i>T. 3.] 
Medlicott, Viudh.gans in Raj poo tana. 
71 
manifestly connected immediately with structural conditions of the rocks. At the end of 
the outermost ridge, that of the Ivymore sandstone, I could trace a change in the dip from 
the steady south-east of the ridge to east-north-east, to north-east, and to north-north¬ 
east, there being here a little spur of sandstone tailing off to the west-north-west. Of the 
middle ridge of Bcwah sandstone I could make nothing; at its present termination the 
south-east dip is still maintained. On the undulating high ground formed by the top 
band of sandstone, thatof the Bundair group, the undulations which at Parsoli corresponded 
with the north-east strike, arc rapidly replaced towards Singoli by a north-west strike, 
and the outermost ridges underlie towards the plains to the north. On the low ground 
for some distance in front of all the ridges, Vindhyau shales (I cannot say of what group) 
are the only beds seen; they are much crushed, hut with a prevailing east-westerly strike. 
On a mere eursoTy survey and without any map of the ground my study of the sections 
could not be sufficiently detailed to offer any explanation of these complex stratigraphical 
features. 
Prom Singoli the tracing of the exact line of junction is greatly obscured by a change 
in the nature of the older rocks in contact; instead of the easily distinguished granite, 
gneiss and schists, the prevailing rock here is an imperfectly cleaved clay-slate, often scarcely 
distinguishable from the crushed Vindhyan shales. Superficially the change is indicated 
by the abundant debris of quartz derived from the veins that freely traverse the slates, hut 
are altogether wanting in the Vindhyan rocks. The run of the boundary here would seem 
to he much less regular than what wo have scon to the south. Towards Boondi the 
junction is again somewhat better defined, at least locally. Boondi stands at the end of a 
valley formed on an autielinal of the Bundair group (taking the limestone associated with 
the shales as a criterion of that group). The strike is about 15° north of east. On the 
north side of the valley is a massive ridge of quartzite sandstone, which must, at least 
in part, he formed of the Bundair rock. The slates are found close to the north base of the 
ridge. The difficulty of discriminating the series is increased in this vicinity by the occur¬ 
rence of a limestone, not markedly different from that of the Vindhyans, among what I took 
to he the slates. 
The crystalline metamorpbic rocks underlying the Malwa trap on the west show much 
variety, and invite a closer examination than I could give. They are decidedly gneissoso; 
and granitoid masses are frequent. There is one strong and persistent run of a coarse 
conglomerate. It is well exposed in the river at Tandla: the matrix, though coarsely 
foliated, is rather earthy, the pebbles are often large and subangular, not always elongated 
in the strike: whatever they may once have been they are now mostly granitoid. North 
of Tambesera the same is well seen: the boulders in it are sometimes 2 and 4 feet in 
diameter; they are thinly and partially distributed in the matrix. There is a crystalline 
limestone largely developed alongside the conglomerate. I also noticed some earthy graphi¬ 
tic schists associated with it. At Talwara, 10 miles to west of Banswarra, a white 
granular limestone is quarried to some extent. A north-westerly strike prevails throughout 
these rooks. 
Bocks of semi-metamorphic character were first observed north of Chittovgurli. Bibs 
of quartzite tail out from a considerable group of hills to the north to within half a mile of 
the_ Vindhyan boundary. They are associated with earthy ferruginous flaky slates or semi 
schists. They are in very irregular junction with a coarse, quartzose, friable granitoid rock, 
which largely prevails here in the uietamorpliic series; it is quite massive and amorphous. It 
is found In contact with the quartzite, and within a few yards is separated from it by many 
feet of the slates; yet I noticed no case of special intrusion or any signs of contact meta¬ 
morphism. At Gungrar the quartzites have become very massive, apparently overlying the 
slates, and forming considerable hills. A limestone shows very subordinately in these slates. 
! was greatly struck here by the resemblance of the lithological and stratigraphical con¬ 
ditions to those of the slates and quartzites of the Bajgir hills in Behar. The plains south 
ol Hanieergurh are formed on these slates, the northcrnly strike having changed to a steady 
east-north-east direction ; and thus they stretch away to the east, being the same as have been 
already noticed in contact with the Vindhyans from Singoli northwards. 
_Of rocks younger than the Vindhyans the Deccan trap is almost the only representative 
within the area I refer to. At one spot about a mile south of Jahbooah, near the north 
base of the great ridge of trap, there is a small remnant of the Bagh cretaceous deposits; 
