120 SOY BEANS IN BENGAL, BIHAR AND ORISSA. 



Now from the data at our disposal we were able to draw 

 certain frequency curves for each variety.* These curves 

 illustrate very clearly the fact that while the black seeds tended 

 to have higher nitrogen values than the others, exactly the 

 contrary was the case with regard to the oil values. Reference 

 will be made to this later. 



It has already been mentioned that in addition to these 

 experiments undertaken in 1910 the actual descendants of the 

 single plants originally analysed were sampled and their nitrogen 

 content determined immediately. 



Owing to lack of time at our disposal we were not able to 

 determine the oil content of these plots, but observations on their 

 nitrogen content led us to believe that they were not in any 

 way different from the groups in which a determination of both 

 nitrogen and oil was made. 



It would appear, however, that in 1910 the nitrogen content 

 of the black soy beans was abnormally high. This was not only 

 the case in one plot, but was found in every single plot analysed. 

 Such variations are only to be expected as the character of the 

 season varies from year to year. 



From the experiments made during the three j'ears over 

 which the crop has been under observation, ho we 

 appear extremely probable that the tendency of the black i 

 variety is to maintain a high percentage of nitrogen and low 

 percentage of oil, while the other two varieties probably have a 

 tendency in a similar degree to give lower percentage of the 

 former and higher of the latter constituent. There appears to 

 be in fact little difference between the so-called chocolate and 

 yellow varieties as will be seen from the table already shown. 

 This is of great interest when viewed in conjunction with the 

 fact that the vegetative characters of the yellow and chocolate 

 varieties, apart from the seed colour, appear to be similar, and 

 distinctly different from those of the black. From this we are led 

 to believe that such characteristics as the oil and nitrogen content 

 of the crop may be correlated with actual vegetative characters. 



* t These curves are shown at the end of the Memoir. 



