1 1 6 Geological Remarks on the 



answers to an assemblagt- of contiguous* and allied strata, 

 as the genera of plants and animals do to their species. I 

 shall begin with the names of the material places mentioned, 

 and refer to the pages of the Memoir in your Magazine in 

 e^ich instance : adding, occasional remarks of my own, in 

 parentheses. 



Aiitonl, 11 miles SW. by W. of Paris, has plaster quarries 

 at the edge of the gypsous soil; wherein the remains of 

 manimiferai are found, and whose intervening marles 

 are without lenticular gypsum; probably this is the 

 upper or first mass of the quarryman, p. 33. 



Ailinont has sand-pits, pure, without fossils, p. 56, 



Bagueux, (Bogneux by mistake) 4^ miles SSW., has 

 plaster quarries in the first mass, (sec ^/z/owf above). 

 p. 53. 



Beance is a very extensive and high platform of (alluvial) 

 Sand, whose extremities are Courville N W., and Mon- 

 targcs SE., (which should have been described in ar- 

 ticle X. if the memoir had not abruptly terminated) to 

 the westward of Paris, whose very indented north- 

 eastern i^(^^Q', from the Maulde river to Nemours, 

 forms the south-western limits of the district called 

 the Bason or Environs of Paris, which is the subject 

 of this Memoir, p. 38 and 39. 



Boh de Boulogne^ 4-\ miles NW. by \V,, is on a plain co- 

 vered by flint gravel, p. 58. 



Bonglval near Marly, 10 miles W., has chalk-pits, in 

 distinct beds, with few flints : the chalk here has no 

 covering, except in some places (alluvial) marly sand, 

 containmg small and large blocks of calcareous stones 

 of a very fine grain, (perhaps the gray-wethers or 

 cherly blocks of our Wiltshire and other chalk hills)* 

 p. 41 and 43. 



Chmnpagne Province, to the eastward of Paris, Is a very 

 large district of chalk (forming large plains) having 

 isolated patches (or hummocks) of (alluvial) sand upon 

 them. p. 39 and 40. 



Ckampigmjy 8 miles SE. by E., has quarries and lime- kilns ; 



instruct us,, as to the relative ages of particular soils. The formations or 

 »oil8, numerous as they are, which the Werneriaiu describe in the order of 

 their respective ages, according to his theory, are found inapplicable by most 

 correct ol>servers, in districts distant from those on wiiose soils they were 

 originally founded ; and hence the Derbyshire limestone is not found by 

 Mr. W. Martin to accord with the Wernerian Hypothesis, p. 158 : or the 

 gyppums of Paris observed by M. Cuvier and M. Broguiart, with any of 

 M. Werner's Formations, p. 53. 

 ♦ In the order of super-positioo. 



the 



