,24 GEOLOGICAL MEMOIRS. 



The lower beds of the marine strata extend to the Slobostina 

 Eiver ; they are succeeded by Leithakalk, and then by the white 

 calc-marl. Wings of Insects and remains of Plants are found in beds 

 of shale, which, with beds of sandstone, are intercalated in the grey 

 marl that forms the foot of the Eaic-Thal, and which is covered by 

 the white calc-marl that forms the sides of the valley. 



Western slope of the Orljava-Gehirge, near Pdkra.- — Both of the 

 Neogene formations may be seen in this district. The Leithakalk 

 crops out from under the marl behind Pakra Church ; it is very porous 

 and light, and contains hollow casts of Cerithium ruhiginosum and G. 

 plicatum, and in some places a conglomerate formed of Nullipores and 

 fragments of Pecten latissimus, Brocc, and other bivalves. In the 

 ravine of Brussovac the lowest bed lies upon the crystalline rocks, 

 and is a greyish- white marl, equivalent to the marly sandstones of 

 Kogolje, which is overlaid by the Leithakalk, and is similar to that 

 of Pakra. The last-named bed contains large fragments of Pecten 

 latissimus, Brocc, Gryphcea Cochlear, Poli, and other bivalves, also 

 Olypeaster grandiflorus, Bronn. Above the Leithakalk there occurs 

 between Brussovac and Pakra a yellowish calc-marl (Cerithium-hori- 

 zon), containing Cardium plicatum, Eichw., Callitrites Brongniarti, 

 Endl., as weU as Planorhis, sp. East of Daruvar the marl and calc- 

 marl first make their appearance, and then the Leithakalk. 



In the Eiver Dobrakuca, near Yrbovac, N.E. of Daruvar, there 

 occur marl and calc-marl (Cerithium-horizon) ; and in the latter, 

 just as at Eaic, seams of shale and sandstone are interstratified, also 

 a coal-shale. In the latter, remains of Plants and freshwater Mol- 

 luscs, also bones of Eish, are somewhat abundant ; and north of Ban- 

 jani narrow seams of brown-coal are reached by shafts. 



Northern slope of the Orljava-Gehirge, near Vucin. — ^While cross- 

 ing two ridges near Yucin, the author observed that the Congeria- 

 beds are continued beneath the first ridge, which is itself composed 

 of white calc-marl (Cerithium-horizon). JN'ear the Eupnica-Thal, a 

 little south of Yucin, the Leithakalk was seen; it is here chiefly 

 composed of small, loosely connected Nullipores, Amphistegina Haueri, 

 Orb., and the following Bryozoa : — Hornera hippolyta, Defr., Myrio- 

 zoum gerainiporum, Eeuss, and Oellepora globularis, Bronn, together 

 with crumbling shells of Ostrea digitalina, Eichw., and other species. 

 The beds dip towards the north 45° to 60°. The trachyte crops out 

 from under the Leithakalk, and reposes, further southward, upon 

 granitic rocks, which in some places are traversed by more or less 

 thick veins of trachyte. No trace of trachyte-tuff is found anywhere 

 in the neighbourhood of Yucin. 



Near Drenovacz, beyond Yucin, the Leithakalk is seen covered im- 

 mediately by Congeria-sand, no trace of the younger calc-marl being 

 observed, nor of the marl further from the mountains. On the other 

 hand, the white marl appears near Orahovica, east of the last locality; 

 and in only one place did the author see the Leithakalk cropping out 

 from under it, and that was on the road from Duzluk to Sumedje. 



Eastern end of the Orljava-Gehirge, near Gradac. — This district 

 lies north of Gredistje, on the road between Bektes and Nasic. The 



