APPENDIX; 
Containing some account of the Chalk Cliffs 3 8$c. on the Coast of 
France > opposite to Dover. 
appearance of a darkish line, extending with a gentle dip 
Blanc Nez on the coast of France opposite to Dover, induced the 
suspicion that it might be owing to the existence of a bed having 
some analogy to one of those in the neighbourhood of Dover, 
which have been described as consisting chiefly of organic remains. 
Another and a darker line, the nature of which Was not at- -first 
suspected, w r as afterwards observed by my friend S. Woods, Esq. 
Member of the Society, by the assistance of a glass. These cir- 
cumstances, together with some anxiety to ascertain whether the 
chalk of the opposite shore possesses the characteristic appearances 
of that in the neighbourhood of Dover, determined me to visit 
and examine it with attention. 
Between Calais and Sangate, a village five miles on the south-west, 
the boundary of the sea consists of a range of low banks of white 
sand. At the western termination of the latter place, the cliff 
begins to rise, and assumes a new character ; consisting for a con- 
siderable distance of fragments of chalk-flint, and rounded masses 
of sandstone similar to those found in the alluvium covering 
towards the east, along the middle of the chalk cliff forming Cape 
