41 AXNIYEItSAItY ADDRESS. 



The proportion of 61*333 per 100 lie shows io be the greatest 

 in the works which give the analyses of chromates of iron from 

 l'Aveyron, Styria, the Ural, Silesia, St. Domingo, and Baltimore. 



Of the nickel ore he says the cavities of the rock on the river 

 Dumbea are filled with magnesian silicates, impregnated with a 

 green nickeliferous substance which colours them, and which up 

 to his time was taken for a certain condition of chrome which is 

 common in the quartz itself; Mons. Jannettaz stated the true 

 nature of this colouring. 



The Nickel, he remarks, is met with under the same conditions 

 accompanying blackish serpentines with nodules of green matter; 

 at Kanala nickel shows itself again colouring -strongly a mag- 

 nesian silicate. I believe it is now being wrought at that place. 



Then he concludes : — "It will be highly interesting to study 

 more completely the deposits of nickel in New Caledonia, and to 

 see if industry could not draw from it a part of the metal, the 

 price of which, as we know, is so high, and the employment of 

 which in certain cases offers so many advantages. At first, in 

 consequence of the intimate mixture of the nickel with the 

 magnesian silicates, one might say that the treatment of the 

 metal on the large scale would more easily succeed by the moist 

 way." 



At the close of his Memoir in the Annates des Mines, he says : 

 We have seen in the north metalliferous sands ; in the south, in 

 the midst of rivulets and their banks in contact with serpen- 

 tinous rocks, there is also a great abundance of metalliferous 

 sands essentially composed of chromate of iron, ordinarily in 

 little crystals — oxidulated iron, &c. I will state, in addition to 

 my friend's remark, that it has been ascertained that Serpentine 

 generally contains just such crystals, wherever it has been 

 analyzed. 



As a fitting appendage to the preceding abstract, I consider it 

 right to read the last document of Monsieur Gamier, which I 

 have translated from the French Official journal, the Moniteur de 

 la Nouvelle Caledonie, of 6th January, 1875, where it appears 



