

162 Captain Franklin on the Diamond Mines of 



Source of the Bagin river near Urki, - 1 420 feet. 



Floor of the mine of Kamariya - - 1380 „ 



Bed of the Bagin river due south of them, - 1380 „ 



Floor of the mines of Brijpur, - - 1260 „ 



Bed of the Bagin river exactly opposite, - 1250 „ 



Matrix swept away. 



Top of its 1st cascade, - - - 1120 feet. 



Transported Diamonds. 

 Bottom of 1st cascade, - - - 900 feet. 



Bottom of 2d cascade, - 700 „ 



From this list it would appear that the rock matrix of the 

 diamond in the Panna mines lias been swept away at an eleva- 

 tion of 1 100 feet, and that its lowest position in situ is between 

 12 and 1300 feet above the sea. 



2d, The contracted limits of this diamond tract has already 

 been mentioned as a peculiarly striking circumstance ; the 

 same kind of sandstone as that in which the diamond is found, 

 extends far beyond those limits, and why does it not contain 

 diamonds also ? to this question I can only reply by the fol- 

 lowing explanation : on the north, the scarp of the Bindachal 

 hills rests as a point d'appui on a low ridge of sienitic granite, 

 and the plains of Bundelkhand exhibit primitive rocks through- 

 out — therefore, excepting transported diamonds, none can be 

 expected in that quarter ; on the south, lias limestone stretches 

 along the outline of the counterscarp of the second range of 

 hills — and here again (excepting the diamonds of the counter- 

 scarp) none are ever found — being perhaps buried by the over- 

 lying limestone; on the west, the sandstone becomes thinner, 

 being often little more than a mere capping ; the conglomerate 

 form is also frequent, but in the diamond tract it is remarkable 

 that there is no other conglomerate than that which contains 

 the diamond ; moreover, black bituminous shale rises to the 

 surface near the village of Sahigerh, though in the diamond 

 tract I have never seen it with less than 400 feet of sandstone, 

 resting upon it ; on the east, the sandstone continues pretty 

 much the same, and I cannot offer any satisfactorv reason why 

 diamonds should not be found east of the Cheyla Nadi, which 

 at present is considered to be their eastern boundary. 



3d, I have endeavoured to show that the rockv matrix of 



