ANNIVERSARY ADDRESS. 41 



" In the neighbourhood of Mont d'Qr, and at Koe, may be 

 noticed in the midst of immense masses of clay, which accompany 

 the serpentines, numerous veins of Hyaline quartz ; sometimes, 

 as in the locality Latouche-Tere, at Koe, this quartz has in the 

 midst of the clay enormous proportions, and is sometimes covered 

 with green coatings, which again appear to be the silicate of 

 nickel." 



The last two passages are translated literally from the text of 

 Monsieur Gamier, in order to present his own statement so as 

 not to be mistaken. 



Of the Euplwtides, Diorites, and AmpJiiholites, I have no 

 time to speak at length. I may mention, however, that the for- 

 mer are often charged with red iron oxide, seemingly derived 

 from the decomposition of the diallage, in which case there occur 

 masses of clay and impure kaolins, in the midst of which are kid- 

 neys of pyrolusite and nests of oxidulated magnetic iron. 



In the south of Ouen Island these Eiqjhotides pass into a jade, 

 which is sometimes green, changing to a white. In decompo- 

 sition sometimes portions pass to serpentinous schists, whilst the 

 more compact pass to felspar, accompanied there by little Ouva- 

 rovite (i. e. lime-chrome) garnets. 



Diorites are frequent in the midst of the magnesian eruptions, 

 and often pass into Amphibolite, which always occurs in veins in 

 the midst of the serpentines. 



At Koe the diorite is composed of great crystals of hornblende 

 in the midst of the felspar of decomposition, and is coloured green, 

 probably also by the silicate of nickel. 



In the account I have now given of New Caledonia I have 

 followed carefully M. Garnier's statements, and have sometimes 

 introduced a strictly honest translation of his remarks, especially 

 in what he has said of the Chromate of iron and silicate of 

 Nickel, quoting sometimes partly from his paper in the " Bulletin 

 of the Geological Society of Trance," and partly from his larger 

 essay in the Annates des Mines. A few references to his other 

 remarks may be equally satisfactory. "Writing of the iron ore, 



