from 
Greece, and numerous other specimens from different foreign and 
American localities at the base. 
Object 8. Hematite (red oxide of iron), Wyoming. 
Object T. Copper ore (bomite), Cape Colony, South Africa. 
Object U. Large mass of Calamine (zinc silicate), Arkan- 
sas. The weight of this mass is about io,ooo pounds. 
