352 Dr. Adam on the Geology of the Banks of the Ganges . 
later formation, reached only to within a few inches, yet they 
were very hard, and sonorous in some degree when struck one 
against the other. 
The waters of the Saone and the Jumna, the two principal 
streams which enter the Ganges on the north side, are quite free 
from any earthy impregnation, and their beautiful clear colour 
forms a striking contrast with the muddiness of the latter at the 
part of junction. 
