AND COLLEGE, PUSA, FOR 1915-16 13 



barograph have been maintained. Work in connection with 

 draingauges here is being kept up. The waters and crops 

 from the Cawnpore draingauges are also being analysed as 

 usual. 



IV. Infertility under trees. 



The problem of the occurrence of infertile patches in the 

 soils under trees is being studied. It has been found that 

 in many cases, though not in all, this is associated with a 

 decreased permeability of the soils and the presence of 

 soluble salts. 



V. Rice. 



The Rices of Bihar and Orissa. In view of the 

 importance of a chemical study of this valuable food crop 

 the examination of the composition of the rices grown in 

 Bihar and Orissa was undertaken, along with other related 

 questions of interest. 



It was thought desirable to confine the work to samples 

 of rice in the Government farms, where they are grown 

 under definite cultural conditions. The rices were, however, 

 not pure line cultures. Of the samples received, three came 

 from Bankipore, one from Bettiah, three from Cuttack, 

 thirteen from Dumraon and five from Sabour. The samples 

 studied did not include any boro rice. 



Composition of the Rices. The composition of the 

 rices did not vary much. 



The analytical figures allow an interesting deduction. 

 The amounts of oil, fibre and ash vary between very narrow 

 limits and the sum of these constituents will be more or less 

 constant. The sum total 1 of the remaining constituents of 

 albuminoids and soluble carbohydrates is thus also constant. 

 It was found that the sum of the percentage figures for 

 albuminoids and soluble carbohvdrates, in all instances 

 except three, fell between 94 and 95. In these three latter 

 cases the figures were 93-9 and 95-3. But the deviation is 

 so small that the general observation may be said to hold 

 good in these instances also. It was thus noted that when 



b 2 



