GEOLOGICAL REPORT. 
509 
From Adda-Kudda up the river, as far as examined, the 
sandstone occurred in horizontal strata as before, but generally 
more highly ferruginous. 
At Stirling Hill, the peroxide of iron occurs in great abun- 
dance, in form of “pea-iron ore,” of a very beautiful character. 
Mount Patteh, -which is 1160 feet high, is the commencement 
of the table-land “on the north side of the granite,” which 
ppears to be the character of the country above this place. 
From the preceding facts the following conclusions may bo 
drawn : 
The granite is the central axis, mica slate and gneiss occurring 
on each side and dipping at great angles. 
The sandstone lies uuconformably on the mica slate and gneiss, 
as shown in the ideal section of the river. 
The phenomena observed indicate three geological periods. 
1st. The eruption of granite and elevation of mica slate and 
gneiss. 
2nd. The deposition of the sandstone unconformably on the 
flanks of the mica slate and granite. 
3rd. The upraising of the whole country, and the cutting 
through of the granite and the sandstone ; the destruction of which 
at a more recent period, would aflTord the materials for the 
formation of the Delta, such as we now find composing it. 
(Signed) Wm. Stanger. 
END OF VOL. I. 
