Vol. 57.] PHYSrCAL DEVELOPMENT OF GUADELOUPE. 515 



appearance of that of tl.e Lower Petit-Bourg Series. The extreme 

 elevation of the gravels on both sides of the island may he some- 

 what greater than that of the exposures visited, and if there are 

 higher sections observable, I should expect them to occur near the 

 seacoast in the vicinity of Trois Hivieres. On tho eastern flanks of 

 the mountain-country they are apt to be concealed by the creep 

 and washes of the soils. 



IX. Other CiLCAEEors Feagments in Guadeloupe propee. 



Payen^ mentioned the occurrence at Yieux Port, near Basse 

 Terre, of two beds of limestone : one at an altitude of 330 feet 

 above the sea, resting horizontally on a volcanic foundatioji, the 

 other at an elevation of 130 feet. Deshayes found that the fossils 

 contained in them belonged to living species of shells and echino- 

 derms, and concluded that the beds were Quaternary. Duchassaing 

 also mentions the occurrence of limestones near Trois Bivieres."^ 

 I was in both of these neighbourhoods, but not having seen the 

 original papers at that time, mentioning the localities, I could 

 learn nothing of them from enquiries made of most likely persons, 

 as but little interest or observation was manifested in the scientific 

 features of the island. The calcareous beds described near Basse 

 Terre seem to be reproduced in Dominica, and these I have 

 studied. 



X. Remains op Elefsas. 



In the Library & Museum Building at Pointe a Pitre, JVf. Louis 

 Guesde kindly showed me the tooth of a small species of ElepJias, 

 which had been found in Grande Terre. It was 6 inches long, 

 and upon the serrated crown it measured 5 by 2 inches. It 

 appears to be something like the small Maltese type, and its occur- 

 rence has an important bearing on the question of the elevation of 

 the Windward Island chain. 



XI. Eeosion-Peatuees. 



The erosion-features of Grande Terre are characterized by 

 undulations, where the rounded hills rise from 50 to 100 feet above 

 the broad depressions separating them. As we have seen, the 

 foundations of the country are carved out of the earlier Tertiary 

 Limestones, except on the isthmus between the two parts of 

 Guadeloupe and the adjacent district, where they have been 

 washed away, so as to expose the underlying tuffs. The peneplain, 

 to which the surface of Grande Terre and of a part of the main island 

 was reduced, extended broadly beneath the now shallow bays north 



^ Bull. Soc. Geol. France, ser. 2, vol. xx (1863) p. 475. 

 2 Ibid. vol. iv (1847) p. 1097. 



