AGE OF THE TERTI ARIES. 179 



forms the wall of a marine newer pliocene forma- 

 tion. They must then be of an epoch inter- 

 mediate between the period of deposition of the 

 Touraine and Bourdeaux miocene beds — which, 

 we have seen, was probably the epoch of the 

 Lycian marine tertiary, — and that of the Rhodian 

 and Sicilian beds, referred to the newer pliocene 

 sera. Consequently they are newer than the fresh- 

 water tertiaries of the gulf of Smyrna, which 

 have been determined to be of the eocene period ; 

 they are probably synchronic with the sub- 

 appennine beds or older pliocene. The discovery 

 of the true locality in Italy of the Limneus ade- 

 lina will go far to show the correctness of this 

 conjecture. 



Rocks of igneous origin are not unfrequent 

 in Lycia, and their presence is evidently con- 

 nected with the disturbed state of the mountain 

 masses. Around the gulf of Macri, the ancient 

 Glaucus Sinus, hills of schistose serpentine abound, 

 rising up amidst the scaglia, which, in many 

 places, is seen to rest distinctly upon the igneous 

 rock. The limestone does not appear in the 

 least altered at the point of contact. The ser- 

 pentine hills are of rounded outlines, and at a 

 distance are easily distinguished from the neigh- 



