446 
The Hon. Mr. Strangways on the 
conjectured. This bed is rather difficult of access, but its true* 
nature cannot be seen well without examining it in situ , as it is 
not sufficiently coherent in this place to fall in solid fragments like 
those of the red chamite bed. This spotted surface might be 
taken at a distance for a conglomerate. Whence those fragments 
of this bed which are found at Repolova have been transported, 
it is impossible to say, but their superior hardness makes it im- 
possible that they should have been brought from the Tosna,* 
as well as their situation, which is nearly east of that river, the 
general diluvian current appearing (as has been stated) to have 
come from the north. All this sandstone on the Tosna, though 
soft, shews distinct traces of the globular or botryoidal structure, 
which however is most apparent in those beds or fragments over 
which the water flows. The strata are very nearly horizontal : the 
cliffs form perpendicular fa9ades of rock, usually continued into the 
water, but sometimes skirted by vast tabular fragments of all colours. 
The limestone is seen at Cordelova and along the lower Ishora, 
occupying a distinct terrace above, and containing trilobites and 
other organic remains in great perfection. Near a ruinous old 
house, called Gertovo, there is a ravine on the left bank of the river, 
where a torrent falls over a series of broken beds of limestone as 
regular as stairs : near this place the river’s bed rises to the level of 
the limestone, and the sand is no more seen. 
I have before mentioned a stone resembling a hard white species 
of tufa, which is found in large masses in the bed of the river, and 
which I have not been able to detect in situ . This is one object 
which I would beg to point out to the attention of any future tra- 
veller. 
* Or, to speak more correctly, from that part of the limestone strata through which the 
river Tosna now flows. 
