REPLY TO THE CRITICISM ON: PROSPECTING WORK FOR GAS IN HUNGARY. . 97 
in the covering strata, the mother-rock must be found underneath 
them. 
There are in fact the asphalts of Bodonos, Tataros and Derna 
in the neighbourhood of the Réz Mountains, the big gas emanation 
of Rápolt near the mouth of the Szamos, the asphalt of Bogács and 
the oil-shows near Recsk, Parád near to the Bükk resp. the . Mátra, 
the gas-well of Őriszentmiklós in the surroundings of Budapest, the 
"oilfield. of Szelnica on the Mur Island, the oil outcrops along the 
. . Croatian Island-Mountains (Veliki Poganec, Mikleuska  Peklenica, 
Bacíindol etc), the oil and gasfield of Bujavica near Lipik: all of 
these occur in the neighbourhood of the borders of the Basin. 
But we do not search in vain in the inner parts of the Basin 
itself: I may mention the well of Precec near Zagrab, containing 
:gas, the gas of Resetari, near Novo Gradiska, as well as the oil- 
shows in the relative syncline near Sedlarica in Croatia; the gas- 
.oceurrences and gas-shows of Nagyatád and Lábod, of Kurd and 
Budafapuszta, the oil-shows of Harkány in Transdanubia ; the strong 
:gas-emanation in Baja occurring in the dead branch of the Danube 
as well as the paraffin-dirt occurring on a rather large area and the 
:gas-shows encountered in several bores, the many occurences of gas in 
considerable guantities near Titel, Ujvidék, Óbecse, Temesvár, Arad, the 
"mudvolcanoes discovered by Proféssor Böckh near Mezőhegyes ; the gas 
known near Szeged, and Kiskőrös, near Fábián Sebestyénmajor, 
Csanádapáca, Ürosháza, Gyula, Békés in the county of Csanád, néar 
Doboz, Mezőtúr, Karcag, Kaba, Nádudvar, Hajdúszoboszló, Püspök- 
ladány, "Balmazújváros, Tiszafüred, etc, etc on the Big Plain. 
"On all these places there are several artesian wells yielding more 
"or léss considerable guantities of natural gas. There were good gases 
also in thé deep bore near Hortobágy. 
I am suré that nobody can believe that the mother-rock occurs 
only underneath these places, but that guite to the contrary every- 
body must suppose its presence everywhere, betweén these occurrences 
in the Basin with exception perhaps of some spots. 
Here I must ask: Is not the presence of salt water in the arteé- 
sian wells and déep borés viz: Budafapuszta, Kurd, Simontornya, 
Óbecse, Hortobágy an evidénce for the salt formation being in thé 
depth ? Or is not H2S which one encounters almost in any déep boring 
"a product of décomposition of CH4in the same way as C02 and N, 
which also ocecurs very often simultaneously with it? This is deter- 
mined by the analyses of Transdanubia and of the Big Plain, in 
the samé wav as in Baku and other well-known oil-fiélds. 
On hand of these very many data we cannot arrive to any other 
7 
( 
Földtani Közlöny. L1—LII. köt. 1921—22. 
