9 



are not so frequently met with as in the under- 

 lying beds. 



The Yellow Sandstone (B) the depth of which 

 is variously estimated at from 20 to 40 feet " consists 

 of yellow sand or sandstone with greenish-black 

 parfcicles intermixed. It abounds in organic remains 

 many of which differ from those of the coral limestone. 

 One of its most characteristic fossils is a small 

 Nummulite which sometimes is in such quantity 

 as to form a third part of the bed to which it 

 belongs. It occurs most abundantly in the cliffs 

 of the Bay of Ramla on the N. W. coast of Gozo." 

 Layers of oysters, the teeth and bones of sharks, 

 and the remains of Cetacea are also met with in 

 this formation which can be easily examined in the 

 cliffs on the N. W. shore of Malta, at Ramla Bay in 

 Gozo, and below Fort Chambray in the same 

 island, and also in the neighbourhood of Citta Vecchia. 



The Blue Clay or Marl (C) from 100 to 120 

 feet in thickness "contains two or three thick layers 

 of a lighter colour than the rest, and imbedded 

 in it are crystals of gypsum and occasionally nodules of 

 sulphur/' The cliffs at Karabba shew to advantage 

 the thickness of the marl, which is strongly impregnat- 

 ed with lime, and contain a few organic remains. 

 The bones of whales, sharks' teeth, teeth and spines 

 of rays and other species of fishes are not uncommon. 

 "The Testacea are chiefly species of Mitra etc. 

 A Nautilus is found, but rarely, under Fort Chambray. 



