36 ANNIVERSARY ADDRESS. 



the above, would lead to the opinion that the shales belong to 

 the lower Jurassic formation." But, says Gamier, Mons. Des- 

 longchamps having found in the Triassic beds of Hugon casts of 

 Astarte and Turho near to those above named, Mons. Fischer 

 thought the formation might be Triassic also. 



Munier-Chalmas recognized four Lower Jiassic shells!, an Odrca 

 probably sublamellosa, of Dunker; a Pcllatia, a genus common 

 in Burgundy, and named Gamieri after Mons. Gamier ; Cardium 

 Caleclonicum, and a Turbo. 



The shales are surmounted by the beds containing the coal, 

 and in the midst of them occur two species of Nucula — one of 

 which {Nacula Hammeri, de Prance) belongs to the Upper Lias. 

 Mons. Gamier says : Professor M'Coy has determined coal 

 beds in New South Wales belonging to Triassic and Jurassic 

 strata, with Belemnites gic/anteus. But this is a mistake ; thatfos_ 

 sil or its representative belongs only to Qneensland. 



At Koe the coal is anthracitic, sometimes graphitic, inter- 

 calated with the shales and resting on a serpentinous sandstone 

 ("gres metaxite"') a vein of which passes through the Anthracite. 

 Small undetermined Bivalves and fragments of plants occur in 

 the shales at the contact with the coal. Monsieur Bongniart 

 recognizes a similar occurrence in the Devonian anthracites of 

 Mayenne. The shales are pyritous, argillaceous, and fusible. 

 Yicomte d'Archiac classes them with the Upper Lias. 



At Karigou the coal has been rendered anthracitic by a vein of 

 Euritic porphyry which has elevated the beds, and prismatized the 

 coal, changing it to a condition of graphite, with calc spar, and 

 numerous crystals of quartz. In the midst of the shale or 

 anthracite there is abundance of phosphate of iron, covering the 

 rocks and coal with a bluish coating. 



To the north-west of Mont d'Or the coal is bituminous and 

 highly inflammable, and occurs in nests rather than in beds of 

 friable sandstone*, rapidly decomposing and only subsisting when 

 in contact with hardening igneous rocks. This coal is very 

 impure and of very little value ; and from its position, flanked by 



