Vol. 57.] PHYSICAL DEVELOPMENT OP GTJADELOTJPE. 513 



species, which are all recent. It was in this district that the beds 

 containing human remains were found. These are consolidated 

 calcareous sands, to which Duchassaing gave the name of the 

 Galihis or Anthropolite formation, and which he considered 

 as contemporary with the coral-reefs now raised a few feet above 

 the sea.^ 



The alluvium was described by Moreau de Jonnes. Duchassaing 

 says that it contained Succinea cucitUata, then very rare among the 

 living forms. Neither these nor the thin layers of unfossiliferous 

 clays beneath, mentioned by Duchassaing, were studied by me in 

 Grande Terre. 



YIII. The Petit-Botjrg Series. 



Along the eastern coast of Guadeloupe proper, from near Capis- 

 terre to beyond the isthmus, I have seen recurring deposits ol 

 loams and gravels. One of the best exposed sections occurs at 

 Petit Bourg, where the cliffs rise from the seashore to a height of 

 40 or 50 feet. At the bluff north of the village, sandy tuffs, like 

 that near Trois Rivieres, form the base. Upon its eroded surface 

 lies a deposit of coarse, well-rounded, water worn gravel, which, 

 where not denuded, has a thickness of 10 feet or a little more ; but 

 its surface is greatly eroded, so that at the southern end of the 

 section it is entirely wanting. Succeeding the underlying beds 

 Tin conformably, whether gravel or tuff, is an upper loam, indis- 

 tinctly laminated, except where it contains lines of pebbles. The 

 more restricted exposure east of the village consists of about 10 

 feet of the upper loams, resting upon 10 feet of the coarse gravels 

 (containing occasional volcanic bombs 12 inches in diameter), 

 beneath which comes another unconformable bed of red loam, 

 exposed to a depth of 20 feet. 



The country between Petit Bourg and the Salt River is character- 

 ized by the remains of a base-level of erosion or peneplain, with the 

 rounded hills rising from 50 to 100 feet above the sea. These 

 consist of red loams and waterworn gravels, or where they have 

 been washed away to a sufficient depth, the more ancient residual 

 clays may form the surface. In some of the more massive hills 

 and deeper cuts are large deposits of rounded gravel, resting upon 

 the weatherworn surfaces of loams or in other pla:ces of tuff. 

 These gravels contain volcanic bombs and angular fragments, 

 evidently the product of some volcanic eruption, during which the 

 ejectamenta were thrown into the sea in which the gravels were being 

 deposited. These hills, composed of loams and gravels, are the 

 continuation of the deposit at Petit Bourg, but the intervening 



^ Duchassaing thought that the human remains found (on the estate, at that 

 time, of MM, Morrel), near Moule, belonged to a race antecedent to the Caribs. 

 The word Gralibis was taken from the old Carib name for the island, Bull. 

 Soc. Geol. France, ser. 2, vol, iv (1847) p. 1096, 



