WOODHOUSE AND TAYLOR. 123 



The actual divergencies from the mean were very small 

 and were in most cases within the limits of experimental 

 error. Taking for instance the case of the black soy beans, 

 of which mean nitrogen content was 6-3% (approximately), we 

 find that out of 15 determinacions 13 were within the limits 

 G-3 + -2/, and each of the fifteen came within the limits 

 63 4- -3%. In the same way the mean of the results obtained 

 with the yellow soy beans was 57% (approximately), and out 

 of 12 plots sampled and analysed 10 were within the limits 

 57 -f - 2% and the whole twelve came within the limits 



5 7 + -3%. Again in the chocolate coloured variety we find 

 that out of 33 plots sampled and analysed, whose mean nitro- 

 gen content was approximately 6%, 2G came within the limits 



6 + -2% and 30 within the limits 6 + -3%. 



From this it follows that the variation in nitrogen content 

 of individual plots was very small, and for all practical purposes 

 may be considered to have been constant over the whole field. 

 A similar constancy is observed in the oil determination, 

 but of necessity cannot be so striking, owing to the fact 

 that the methods used in the determination of oil are by no 

 means so accurate as those used for the estimation of nitrosren. 



Srj. — Maturity. 



The life period of the different varieties of Soy Beans varies 

 over a wide range. Piper and Morse (9) state that the early 

 American varieties ripen in eighty days and the latest varieties 

 in over one hundred and fifty days, while we have found that the 

 varieties (Types I — IV) found in the plains of Bengal take as much 

 as two hundred days to mature. These types do not reach ma- 

 turity in America. These late types have a serious disadvantage 

 in that they remain on the land during both the rainy and cold 

 seasons so that only one crop can be taken on the land during 

 the year, but, on the other hand, they would appear to produce 

 more pods per plant than the earlier types. Before Soy Beans 

 can be recommended for cultivation in India on a large scale 



