DETAILED DESCRIPTIONS OF THE RESPECTIVE COALFIELDS. 23 
LaTouche * has recorded the occurrence of coal beds which 
may perhaps be coiitiiuious with tlie Nambor deposit, at a point 
on tlie Doigrung river about three or four iniles to the west. A 
singk^ seam of coal 3 feet thick and dipping west-north-west at a 
low angle is exposed twice in the bed of the stream. Owing to 
the inclusion of specks of resin in the coal he presumed that the 
beds are of Cretaceous age. A single analysis yielded d; arly 49 per 
cent, of ash, an even worse result than that from the Neuibor coal. 
Both these localities were visited by Mr. H. H. Hayde i^ in 1902. 
His report confirii s the unfavourable opinion expressed above. 
Garo II ills.— The first published account of coal discoveries in 
the Garo hills appears to be that of Mr. James Bedford, who 
in 1842 explored the so-called Kurribari coalfield and tnentions 
the occurrence of coal outcrops at Salkura, Champagiri and 
Mirampura. 
In 1868 and 1874 H. B. Medlicott examined the whole of the 
known outcrops. He reported that the main mass of the Garo 
hills is composed of gneiss to the south of which against the flank 
of the Tura range, Cretaceous rocks covered by Tertiary deposits 
are banked up. These Cretaceous rocks are probably continuous 
for fully 50 miles and in them coal is found in two localities ; one 
on the Sumesari river, north of Shushung-Durgapur in Mymsnsingh, 
the other in the neighbourhood of Harigaon at the west base of 
of the hills near the Brahmaputra. Neither of these outcrops shows 
good coal, but, from the fact that the outcrops are all at the 
very margin of the original area of deposition, he considered that there 
was promise of improvement to the dip beneath the covering Terti- 
ary deposits and suggested a trial boring at Dipkai, about 2 miles 
north-east of Putimari Haut. To the north of the mam basin 
outliers of Ci'etaceous rocks have escaped denudation at Daranggiri, 
Rongrenggiri and Kalu and in the first named locality coal of 
excellent quality has been found. 
Harigaon. — This is the locality of Mr. Bolton's "Kurribari coal- 
field." The coal at Salkura and Mirampara is, however, merely a 
resinous shale, whilst at Champagiri, more to the north and between 
the other two places, it is a thick bed of dark, stiff clay, with 
» Bee, G.S.I., XVIII, p. 31 (1885). 
2 Mss. G.S.I. (1902). 
» Bee., a.S.L, I, 11 (1868) ; VII, 58 (187-1). 
