60 TANGIER I ALGERIA 



species, were found at a height of about 400 feet 

 above the present level of the Mediterranean. This 

 shows at all events that, at the time the higher of 

 these beaches were formed, the depression was such 

 as must have led to the inroad of the sea to a con- 

 siderable distance inland, but how far we cannot say. 

 In any case the difference of level is such that a 

 very broad belt of the coast line must have been 

 covered by the sea, 1 at the same time that the 

 Strait of Gibraltar must have been materially 

 widened, and its depth diminished. 



At Tangier there is a well defined Raised Beach 2 

 about forty feet high, in which there was found a tooth 

 of Elephas antiquus. Near Tetuan there are some 

 large ' fissures, the breccia in which contains both 

 animal remains and land shells chiefly Helices. 



Algeria. At Oran 3 there is a Raised Beach about 

 twenty feet above the sea level, with abundance of 

 shells,mostly of species still living in the Mediterranean, 

 and above this there is a breccia of angular frag- 

 ments of slate and limestone, so that we have here 

 an exact counterpart of the Raised Beaches and Head 

 of the channel. The limestone rocks are likewise 

 traversed by large fissures filled with a breccia, con- 

 taining bones of Sear, Ox, Horse, Deer, &c. It is said 

 to present precisely the same characters as the ossifer- 



1 This was anterior to the time of the Bubble-drift. 



2 Maw, Geol. Mag., vol. vii,, p. 548 ; "Ramsay and Geikie, Quart. 

 Jour. Geo. Soc., vol. xxxiv., p. 514. 



8 Bull, Soc. Geol. de France, 2nd Ser., vol. xi., p. 505 ; Desnoyers 

 in Ch. D'Arbigny's Dictionnaire d'ffistoire Nalurelle, vol. vi., 

 p. 383. 



