Stratification of Prance and England. 12 J 



Nanterre^ 71 miles NW^., has a plain covered by flint- 

 gravel, p. 58. 



Nemours, 32 miles SSE., is at the limits r)f the basin of 

 Paris, and at the SE. ead oF the (alluvial) san<ls of 

 Beaiwe, which form its crooked boundary iheucc NW, 

 to tlie mouth oF the Maiddt river, p. 59. 



^/ewiV/y, 4y miles NVV., has quarries oF stone, in whicb 

 arc found crystals of quartz and rhf)inboidal crystals 

 of variegated carbonate of Iniie, but no fossil 4*emains, 

 p. 48. 



Owi/i Mountain, near Gisors, NW., has (alluvial) pudding- 

 stone of coarse grains of (piartz and shells, p. 48. 



Pulaiseau , has strata of freestone, without sheHs, 



alternating with sand, which is sometimes washed out 

 or displaced, and the blocks of stone are left in con- 

 fusion, p. 5f). 



Pallery, near Chaumont, has in its lower str/.la of coarse 

 Jiuiestone and sand, the thirteen kinds oT fossil leniains 

 that are found at GentlUy. p. 4 7. 



Paris Environs has had its stratification and extrancoui; 

 fossils treated of by M. Desniarets, M. Gillet-Lau- 

 mont, M. Lamarck, M. Coupe, and fvl. Cuvier. About' 

 the beginning of 1805, M. Cuvier and M. Broizniart 

 commenced a Mineralogijal Map of that district 

 around Paris, deni^minated l)y them ihe Bas-iri of' Pa- 

 risy in which the chalk in horizontal beds with flints, 

 (being ihe lowest stratum there known) is wholly or 

 in part covered by certain argillaceous, siliceous, cal- 

 careous, gypseous- and alluvial strata ; the nature, con- 

 tents and relative situations and thicknesses of which, 

 it is the object of their present labours to iswestigaic 

 and explain. This basin, measuring directly from fC^- 

 pernay to Gisors, nearly from cast to west, is 87 English 

 niilcs long, and from Nemo/irs to th.e neighbourhood 

 of Noyon (to which it must extend to form the reen • 

 tering angle that is mentioned p. 3Q), nearly soutb 

 and north, it is 70 miles broad. 'I'his noble and ex^ 

 tensive field for geological investigation, has on ali 

 sides natural limits, which seem verv crooked and in- 

 idented, as might be expected : on the SVV. from near 

 Nemours to the mouth of the Mauldc river (a direct 

 distance of about 45 miles), it is limited by a cover- 

 ing strat'jni of Heauce sand (which I suppose frou) its 

 description to be alluviuin), and on all its remaining 



sides 



