72 PHYSIOGRAPHY. 



Native Mercury Native Palladium. 



Sectile. Thin laminse flexible. Hardness = rO... 1*5. 

 Sp. gr. =2*350, the variety from Unst. 



1. Before the blow-pipe, it loses its transparency and weight, and be- 

 comes friable. In acids, it is dissolved with effervescence. 

 2. Analysis. 



By BRUCE. By FYFE. 



Magnesia . . . 70-00 . . . 69-75 



Water . . . 30-00 . . . 30-25 



S. It occurs at Swinaness, one of the Shetland Islands, in small seams, 



in serpentine; but more abundantly^ at Hoboken, (N. J.) opposite New 



York city; the veins at this place are sometimes one inch in thickness. 



NATIVE MERCURY. Mercury M el ac one- 

 Metal. 



Amorphous. Liquid. 

 Lustre metallic. Color tin-white. 

 Hardness = 0-0. Sp. gr. = 13-581. HAUY. 



1.' Fluid mercury is the pure metal, as produced by nature. It is en- 

 tirely volatile before the blow-pipe, and easily soluble in nitric acid. 



2. Like Native Amalgam, it occurs with Cinnabar in the, shape of 

 mall globules or drops, and sometimes in narrow fissures of those rocks 

 which contain the Cinnabar. 



3. The most important and well known localities of Native Mercury, 

 are Idria in Carniola, and Alroaden in Spain. In smaller quantities, it i? 

 found at Wolfstein and Morsfeld in the Palatinate, also in some places in 

 Carinthia, in Hungary, in Peru, and other countries. 



4. The quantity of Mercury found native is too small, to allow of its 

 being applied to any useful purpose. 



NATIVE PALLADIUM. Palladium S c 1 e r o n e- 

 Metal. 



Primary form. Regular octahedron. 



Grains. 



Lustre metallic. Color steel-grey, inclining to silver 

 white. 



