DIAKTS Akb HOMIKS. 



31 



Lias M'lth Ammonites, noticed in No. 16. I translate Prof. 

 Lory's description of these from Bulletin de la Societe 

 Oeologique de France 1862. "The nunimulite grits f«rm a 

 wild range, whose aspect is altogether peculiar. Of this the 

 principal summits are, on the south of the valley of Mauriennne, 

 the Aiguilles d'Arves, 11, .37;') feet (3500 metres), the peaks of 

 Goleou 11,144 feet, and of the Trois Eveches 10,140 feet. 

 On the north the summits of the Grand Coin and the peak of 

 Cheval Noir 9,201 feet (2830 metres), with whi' h this nunv 

 mulitiquo band terminates abruptly between Saint Jean de 

 iJelleville and the hill of the Madeleine." 



At L. Exposition Universelle de Paris 1867, the special 

 building in the Champ de Mars which contained the exhiluts 

 of the Compagnie Universelle de Canal Maritime de Suez was 

 daily crowded with visitors. The extensive display, Geologi-^ 

 cal and Palseentological, was to me peculiarly interesting. The 

 chief collection included the following : 1. Nummulites and 

 nummulitic limestone from the summit rocks and ditt'cient 

 parts of the chain Mokattam. 2. Nummulitic limestone with 

 large nummulites from the mountains on the right side of the 

 Nile, opposite Minieh. The Mokattam mountains begin near 

 Cairo and extend to about 20 miles from the Isthmus of Suez. 

 They attain to an elevation of about 800 feet above the Nile, 

 The town of Minieh is about 190 miles south of Cairo. 



Messrs. Bauerraan and C. le Nevo Foster in their Geological 

 Reconnaissance made in Arabia Petrea in the spring of 1868 

 (Quarterly Journal of Geological Society) gives us the elevation 

 of Mokattam and a section of a Quarry at the back of the tombs 

 of the Caliphs behind Old (Jairo, in which is *' A bluish gray 

 limestone with Nautili and large nummulites ; this is 48 feet 

 thick." This association of Nautili and nummulites reminds 

 of the Calcaire grossier infcrieur of Meudon and Porte de 

 Versailles — the large nummulites, more especially the former. 

 The Egyptian nummulites measure 2\ inches in diameter— the 

 nummulites of Meudon 1 inch, of Porte de Versailles ^ an inch. 

 They belong to separate sjwcies, and ' are known by diHereut 

 names. 



