FR. VON HATTER CONGERIAN STRATA. 27 



yet made their way through the Diluvium ; at all events they have 

 not yet come down to the Congerian strata. To complete the ac- 

 count, and for comparison, I will give here the list of the strata 

 hitherto worked through by them :- — 



Alios, S.E. of Arad ; the boring 12,000 ft. south of the place : — 



I. Humus, 5 ft. ; 2. Clay, 7 ft. ; 3. Clay, yellow and sandy, 24 ft. ; 

 4. Clay, yellow and sandy, 63 ft. ; 5. Sand, rather coarse, somewhat 

 coherent, 52 ft. ; 6. Clay, 80 ft. ; 7. Sand, fine, somewhat coherent, 

 107 ft. ; 8. Clay, 10 ft. ; 9. Sandy clay, 12 ft. ; 10. Sandy clay, 13 ft. ; 



II. Fine clay, 73 ft.; 12. Sand, 63 ft.— Total . . 447 ft. 



W. of Arad ; 6000 ft. east of Pecsa :— 1. Humus, lift.; 2. Frag- 

 ments and sand (with remains of pottery), 1^- ft.; 3. Loose sand, 

 with rolled pebbles, 72 ft.; 4. Clay, 63ft.; 5. Like 3,12 ft.; 

 6. Clay, with isolated rolled pebbles, 69 ft. — Total . . 219 ft. 



The geological maps of older date have no indication of Miocene 

 deposits on the northern termination of the Hungarian plain, at the 

 foot of the Yihorlef and of the Epesies-Tokay mountain-group. 

 When, in the last year, Baron Eichthofen and myself surveyed this 

 region, we found thick and extensive Miocene strata surrounding 

 the foot of the mountains ; but among them no Inzersdorf strata 

 occurred. The marine strata found by us * either contain Ostrece 

 (as near Tinta), or the characteristic Cerithian forms (Zsujta). The 

 freshwater deposits of small isolated basins have vegetable remains ; 

 but Congerice and Melano-psides were not found at any of these 

 localities. 



Dr. Hochstetterf found the " Tegel" of Edeleny, alternating with 

 lignitic beds (farther westward near Miskolcz), to contain Helices 

 and vegetable remains, and to rest on solid grey " Tegel" with Ce- 

 rithian fossils. The same able observer found at Haugacz (E. of 

 Edeleny) strata with Paludina concinna, Sow., and P. tiadleri, 

 Partsch. M. Jurenak has sent to the Imperial Geological Institute 

 specimens of Congeria triangularis, found at Melyarsk near Arcnyos, 

 and at Nagy-Erenye near Diosgybr, in searching for brown-coal. 



MM. Wolf and Stur's explorations have shown that the marine 

 Tertiaries reach far down south-westward in the Western Comitates 

 (Neograd, Honth, Bars, Neiitra, and Prcssburg). Congerian strata 

 reoccur only near the Danube, towards the present line of lowest 

 level in the Hungarian basin. We must not, however, neglect to 

 mention, that Congerice, Paludince, and Melanin' have been found by 

 MM. Foetterle and Stur in the isolated freshwater basins of Aroa 

 and Thurocz (N. Hungary). 



Congerian strata occur more frequently in the middle than at the 

 margin of the Hungarian basin. In the best-known instances they 

 lie between the Lake Neusiedel and Pesth. They continue from 

 Eisenstadt and Oedenburg, on the west bank of this lake, through 

 the localities noticed by MM. Homer % and Wolf near Eszterhaz, at 

 the south-eastern end of the Lake Bcirczhaza (W. of Raab), Szend 



* Jahrb. geol. Reichsanst. x. p. 434, Sue, t Ibid. \ii. p. 699. 



J Verhandl. Yeivin. Naturk. rressburg, iii.. 9. Versammlungs-Bericht, p. L6. 



