108 



Sulphuretted Hydrogen, which is a plant poison, The ultimate depth 

 of root development is limited by the highest point to which this 

 water rises, and so on this land drains are a necessity, and should 

 be narrow, and in a hot district like Mangaldai, banked up at 

 the sides. Owing to the lack of depth of the soils, exhaustion 

 is apt to quickly take place, but with manure, luxuriant bushes 

 can, I am confident, be kept up. The following is the analysis of 

 an old tea soil at Singrimari, still fairly flourishing, but occasionally 

 manured. 



Singrimari 30 years old. 



Manuring will be early needed on these gardens. The soil which 

 the above analysis represents urgently needs nitrogenous and organic 

 matter, and little else. This would be best supplied by green 

 manuring with a leguminous crop, and I would urge this, together 

 with the burial of jungle, or of any refuse which can be obtained, 

 including village manure. Such treatment would also improve the 

 condition of the land, which is urgently necessary. 



TEZPUR DISTRICT. 



The Tezpur district is composed of three entirely different sec- 

 tions. The first of these lies between the river and the so-called 

 Tezpur bank, and the land consists of a whitish grey soil (when 

 dry) overlying a sandy clay. Most of this land has been undoubtedly 

 under cultivation before, if not immediately before, being devoted 

 to tea. It is pure alluvium, and the worst feature is the shallowness 



