OF THE PARIS BASIN. 



Fig. 8. — General Section at Auvers. 

 f Lmver Sables Moyens : Horizon of Auvers.) 

 Vegfetable earth. 



ft, 



'Sands of variable character, hori- 

 zon tal or false-bedded, buff, grey 

 or ferruginous. Very fossilifer- 

 ous. Sycutn bulbiforme, A Tnpullina 

 parisiensis , Cerithium mutabilt. 

 Ccrbula galiica ; many corab, 

 pebbles, &c. . . 15 ft. to 17 



3 Buff coloured sandstone, 

 a ^\'hite sand — fossiliferous . 



'-7 . - 



rPale purple-grey sandstone, with 

 I some pebbles and in part with 

 1 - fossils similar to the above, the 

 I latter adhering to the bedding- 

 V planes ; (exposed) . 



Base not seen. 



sulcata, Meretrix elegans, Bayania hordacea, Cerithium mixium 



and Olivella Branderi ; corals, such as Madrepora Solanderi, 



Lobopsammia cariosa and Litharaa Deshayesi, are also ver}' 



abundant. 



Middle Sables Moyens (Horizon of Beauchamp). — The middle 



portion of the Sables Moyens is divided into two series, as before 



indicated — the lower of sand and sandstone, the upper chiefly 



