135 



or calculating on the non-sandy part of the soil : 



Neither of these soils is by any means exhausted, but both 

 would benefit by oilcake as manure. In fact the whole of this 

 section*, so far as I have been able to examine it, should be treated by 

 precisely the same methods as on the other side of the Dhunsiri. 



NOWGONG DISTRICT. 



The climate on the western side of the Mikir hills, where the 

 Nowgong district is situated, seems quite different from that above 

 this break in the valley. The soil too, except for a ridge of red soil 

 running through Seconee, part of Solal and Kellyden, and appearing 

 again at Rangamati, is heavier than is usual, and has very often a 

 hard subsoil. Koliabar, near the river at Silghat, is more or less 

 unique, and consists of heavy soil generally grazed in the past, 

 but containing a large amount of phosphates. This leads to the 

 growth of very good tea, but the land needs treatment, as often 

 as possible, with green manure crops and cattle manure. Oilcake 

 would also here be valuable. Phosphates, and potash also, would 

 usually be wasted if more were added than is found in the cattle 

 manure or the oilcake. But organic matter the soil must have. 

 The following are analyses of two of these grazing lands : 



