438 



T. VOKOI. 



SORT, SEKITORI. 



Below i.oo 



19.50 



3.80 



I ■■ 513 



19.4 



1. 00— 1.05 



22.30 



3.80 



I : 5.87 



17-3 



1.05 — 1. 10 



24.40 



4.10 



I : 5-95 



16.8 



I. to— 1. 15 



26.10 



4.40 



I ■■ 5-93 



16.8 



1.15— 1.20 



27.80 



4.80 



I : 5.79 



17.2 



Over 1.20 



29.80 



4.90 



I : 6.08 



16.4 



SORT, ZAKKOKU-MOCHI (glutinous). 



Below 1.00 



16.30 



3.80 



I : 4.30 



23.2 



I.oo — 1.05 



20.go 



4.00 



I : 5'23 



19.1 



1.05— 1. 10 



23.80 



4-30 



I : 5-53 



18.0 



1. 10— 1. 15 



26.30 



4.60 



I : 5.72 



17.4 



C'ver 1.15 



28.30 



4.80 



I : 5.90 



16.9 



Thus it is seen that in the case of grains with a low specific 

 gravity the ratio of husk to seed is greater, that is, the}' have more 

 husk in proportion to the weiglit of the seed, and thus it may be 

 concluded that the husk of a grain has a great influence upon its 

 sj)ecific gravity. 



From these results we can see the reason why those exi^eri- 

 menters who have selected their grains by means of their specific 

 gra\'ities regardless of their weight, have almost without exception 

 obtained good results. Indeed they have selected unconciously 

 good, plump and heavy grains by taking specific gravity as the 

 standard of selection. The reason why the " specific gravity 

 selection " method is so widely used es2:)ecially for rice with good 

 results can also be seen. Though we can not say that a heavy 

 grain has always a high specific gravity, heavy grains of cereals 

 have on tJie average a higher .specific gravity, and when the seeds 

 are selected by specific gravity those light and immature grains can 

 be effectively got rid of and fairly good and plump seeds can be 

 obtained ; and when grains with the highest specific gravities are 

 selected, we obtain the largest number of the best grains. If seeds 

 could be selected practically by their weights so accurately that 

 orl)" the best grains could be obtained, then the " specific gravity 



