XC PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



in Central Bosnia, as well as in the south of Montenegro, in Mace- 

 donia, and in other places. He thinks it was a mistake to class these 

 rocks with the Cretaceous system, on account of their close resem- 

 blance to the dolomites of the Tyrol and of the Eastern Alps. He is 

 inclined to adopt the view of M. Eichtofer, that the dolomites are 

 the remains of coral-reefs partly denuded and considerably mine- 

 ralized. 



6. The Neocomian system appears to be very abundant in Turkey 

 particularly in the Balkan, Upper Eastern Macedonia, Western Dar- 

 dania, and in Servia, probably also in Bosnia. It is very fossili- 

 ferous. 



7. The Cretaceous formation with Orhitolites traverses the whole 

 of Bulgaria a short distance to the north of the Balkan. It also oc- 

 curs in the centre of Servia, with many fossils. 



8. The Gosau formation is found occasionally in Turkey, parti- 

 cularly in Eastern Servia and in Bosnia, characterized by Tomatella 

 gigantea. Limestones with Nerincea are also found in Upper Al- 

 bania. 



9. The Cretaceous system with JRudistes occurs in considerable 

 masses throughout Western Turkey and in Macedonia, as well as in 

 Servia. It is marked by bands of fossils on several plateaux of the 

 limestone-mountains of Bosnia, Upper Albania, and Mount Pindus, 

 as well as in the south-west of Macedonia. 



10. The Chalk-marl with Belemnites has only been observed in 

 Western Bulgaria. 



11. The Eocene arenaceous beds of the Carpathians and Vienna, or 

 the Tertiary flysch, is weU developed in Central Servia, Western Bul- 

 garia, Epirus, and Southern Albania along the coast. 



12. The Nummulitic system occurs in parts of Albania towards 

 Epirus, in the west of Thessaly, Southern Albania, and in the Her- 

 zegovina, as well as in the neighbourhood of Yarna, in Bulgaria, and 

 in Eastern Thrace. 



13. The Miocene formation, or rather the Neogene of Vienna, is 

 found with its clays and fossiliferous limestones in the great Servian 

 valleys, in the basins of the Msh and Upper Drin, and in numerous 

 other basins throughout the country. 



14. Erratic blocks are doubtful. 



15. The author also mentions several places where the Eocene beds 

 have been pierced by serpentines, diorites, and metalliferous por- 

 phyries. 



In the ' Smithsonian Contributions to Knowledge ' for 1865 wiU be 

 found an interesting work by Dr. Leidy on the Cretaceous Reptiles of 

 North America. The author had originally intended to include an 

 account of the fossil fishes, and thus to form a monograph of the ex- 

 tinct vertebrata of the Cretaceous period ; but this he found was 

 impracticable at present. No other vertebrata, birds or mammals, have 

 been found in the Cretaceous deposits of any part of America. Most 

 of the fossil remains described in his memoir were obtained in New 

 Jersey ; many were found in the Greensand, which is largely exca- 

 vated for agricultural purposes, and others were obtained from lime- 



