1C 
Records of the Geological Survey of India. 
such as might be procured at Champagiri or Mir am par a—fragments of pure jetty 
lignite. I have no doubt that such were what the Committee inaccurately speak of as 
‘ bituminous coal’. 
Thus it is plain to me that the unknown, undescribed, and unauthenticated “bituminous 
coal” came from the condemned “ brown-coal formationand that no evidence whatever exists 
of any other carbonaceous deposit in the Garrow Hills. 
Having satisfied myself upon the merits of all the evidence before me, and considering 
that evidence sufficient to form a judgment upon, I did not feel called upon to incur any 
further loss of time upon the object by hunting for a ‘find’ without the smallest prospect of 
success. But should any adventurous man, unsatisfied with the preceding explanations, wish 
to explore further, I would offer some remarks for his assistance. 
The nummulitic formation seems to exist here, on the whole, in as great force as in Silhet, 
but the valuable coal > there associated with it has not been detected here. The case is slightly 
different from that of the limestone : this rock could scarcely escape observation if it existed ; 
but coal outcrops are habitually eroded and concealed. I' cannot but think, however, that 
some hint of its presence would have been brought to light, even by such search as has been 
made. The best known (if not all) the niminmlitic coal in the Cossiah Iiills occurs above 
limestone. 
Of the cretaceous coal it may be said, that the described outcrops are all at the very 
margin of the original area ot deposition, and that the same tendency to form coal may have 
been much more developed further out in the formation. There would be no asserting the 
contrary; but also, no a priori confirmation can he given to such a conjecture. It is, however, 
evident, that the horizon of the carbonaceous hand in this formation very soon passes beneath 
the drainage level of the country, and it is only by boring that this supposition of development 
can he fairly tested; and only by regular pit-mining with a prodigious water discharge, that a 
coal in that position could he extracted. 
It wonkl seem at first sight that the cretaceous beds on the SIngmari range had over¬ 
lapped their .general line of boundary, and might extend to any distance north wards, with 
expansion of the coaly band. The feature is indeed a remarkable one ; showing that, to some 
extent, this terminal configuration of the crystalline axis is of pre-cretaceous origin; but it does 
not extend tar;—at the most northerly points of this range, at Dhepkai and Singmari, the 
metamorphic rocks are in place, and they occur at all points to the north where rock has been 
observed in the valley; as at Dhubri, Bengal Khatar, and all along the southern road to 
Goalpara. 28 Ih March, 1868. 
Mailbt, P. R. —Coppeb IN Bpndleccnd.— In the 2nd Volume of the Memoirs 
of the Geological Survey of India, p. 35. notice is taken of the asserted presence of 
copper near the village of Sorai or Sounrai, west of the Dessaun river, in the Shahgurh 
district, Mr. Medlicott there states that “when at. Nagode, Major Ellis had drawn my 
attention to this place, Sorai, as having once yielded large supplies of copper.” The Bajah 
of Shahgurh had mentioned it with a view to have the place examined. The specimens 
he gave were all rounded as if rolled by water, and “ with a polish as if for many a long 
day they had lain in a . greasy pocket.” Hone gave any evidence of having been broken 
from a vein. Mr. Medlicott visited the place, hut could get no information. After persisting 
for sometime he was shown a place just on the south of the village where, it was said, copper 
had been extracted. ^ It was a, shallow trench through the limestone. Mr. Medlicott could 
not find a trace of anything like a metalliferous mineral. During the past season I heard 
ot this place while working to the north of it, and in consequence I proceeded to the place. 
It is on the Bijawur rocks, at the edge of the crystallines. 
A prisoner had told the Assistant Commissioner that he could show the place where 
copper existed, and on being taken to the spot had pointed this out. The hole sunk by 
the Assistant Commissioner was in a fissure formed on a joint in the Bijawur limestone, 
heading N. E. S. W., the walls of which were 12 to 15 inches apart. This fissure bad 
been filled up with clay and pebbles of various kinds, Bijawur limestone, hornstone, 
Bijawur ferruginous beds, Vindhyan sandstones, Ac , but none of the crystalline rocks. 
At two ieet from the top were bits ot brick and charcoal, and at six feet from the surface, 
icerf was a quantity ot copper ore in rolled lumps, obviously the debris of some vein. 
