Environs of Nice, and the Coast thence to Vintimiglia. 179 



4. Brown, siliceous sandstone. 



5. Grey marl. 



6. Compact, brown, micaceous sandstone. 



7. Compact or schistose, siliceous, and micaceous sandstone. 



Lignite is observable in these beds near Vintimiglia. 



Grey -Blue Limestone ivith Nummulites. 



This formation occurs near Cap de la Mortola, where there is the follow- 

 ing section. 



1 . Grey-blue limestone, with Nummulites ; it forms a thick bed near the village of La Mortola, 



and occurs beneath the micaceous, brown sandstones above noticed. 



2. Grey marl and micaceous sandstone, containing lignite. 



3. Grey, marly limestone, containing Nummulites and Gryphites or Ostrea. 



4. Dark. coloured limestone, containing white shells and corals. 



5. Thick, grey-blue limestone bed, full of large-bombed Nummulites. 



6. White marl. 



7. Grey, marly, and arenaceous strata. 



8. Compact, light-coloured limestone of Pont St. Louis. 



Let it not be supposed that the presence or abundance of Nummuhtes dis- 

 proves the opinion I have given^ that this series of rocks corresponds with the 

 green-sand of England. In England, indeed, Nummulites are rare in that 

 formation; but M. Elie de Beaumont* met with them in the green-sand of 

 Martigues (Bouches du Rhone) in company with Gryphites, Hippurites, and 

 Terebratulae. He addsf, " Je citerai aussi une Cucullee (CucuUcea carinata) 

 dont j'ai retrouve I'analogue dans des couches qui se rapportent incontestable- 

 ment a la formation du gres ferrugineux et du gres vert a Saint lis, pres Cas- 

 tellane (Basses Alpes), aux Granges de Bellevuc, pres Uchaux (Vaucluse), a 

 Brousseval, pres Vassy (Haute Marne), et a la cote de S**" Catherine, pres 

 Rouen : un Trochus, ou Pleurotomaire, et une Melanie ou Phasianelle dont 

 les analogues existent dans le gres vert en Angleterre et en Normandie, et un 

 Puseau que M. Desnoyers croit tres voisin de I'un de ceux que M. Miller a 

 trouve dans le Green-sand des Black Down Hills +." 



Nummulites are intimately mixed with Gryphites, in the rock to be next 

 noticed, at Bausi Raussi and Beaulieu Bays. This connection is important, 

 as it shows that the rocks No. 1. and No. 2. above enumerated, and those 

 which follow, do not belong to different systems. At the bottom of Beaulieu 



* M. Bronguiart, M. Cordier, and M. Elie de Beaumont, who had examined the South of 

 France before I went there, obligingly communicated the information they possessed respecting 

 it on my return through Paris. 



-j- Mem. dc la Soc. Linneetine de Normandie, vol. iii. p. 141. J p. 142. 



2a2 



