6 Dr. Bright upon the hills of Badacson , Szigliget , xsfc. 
The third hill, named Szigliget, presented at its base, and below 
the village of that name, the same conglomerate, and to appearance 
the whole hill was composed of this substance. On ascending how- 
ever towards a ruined castle which stands upon the summit, I ob- 
served this conglomerate assuming a more bold and rocky form, 
and on examination found that it was of a much harder texture, and 
the parts of which it was composed appeared more completely 
amalgamated together. After proceeding a few steps farther I 
found myself upon a regular vein, of about 12 or 14 feet in thick- 
ness, running almost perpendicular downwards as far as vegeta- 
tion allowed the rock to be visible, and upwards to the summit. 
This vein was of a very compact and heavy substance, of a dark 
colour, with sparkling crystallized particles ; and was upon the 
whole a mineral which I did not hesitate to consider basaltic green* 
stone. Towards each side, for the width of two or three feet, it was 
broken into irregular angular flat pieces, and might be called shat- 
tery, but towards the centre it was more firm, and very decidedly 
split into irregular horizontal columns. 
The junction of this vein with the surrounding rock is abrupt 
and well marked ; yet they adhere closely together, and with some 
care may be procured united in the same specimen. 
With respect to the mass of rock ; it is composed of what appear 
to be innumerable fragments of basalt or lava with small white crys- 
tals disseminated through them. These fragments are united by a 
yellow-brown semicrystalline matrix, and in parts wdiere least com- 
pact shewing distinct grains as of rubbed siliceous sand. Through 
this mass are distributed collections of vesicles giving the precise 
appearance of scorias, but not presenting a defined edge of separation, 
as if they had been included masses ; but on the contrary so forming 
a part of the substance of the rock as to suggest an idea that the 
