316 Geological Society. 



of horizontal strata of tertiary limestone rest at a considerable height. 

 The Acropolis of Lindo is situated upon beds of it, having an incli- 

 nation of 20° to 25° to the north-west. It occurs likewise further 

 north, between Rhodes and Archangelo, where it forms the high 

 ridge of hills about two miles from the shore, and the low ridge of 

 rocky islets in the middle of the plain, and parallel to the coast. 



Older Hocks. — The only locality at which these are satisfac- 

 torily shown, is half-way between Archangelo and Lindo, and close 

 to the shore at the bottom of a deep bay. At this point the blue 

 limestone, which in its lowest beds is hard and siliceous, and dips 

 between 60° and 70° to the north-west, is underlaid constantly by 

 a hard, black, schistose, crystalline rock, like the limestone of the 

 Bosphorus. 



In conclusion, Mr. Hamilton gives the following general state- 

 ments : 1. The scaglia is more abundant in Rhodes and the south 

 of Asia Minor than further north, and is apparently a prolongation 

 of the scaglia Avhich constitutes the mass of Mount Taurus. Num- 

 mulites have been found in it near Adalia, and Mr. Hamilton ob- 

 tained near Deenair a species resembling one found in the scaglia of 

 the Ionian Islands. 2. Igneous rocks are much more rare towards 

 the south, and do not appear so often associated with the scaglia as 

 with the older limestones. 3. Trachyte and other igneous products 

 almost constantly accompany the blue semi-crystalline limestone, as 

 at Erythrsea and Boodroom. 4. In the absence of organic remains, 

 Mr. Hamilton hesitates to state positively whether the blue lime- 

 stone is an altered rock, or is an older formation which has been 

 raised to the surface ; but he is inclined to adopt the latter opinion, 

 in consequence of the resemblance of the limestone to that near 

 Constantinople, which is associated Avith schists, containing trans- 

 ition fossils. 



A letter from Mr. Ottley, of Exeter, was then read, " On some 

 specimens from the new red sandstone," considered by the writer to 

 be casts of Alcyonia. 



The specimens alluded to in this letter were found by Mr. Par- 

 ker in a quarry about two miles from Exeter, in the road towards 

 Bath. In the lower part of the quarry coarse sandstones and fine 

 conglomerates occur, and in the upper a flat, flaggy sandstone. The 

 beds dip 10° or 12° to the south-east. Interstratitied Avith the con- 

 glomerate is a looser red sandstone, in Avhich the branched concre- 

 tions, considered to be of alcyonic origin by Mr. Ottley, principally 

 occur; but they have been found also in the conglomerates, and the 

 sandstone of the upper part of the quarry. 



A paper Avas afterv\ards read, entitled, " Description of the re- 

 mains of a Bird, Tortoise, and Lacertian Saurian, from the Chalk ;" 

 by Richard Owen, Esq., F.G.S. 



Bird. — The three portions of Ornitholite Avere obtained by Lord 

 Enniskillen from the chalk near Maidstone, and Avere recognised by 

 him and Dr. Buckland as belonging to some large bird. One of 

 the bones is nine inches in length, and has one extremity nearly en- 

 tire, though mutilated, but the other is completely broken oft". The 



