'V2 ANNIVERSARY ADDRESS: 



Trias ; Upper— Characterized by ILilolia Lomclli ; Lower — 



characterized by Avicula riclimondiana. 

 Upper Devonian and Upper Silurian — Characterized by OrtJtia. 

 Azoic — Characterized by Micascliist. 



Granite is very rare, but it occurs in watcrworn pebbles, with 

 quartz rolled, crystallised, pyritous, and rich in Molybdenite, with 

 a little Gold, in the river St. Louis. Schistose Protogine occurs 

 there also in the same way. 



Crystallised schists, mostly micaschists, appear on the east 

 coast, a little north of Hienguene, forming a mountain chain 

 close to the sea, disappearing at the mouth of the Diahot and 

 re-appearing in the mountainous islets of Pam and Bulabio. Its 

 course is rather more than 6 miles, and its highest point not 

 quite 4,000 feet (English) above the sea, at Mount Douit, between 

 Panie and Poebo. The next summit at Poebo is about 2,S00 

 feet, thence falling rapidly towards Balade, where the height is a 

 little above 1,000 feet, and in the two islets about from GOO to 

 700 feet. The latter appears to be the height of the patches of 

 micaschists in the south of the island. In certain places these 

 schists are cut by veins of eupliotlde ; the quartz veins and reefs 

 contain Pyrites, Epidote, fibrous Tourmaline, and Eutile, and arc 

 also the gangue of small quantities of alluvial gold. The strike 

 of the schists is N.X.W. Great reefs accompany the minerals 

 and immense veins highly crystalline, essentially composed of 

 green massive hornblende, garnet, and clhromo-green mica, inter- 

 polate the laminao. At Balade the ro^^become steaschists. 

 Immediately above these michaschists on \Sb cast coast come in 

 bluish fusible slates. Associated with thesf^ve find serpentinous 

 and argillaceous schists, which compose the remainder of a great 

 proportion of the rocky skeleton of New Caledonia, They form 

 great reefs in association with magnesian eruptions in compo- 

 sition and aspect resembling Serpentine. Over these, white 

 magnesian schists occur which appear to have resisted the in- 

 fluence of the serpentines to a great degree or to have been less 

 troubled by them. 



