Vidlei^ of Oodipoor. 273 



try, especially to the westward, is far tcx) limited to admit of 

 our reasoning with anything like certainty on the subject. I 

 shall only farther remark, that masses of a very peculiar and 

 characteristic siUceous limestone, hereafter to be described as 

 constituting one of the hills in the vicinity, are found imbedded 

 in great abundance in a kunkur bed, about one and a-half miles 

 to the south-east of the original locality, and that the majority 

 of the masses traceable to the strata of the surrounding hills, 

 have been transported in a similar direction. 



The kunkur beds are often traversed by quartz veins, which 

 are not, however, cotemporaneous with the kunkur: they can 

 iiwariably be traced to veins or dikes in the subjacent rocks. 

 When these latter are of a nature liable to be affected by at- 

 mospheric influences, the more durable quartz of the numerous 

 linear veins which traverse them is, during the process of disin- 

 tegration, left projecting above the surface. In situations where 

 no kunkur occurs, such appearances are constantly observed ; 

 the vein quartz projecting in long narrow tubular masses, to the 

 height of several feet above the surface. When kunkur hap- 

 pens to have been deposited in situations so circumstanced, it is 

 sufficiently obvious that the projecting quartz will assume the 

 form of veins in this formation ; and it is perhaps not going too 

 far to suppose, that a similar process, but on a much larger 

 scale, may, in some instances, have given birth to the so-called 

 dikes and veins so frequently observed in nature. 



I have alluded above to a peculiarity in the arrangement of 

 the imbedded masses of the kunkur conglomerate of the valley 

 of Oodipoor. These masses are of various forms, frequently 

 flat lenticular, or they are elliptical ; and I have almost in- 

 variably observed that such masses are placed edgeways, their 

 larger axis being vertical. From the spheroidal and water-worn 

 aspect of the majority, we may infer that they have been long 

 exposed to the action of running water ; yet the position which 

 they have assumed in the kunkur, is at variance with the idea 

 of their having been slowly accumulated previous to the deposi- 

 tion of the matrix, in the situation where they are now found, 

 like the pebbles of the channels of rivers and beds of lakes ; and 

 we must account for the phenomenon on other principles. 



Perhaps the easiest way of explaining the fact, is to suppose 



VOL. XIV. NO. XXVIII. APRIL 1833. S 



